What Are Business Tax Deductions? 16 Common Write-Offs

Every year, small business owners and freelancers leave thousands of dollars on the table simply because they don't know what are business tax deductions they qualify for. If you've ever wondered whether that home office, business lunch, or software subscription could reduce your tax bill, you're asking the right questions. Understanding which expenses you can legally write off is one of the most effective ways to keep more of what you earn.

Business tax deductions work by lowering your taxable income, the amount the IRS uses to calculate what you owe. The more legitimate deductions you claim, the less you pay in taxes. But here's the catch: you can only claim deductions you know about. Many business owners stick to obvious expenses like office supplies while missing dozens of other qualifying write-offs that could save them hundreds or even thousands of dollars each year.

At TaxesToday, our CTEC-certified tax preparers have spent over 15 years helping self-employed individuals, freelancers, and small business owners identify every deduction they're entitled to. In this guide, we break down 16 common business tax deductions you should know about, from vehicle expenses and health insurance premiums to retirement contributions and professional services. Whether you file a Schedule C or operate as an LLC or S-Corp, this list will help you approach tax season with confidence and a clear strategy for maximizing your refund.

1. Tax preparation and accounting fees

When you ask what are business tax deductions you can claim, most business owners overlook one of the most straightforward write-offs: the cost of preparing your taxes. The IRS allows you to deduct fees you pay to tax preparers, accountants, and bookkeepers as long as those services relate directly to your business income. This includes everything from hiring a CPA to file your Schedule C to paying for tax software that handles your self-employment returns. If you pay someone to help you navigate quarterly estimated taxes, maintain your books, or represent you during an audit, those expenses qualify too.

What counts as a deductible tax and accounting fee

You can deduct fees paid to licensed tax professionals who prepare your business tax returns, including CPAs, enrolled agents, and CTEC-certified preparers. Bookkeeping services that track your business income and expenses throughout the year also qualify. Software subscriptions specifically designed for business accounting or tax preparation, such as QuickBooks Self-Employed or TurboTax Business, count as deductible expenses if you use them exclusively for your business finances.

However, you cannot deduct the cost of preparing your personal tax return unless it relates directly to your business income. If your tax preparer charges you a single fee that covers both personal and business returns, you need to ask for an itemized breakdown. Only the portion that applies to your Schedule C, LLC, or S-Corp filing qualifies as a business deduction.

Where it goes on your return and how to claim it

Most self-employed individuals report tax preparation fees on Schedule C, Line 17 under "Legal and professional services." If you operate as an LLC taxed as an S-Corp, you report these expenses on Form 1120-S in the deductions section. The key is to categorize these costs separately from other professional fees so your return stays organized and easy to defend if the IRS ever questions it.

You must pay these fees in the tax year you want to claim the deduction, even if the services relate to a previous year's return.

Records to keep and common mistakes

Keep copies of all invoices and receipts from your tax preparer or accounting software provider. Save email confirmations for software renewals and bank statements showing payment for these services. If you pay a tax professional, request an itemized invoice that clearly separates business tax preparation from personal tax preparation. This documentation proves the expense qualifies as a business deduction rather than a personal cost.

One common mistake is deducting penalties or interest charged by the IRS as part of your tax preparation fees. These amounts never qualify as business deductions. Another error is claiming 100% of tax software costs when you also use the program for personal finances. If the software handles both business and personal tasks, you can only deduct the portion you use for business purposes.

2. Home office expenses

If you work from home, your home office can deliver one of the largest tax savings available when you consider what are business tax deductions apply to your situation. The IRS lets you write off a portion of your rent, mortgage interest, utilities, and home maintenance costs as long as you meet specific requirements. You must use a dedicated space in your home regularly and exclusively for business activities. This deduction works whether you own or rent your home, and it applies to apartments, houses, and even mobile homes as long as you maintain a qualified workspace.

What qualifies under regular and exclusive use rules

Your home office must pass two tests: regular use and exclusive use. Regular use means you conduct business in that space consistently, not just occasionally. Exclusive use means you use that area only for business, never for personal activities like watching TV or storing personal items. The space can be a full room, a portion of a room, or even a converted garage, but you cannot use it for anything other than your business. If you set up a desk in your bedroom but also use that room for sleeping, that space does not qualify.

You can claim a home office deduction even if you rent your home, as long as you meet the exclusive and regular use requirements.

Simplified method vs actual expense method

The IRS offers two ways to calculate your home office deduction. The simplified method lets you deduct $5 per square foot of office space, up to 300 square feet, for a maximum deduction of $1,500. This method requires no detailed tracking of actual expenses. The actual expense method requires you to calculate the percentage of your home used for business and apply that percentage to eligible expenses like rent, utilities, insurance, and repairs. Most business owners with larger home offices or higher housing costs benefit more from the actual expense method.

Records to keep and common mistakes

Keep receipts for all home expenses you plan to deduct, including utility bills, mortgage statements, property tax bills, and home insurance premiums. Document your office space with photos and measurements that prove you use it exclusively for business. If you use the actual expense method, maintain a detailed breakdown showing how you calculated your business use percentage.

One common mistake is claiming a home office when you also rent a separate business location for the same type of work. Another error is failing the exclusive use test by placing personal items in your office space or using it for non-business activities.

3. Business use of your car and mileage

Your vehicle expenses can add up to thousands of dollars in deductions each year if you use your car for business purposes. The IRS lets you write off the costs of driving for work-related activities, whether you own, lease, or even use a personal vehicle exclusively for business. Understanding how to track and claim these expenses correctly helps you answer what are business tax deductions apply when you spend significant time on the road for client meetings, vendor visits, or business errands.

Standard mileage rate vs actual expenses

You can calculate your vehicle deduction using the standard mileage rate or the actual expense method. The standard mileage rate for 2026 is 67 cents per mile, and you simply multiply your business miles by this rate. This method covers gas, maintenance, insurance, and depreciation in one simple calculation. The actual expense method requires you to track every vehicle-related cost throughout the year, including fuel, oil changes, repairs, insurance, registration fees, and depreciation. You then deduct the percentage of these costs that corresponds to your business use.

Most self-employed individuals save more with the standard mileage rate unless they drive an expensive vehicle or incur unusually high operating costs.

What driving counts and what does not

You can deduct mileage for trips between business locations, client meetings, vendor pickups, and deliveries. Driving to meet clients, attend business conferences, or run business errands all qualify. However, your daily commute from home to your primary workplace never counts as deductible mileage. If you maintain a home office that qualifies as your principal place of business, trips from your home office to client sites or other business locations become deductible.

Records to keep and common mistakes

Keep a mileage log that records the date, destination, business purpose, and miles driven for each trip. Mobile apps can track this automatically, but a simple spreadsheet works just as well. Save receipts for all actual expenses if you choose that method instead of the standard mileage rate.

A common mistake is claiming personal trips as business mileage or failing to document the business purpose of each trip. Another error is switching between calculation methods mid-year, which the IRS prohibits.

4. Business travel

Business travel expenses represent one of the most valuable deductions when considering what are business tax deductions apply to your situation. The IRS lets you write off transportation, lodging, and related costs when you travel away from your tax home for business purposes. This applies whether you fly across the country for a conference, drive to a neighboring city to meet a client, or spend several days attending a trade show. The key is proving the trip's primary purpose was business, not personal leisure.

What makes a trip deductible business travel

Your trip qualifies as deductible business travel when you travel away from your tax home for a period substantially longer than an ordinary workday and you need to sleep or rest during the trip. Your tax home is the entire city or general area where your main place of business is located, not necessarily where you live. If you attend a business conference in another city, meet with clients in a different state, or visit a job site that requires an overnight stay, those trips qualify. However, if you extend your trip for personal activities, you can only deduct the days you spent on business.

Deductible travel costs you can include

You can deduct airfare, train tickets, bus fares, and car rental fees when you travel for business. Hotel costs qualify for the nights you spend away conducting business activities. Taxi fares, rideshare services, and parking fees at your destination count as deductible expenses. Even baggage fees and tips you pay to porters or hotel staff qualify as travel deductions.

You cannot deduct lavish or extravagant expenses, but the IRS does not define these terms with specific dollar amounts.

Records to keep and common mistakes

Keep receipts for all lodging, transportation, and travel-related expenses. Save boarding passes, hotel invoices, and rental car agreements. Document the business purpose of your trip with meeting agendas, conference schedules, or client correspondence that proves you traveled for work.

One common mistake is deducting personal vacation days mixed into a business trip. Another error is failing to allocate expenses properly when family members accompany you on business travel.

5. Business meals

Business meals represent another frequently overlooked answer when you research what are business tax deductions you can claim. The IRS allows you to deduct 50% of qualifying meal expenses when you eat with clients, business partners, or employees for a business purpose. This deduction applies whether you grab coffee with a prospective client, take a customer to lunch, or order dinner while working late at the office. Understanding the rules around meal deductions helps you claim legitimate expenses without crossing into entertainment territory that no longer qualifies.

When meals qualify and how much you can deduct

You can deduct 50% of meal costs when you eat with a current or potential business associate to discuss work-related matters. The meal must occur in a setting conducive to business, not primarily for entertainment. Meals during business travel also qualify, as do meals you provide to employees for the employer's convenience. Restaurant meals, catered events, and even food delivery services count as long as you maintain a clear business purpose.

Meals consumed alone while traveling for business qualify for the 50% deduction, but your everyday lunch at home never counts as deductible.

How to separate meals from entertainment

The Tax Cuts and Jobs Act eliminated deductions for entertainment expenses starting in 2018, but meal costs remain deductible when you separate them from entertainment. If you take a client to a baseball game and buy them dinner at the stadium, you can deduct the meal portion but not the tickets. You must purchase the food and beverages separately and receive an itemized receipt showing the meal costs distinct from entertainment charges.

Records to keep and common mistakes

Keep detailed receipts that show the restaurant name, date, amount spent, and people present. Document the business purpose by noting what you discussed on the receipt or in a separate log. Save credit card statements that confirm the payment date and merchant.

A common mistake is deducting 100% of meal costs instead of the allowed 50%. Another error is claiming meals with family members or friends who have no business connection to your work.

6. Advertising and marketing

Advertising and marketing expenses rank among the most overlooked answers when business owners ask what are business tax deductions they can claim. The IRS lets you write off any ordinary and necessary costs you spend to promote your business, attract customers, or build brand awareness. This includes everything from traditional print ads and billboards to digital marketing campaigns and social media advertising. You can deduct these expenses in the year you incur them, making them one of the most immediate tax benefits available to self-employed individuals and small business owners.

What advertising and promotion expenses qualify

You can deduct costs for printed materials like business cards, brochures, flyers, and catalogs that promote your products or services. Radio and television advertising spots qualify, as do newspaper and magazine ads. Website design and hosting fees count when you use your site primarily for business purposes. Sponsorship costs for local events or charitable organizations also qualify as advertising expenses when you receive promotional recognition in return.

Common modern marketing costs that count

Digital advertising expenses represent the largest category for most modern businesses. You can deduct social media ad campaigns on platforms like Facebook, Instagram, and LinkedIn. Google Ads and search engine marketing costs qualify completely. Email marketing software subscriptions, content creation costs, and fees you pay to graphic designers for marketing materials all count as deductible advertising expenses. Even promotional giveaways like branded merchandise you distribute to potential customers qualify as advertising costs.

You can immediately deduct advertising expenses that benefit your business for 12 months or less, but you must amortize campaigns that extend beyond one year.

Records to keep and common mistakes

Keep receipts and invoices for all advertising services and platforms you use. Save screenshots of digital ad campaigns showing the dates they ran and the amounts you spent. Maintain contracts with marketing agencies or freelancers who create promotional content for your business.

A common mistake is deducting political contributions or lobbying expenses as advertising costs, which never qualify. Another error is claiming 100% of costs when you promote both business and personal services on the same platform.

7. Office supplies and small equipment

Office supplies and small equipment purchases represent some of the easiest deductions to claim when you consider what are business tax deductions apply to everyday business operations. The IRS lets you write off pens, paper, printer ink, staplers, and similar consumable items you use regularly in your business. You can also deduct small equipment purchases like calculators, desk organizers, and filing systems as long as you use them exclusively for business purposes. These deductions apply whether you buy supplies in bulk at an office supply store or order individual items online throughout the year.

What counts as supplies vs equipment

Supplies include items you use up or replace frequently, such as printer paper, envelopes, sticky notes, and toner cartridges. Small equipment covers items that last longer but cost less than major assets, like desk lamps, wastebaskets, staplers, and handheld calculators. Both categories qualify for immediate deduction in the year you purchase them. However, expensive items like computers, printers, or furniture fall into a different category that requires depreciation unless you elect to use Section 179 expensing.

How to handle items that last more than a year

When you buy equipment that costs more than $2,500 per item, you must treat it as a capital asset and depreciate it over several years. Alternatively, you can use Section 179 expensing to deduct the full cost immediately, up to annual limits. Items under the $2,500 threshold qualify as de minimis safe harbor expenses that you can write off completely in the purchase year.

You can elect to expense equipment purchases immediately under Section 179 rather than depreciating them over multiple years.

Records to keep and common mistakes

Keep receipts for all supply and equipment purchases showing the date, vendor, items purchased, and amounts paid. Save credit card statements and bank records that confirm these transactions. Maintain a log documenting how you use equipment for business purposes if you also keep personal items in your office.

One common mistake is deducting personal office supplies you use at home for non-business activities. Another error is failing to separate equipment purchases that require depreciation from supplies you can expense immediately.

8. Software and subscriptions

Software subscriptions and online services have become essential business expenses that many owners overlook when exploring what are business tax deductions they can claim. The IRS lets you deduct subscription fees for software and online tools you use exclusively for business purposes, from accounting programs and project management platforms to email marketing services and cloud storage. This includes monthly or annual subscriptions for software-as-a-service products, mobile apps with business functionality, and digital tools that help you run your operations more efficiently.

What subscription and software costs qualify

You can deduct business-specific software like QuickBooks, FreshBooks, or Wave for accounting and invoicing. Project management tools such as Asana, Trello, or Monday.com qualify when you use them to coordinate business activities. Customer relationship management platforms, email marketing services, and website hosting fees all count as deductible expenses. Design software subscriptions like Adobe Creative Cloud or Canva Pro qualify if you use them to create business marketing materials or client deliverables.

You must use the software primarily for business to deduct 100% of the subscription cost, or you need to prorate based on business use percentage.

How to treat annual plans and multi-year licenses

Annual subscriptions you pay upfront qualify for immediate deduction in the year you make the payment as long as the subscription does not extend beyond 12 months. Multi-year software licenses that you prepay must be amortized over the license period rather than deducted all at once. If you pay $600 for a three-year license, you deduct $200 per year over three years.

Records to keep and common mistakes

Keep email receipts showing your subscription charges, renewal dates, and service descriptions. Save bank statements that confirm automatic payments for recurring subscriptions. Screenshot your account dashboards showing active business subscriptions.

One common mistake is deducting personal streaming services or entertainment subscriptions as business expenses. Another error is claiming 100% of software costs when you use the same tool for both personal and business activities.

9. Rent for office or equipment

Rent payments for business space and equipment create significant deductions that many self-employed individuals miss when researching what are business tax deductions apply to their operations. The IRS lets you write off rent you pay for office space, warehouse facilities, retail locations, and leased equipment as long as you use them exclusively for business purposes. This includes monthly payments for commercial spaces, storage units for business inventory, and equipment leases like copiers, computers, or machinery. You deduct these costs in the year you make the payments, making rent one of the most straightforward business expenses to claim.

What rent payments qualify

You can deduct rent for commercial office space whether you lease a full building, share a coworking space, or rent a single office in a larger facility. Storage unit fees qualify when you store business inventory, equipment, or records. Equipment rental costs count as deductible expenses, including short-term rentals for specific projects and long-term leases for computers, vehicles, or specialized machinery. Even parking space rentals near your business location qualify as deductible rent expenses.

Special rules for renting from a related party

Rent payments to family members or related businesses require extra documentation to prove the arrangement reflects fair market rates. The IRS scrutinizes these transactions closely to prevent inflated deductions. You must show that you pay reasonable rent comparable to similar properties in your area and maintain a written lease agreement. Payments to your spouse, parents, or children for business space must reflect actual market value.

You cannot deduct rent payments that exceed fair market value, even when renting from an unrelated party.

Records to keep and common mistakes

Keep copies of your lease agreements showing the rental amount, payment schedule, and lease duration. Save canceled checks, bank statements, or payment receipts that prove you made the rent payments. Maintain correspondence with your landlord documenting any rent increases or lease modifications.

One common mistake is deducting security deposits as rent in the year you pay them, which only qualify when the landlord keeps them. Another error is claiming rent for space you use partially for personal purposes without prorating the business portion.

10. Utilities, phone, and internet

Utility expenses often confuse business owners exploring what are business tax deductions they can claim because these costs typically serve both personal and business needs. The IRS lets you deduct utility bills, phone services, and internet costs that you use for business purposes, but you must calculate the business use percentage accurately. This applies to electricity, water, gas, trash collection, phone lines, and internet service when you operate a home office or use personal services for work activities. You cannot deduct 100% of these expenses unless you maintain a separate business location or dedicated business phone line.

What percentage you can deduct when you share services

You calculate your deduction based on how much you use each service for business compared to total use. If your home office takes up 15% of your home's square footage, you can deduct 15% of utility costs like electricity, gas, and water. Phone and internet services require different calculations based on actual business use rather than space. Track how many hours or days you use these services for work compared to personal activities to establish a reasonable business use percentage.

How to handle a home internet or cell phone plan

You can deduct the business portion of your cell phone bill when you use the same phone for work and personal calls. Calculate the percentage of time or data you use for business activities and apply that percentage to your monthly bill. Internet service works the same way, with deductions based on how much you use the connection for business versus personal browsing or streaming.

You must keep detailed records showing how you calculated your business use percentage if the IRS questions your deduction.

Records to keep and common mistakes

Keep copies of all utility bills showing account holder names, service addresses, and payment amounts. Document your business use calculations with logs tracking work hours, business calls, or data usage. Save bank statements confirming you paid these bills.

One common mistake is deducting 100% of shared services without calculating the actual business portion. Another error is claiming utilities for spaces that fail the home office exclusive use test.

11. Insurance premiums

Business insurance premiums provide essential protection while delivering valuable tax savings when you explore what are business tax deductions reduce your taxable income. The IRS lets you deduct premiums you pay for insurance policies that protect your business operations, employees, and assets. This includes general liability insurance, professional liability coverage, commercial property insurance, and business vehicle policies. You deduct these costs in the year you pay them, whether you make monthly payments or pay an annual premium upfront. Most self-employed individuals and small business owners overlook thousands in potential deductions by failing to track all their business insurance expenses throughout the year.

Common business insurance policies that qualify

You can deduct general liability insurance that protects your business from customer injury claims or property damage lawsuits. Professional liability insurance, also called errors and omissions coverage, qualifies when you need protection from malpractice or negligence claims. Commercial property insurance covering your office, equipment, and inventory counts as a deductible expense. Business vehicle insurance qualifies when you use a car, truck, or van primarily for business purposes. Workers' compensation insurance and business interruption insurance both create valid tax deductions.

Health insurance premiums follow different rules and typically qualify as self-employed health insurance deductions on Form 1040 rather than Schedule C expenses.

What you cannot deduct as business insurance

You cannot deduct life insurance premiums when you or your business owns the policy and receives the death benefit. Personal health insurance that covers you outside your business operations does not qualify as a business expense. Homeowners or renters insurance for your personal residence never qualifies unless you maintain a qualified home office.

Records to keep and common mistakes

Keep policy declarations pages showing coverage dates, premium amounts, and policy types. Save payment receipts, canceled checks, or bank statements proving you paid the premiums. Maintain correspondence from insurance agents confirming your business coverage.

A common mistake is deducting personal insurance policies as business expenses without proper business justification. Another error is claiming premiums for policies that primarily benefit you personally rather than protecting your business operations.

12. Contractor and freelancer payments

Payments to contractors and freelancers create valuable deductions that many business owners miss when researching what are business tax deductions apply to their labor costs. The IRS lets you write off every dollar you pay to independent contractors who perform services for your business. This includes payments to graphic designers, writers, consultants, virtual assistants, and any other non-employee workers you hire. You deduct these costs in the year you make the payments, making contract labor one of the most straightforward ways to reduce your taxable income while scaling your business operations.

What counts as contract labor

You can deduct payments to any independent contractor who provides services to your business under terms that do not create an employer-employee relationship. The contractor must control how they complete the work, use their own tools and equipment, and typically work for multiple clients. Web developers, marketing consultants, photographers, bookkeepers, and writers all qualify as contract labor when you hire them for specific projects or ongoing services. Even one-time project payments to contractors count as deductible expenses.

1099-NEC rules and when they apply

You must issue a Form 1099-NEC to any contractor you pay $600 or more during the tax year for services rendered. This reporting requirement applies to individuals, partnerships, and LLCs, but not to corporations unless they provide legal or medical services. File the 1099-NEC with the IRS by January 31 and provide a copy to the contractor. Payments below $600 still qualify as deductible expenses even though you do not need to issue a 1099-NEC form.

You need each contractor's completed Form W-9 before making payments to ensure you have correct tax identification numbers for 1099-NEC reporting.

Records to keep and common mistakes

Keep copies of all contractor invoices showing services performed, dates, amounts paid, and payment methods. Save signed contracts or service agreements outlining the work scope and payment terms. Maintain completed W-9 forms for every contractor you pay.

A common mistake is deducting cash payments without proper documentation or receipts. Another error is misclassifying employees as contractors to avoid payroll taxes.

13. Employee wages and benefits

Employee wages and benefits represent some of the largest deductions available when you ask what are business tax deductions reduce your bottom line. The IRS lets you deduct every dollar you pay in employee compensation, including salaries, hourly wages, bonuses, commissions, and most fringe benefits. This applies whether you employ one person or a full team, and it covers both full-time and part-time workers. You deduct these costs in the year you pay them, making payroll one of the most substantial ways to lower your taxable income while building a stronger business.

What payroll costs qualify

You can deduct gross wages you pay to all employees before any withholding for taxes or benefits. Bonuses and commissions qualify as deductible compensation when you pay them for work performed. Holiday pay, vacation pay, and sick leave all count as deductible wage expenses. Severance payments and taxable fringe benefits like achievement awards or gifts valued over IRS limits also qualify. Employer-paid payroll taxes, including your portion of Social Security, Medicare, and federal unemployment taxes, create additional deductions beyond the base wages.

Benefit plans and payroll tax basics for deductions

Health insurance premiums you pay on behalf of employees qualify as deductible business expenses. Retirement plan contributions you make to employee 401(k) accounts or SEP-IRAs count as compensation expenses. Life insurance premiums for group term coverage up to $50,000 per employee qualify for deduction. Educational assistance programs, dependent care assistance, and health savings account contributions also create valid business deductions when you offer them to employees.

Payroll taxes you withhold from employee paychecks never qualify as your business deduction because those amounts belong to the employee.

Records to keep and common mistakes

Keep detailed payroll records showing gross wages, withholding amounts, and net pay for each employee. Save copies of quarterly payroll tax returns like Form 941 and annual W-2 forms. Maintain records of benefit plan contributions, insurance premium payments, and enrollment documentation.

A common mistake is deducting payments to family members without proving they performed actual work at reasonable compensation rates. Another error is deducting payroll taxes that you withheld from employee paychecks rather than taxes you paid as the employer.

14. Interest and bank fees

Interest charges and bank fees often go overlooked when business owners research what are business tax deductions apply to their financial operations. The IRS lets you deduct interest you pay on business loans, credit cards, and lines of credit as long as you use the borrowed funds exclusively for business purposes. This includes interest on equipment financing, business credit cards, commercial mortgages for business property, and working capital loans. Bank fees for business accounts, monthly service charges, and payment processing costs all qualify as deductible expenses that reduce your taxable income.

What interest you can deduct and when it gets limited

You can deduct business loan interest on term loans, equipment financing, and lines of credit when you use the funds to purchase business assets or cover operating expenses. Credit card interest qualifies when you charge business expenses to a dedicated business credit card. Interest on a business vehicle loan counts as deductible when you use the vehicle primarily for work. However, you cannot deduct interest on loans you use for personal purposes, even if you plan to repay them with business income.

The IRS limits interest deductions to 30% of adjusted taxable income for businesses with average annual gross receipts exceeding $30 million over the prior three years.

Deductible bank fees and payment processing fees

Monthly bank account maintenance fees for business checking and savings accounts create deductible expenses. Overdraft fees, wire transfer charges, and check printing costs all qualify. Payment processing fees from credit card processors like Square, PayPal, or Stripe count as deductible business expenses. ATM fees you incur while accessing business funds also qualify for deduction.

Records to keep and common mistakes

Keep bank statements showing all fees and interest charges throughout the year. Save loan documents that detail interest rates and payment schedules. Maintain credit card statements that separate business charges from personal expenses.

One common mistake is deducting personal loan interest when you occasionally use borrowed funds for business purposes. Another error is claiming interest on loans that exceed the fair market value of business assets purchased.

15. Depreciation, Section 179, and bonus depreciation

Expensive equipment and asset purchases follow special rules when you explore what are business tax deductions apply to capital expenditures. The IRS requires you to spread the cost of long-lasting assets over several years through depreciation rather than deducting the full purchase price immediately. However, Section 179 expensing and bonus depreciation let you bypass these rules and claim larger deductions upfront. Understanding when to depreciate and when to expense helps you maximize current-year tax savings while staying compliant with IRS regulations.

When you must depreciate instead of expensing

You must depreciate assets that have a useful life longer than one year and cost more than the de minimis safe harbor threshold. Office furniture, computers, machinery, buildings, and vehicles all qualify as depreciable property. The IRS assigns each asset type a recovery period ranging from three years for some equipment to 39 years for commercial buildings. You calculate annual depreciation using methods like straight-line or MACRS that spread the cost evenly or front-load deductions in early years.

How Section 179 and bonus depreciation work

Section 179 lets you expense up to $1,220,000 in qualifying property for 2026 instead of depreciating it over multiple years. This election phases out dollar-for-dollar once your total equipment purchases exceed $3,050,000. Bonus depreciation allows you to deduct 60% of eligible property costs in the first year for assets placed in service during 2026. You can combine both methods to maximize first-year deductions on major equipment purchases.

Section 179 requires that you place the asset in service during the tax year you claim the deduction, not just purchase it.

Records to keep and common mistakes

Keep purchase invoices showing asset descriptions, costs, and acquisition dates. Save documentation proving when you placed each asset in service for business use. Maintain depreciation schedules calculating annual deductions for all depreciable property.

A common mistake is expensing personal-use assets under Section 179 when you use them less than 50% for business. Another error is claiming bonus depreciation on used equipment purchased from related parties.

16. Taxes, licenses, and permits

Various taxes, licenses, and permits you pay to operate your business legally create valuable deductions that answer what are business tax deductions beyond typical operating expenses. The IRS lets you write off most business-related taxes and regulatory fees you pay to federal, state, or local governments. This includes property taxes on business real estate, state business taxes, excise taxes on specific goods or services, and licensing fees required to operate legally in your industry. You deduct these costs in the year you pay them, reducing your taxable income while ensuring you maintain compliance with regulatory requirements.

Business taxes and fees that usually qualify

You can deduct real and personal property taxes you pay on business assets like office buildings, warehouses, equipment, and inventory. State and local business income taxes, gross receipts taxes, and franchise taxes all qualify as deductible expenses. Professional licensing fees for trades requiring certification, like contractors, cosmetologists, or real estate agents, create valid deductions. Business registration fees, occupancy permits, health department licenses, and industry-specific permits all count as deductible costs when you must pay them to operate legally.

Sales tax you collect from customers never qualifies as a deduction because you simply act as a collection agent for the government.

What does not qualify as a business tax deduction

You cannot deduct federal income taxes you pay on your business profits, as these represent your personal tax liability rather than a business expense. Sales tax you collect from customers does not qualify because you hold those funds for the government. Penalties and fines for violating laws or regulations never create deductible expenses, even when they relate directly to your business operations.

Records to keep and common mistakes

Keep copies of all tax bills, license applications, and payment receipts showing amounts paid and payment dates. Save canceled checks or bank statements confirming you paid these fees. Maintain correspondence from licensing agencies documenting renewal dates and fee schedules.

A common mistake is deducting personal property taxes on vehicles you use partially for business without calculating the business use percentage. Another error is claiming federal income tax payments as business deductions.

Next steps

Understanding what are business tax deductions you qualify for puts thousands of dollars back in your pocket each year. You now know the 16 most common write-offs that self-employed individuals and small business owners can claim, from home office expenses and vehicle mileage to contractor payments and depreciation. The next step is making sure you track these expenses throughout the year rather than scrambling at tax time to recreate records from memory.

Many business owners save significantly more by working with a tax professional who knows exactly which deductions apply to their situation and how to maximize every opportunity. If you want to ensure you claim every legitimate deduction while avoiding costly mistakes, professional tax preparation from TaxesToday starts at just $99. Our CTEC-certified preparers specialize in self-employed and small business returns, helping you keep more of what you earn while staying fully compliant with IRS requirements.