Small Business Tax Deductions Checklist

A small business tax deductions checklist organizes ordinary and necessary expenses that owners subtract from income before calculating tax owed.

Expenses qualify when they are common in the industry and helpful for the business, though mixed-use items require documented allocation of the business portion only. The IRS distinguishes deductions, which reduce taxable income, from credits, which reduce tax owed directly. Owners should track receipts and separate business accounts to support claims.

Always Deductible Operating Costs

Many routine expenses qualify fully when tied directly to business operations. These include advertising through SEO or print materials, bank and merchant fees, software subscriptions, contract labor payments, insurance premiums, office rent, repairs, supplies, postage, utilities, and employee wages plus benefits. Separate business bank accounts prevent commingling that complicates tracking.

Expenses Subject to Limits or Documentation

Business meals remain 50 percent deductible in most cases, though certain employee meals qualify at 100 percent. Gifts to clients are capped at the first $25 per recipient. Startup costs receive an initial $5,000 deduction with the balance amortized. Bad debt deductions apply only when the unpaid amount was previously included in gross income on an accrual basis. Entertainment costs are nondeductible.

Home Office and Equipment Rules

Owners who use part of their home regularly and exclusively for business may deduct a portion of depreciation, utilities, and other home expenses based on square footage. Equipment, computers, and furniture generally require depreciation or accelerated write-offs under Section 179 rather than immediate expensing. Larger tools and assets follow the same treatment.

Vehicle and Travel Deductions

Vehicle expenses qualify through either the standard mileage rate or actual costs including gas, maintenance, and depreciation, but only the business-use percentage applies. Parking fees, tolls, and loan interest portions tied to business miles are also eligible. Travel deductions cover airfare, lodging, and transportation when a clear business purpose exists, supported by agendas or meeting records.

Available Business Credits

Credits provide direct reductions in tax liability. Eligible items include the Work Opportunity Tax Credit for hiring from targeted groups, the credit for small employer pension plan startup costs up to $5,000, the fuel tax credit, and credits for energy-efficient commercial buildings or qualified research expenses. The rehabilitation credit applies to historic building work, while builders of energy-efficient homes may claim up to $5,000 per home. Opportunity Zone investments allow deferral of gains.

Record Keeping and Next Steps

Accurate records include mileage logs, receipts, and allocation worksheets for mixed-use items. Publication 535 resources map to current forms for topics such as rent, employee pay, and net operating losses. When businesses involve employees, multiple income streams, or complex assets, professional review helps confirm eligibility and avoid unsupported claims.

Sources

• Credits and deductions for businesses
• Guide to business expense resources
• The 2026 Big List of Tax Deductions for Small Businesses