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Free Business Tax Deduction Finder by Industry (2026)

Last updated: 2026-04-01

Stop leaving money on the table. Select your business type and industry below to see every tax deduction you may qualify for — complete with IRS form references, estimated savings ranges, and category breakdowns. This tool covers universal deductions, industry-specific write-offs, Section 179 & bonus depreciation, and entity-specific tax benefits. 100% free, no signup required.

1. Select Your Business Type

2. Select Your Industry

How to Use This Tool

Step 1: Select your business type (Sole Proprietor, LLC, S-Corp, or C-Corp). This determines which entity-specific deductions and tax strategies apply to you.

Step 2:Choose the industry that best matches your business. This unlocks industry-specific deductions that many business owners miss — like per diem for truckers, booth rental for salon owners, or COGS for restaurants.

Step 3:Review your personalized list of deductions. Each entry includes the IRS form or schedule where it's reported, an estimated savings range, and a brief explanation. Print or save as PDF for your records.

Tax tip:Share this list with your accountant or use it as a checklist during tax prep to make sure you claim every deduction you're entitled to. Maintained by Ran Chen, an Enrolled Agent and Certified Financial Planner.

Most Commonly Missed Deductions

  • •Home office deduction— even if you work from your kitchen table, a dedicated workspace qualifies. The simplified method gives you $1,500 with minimal recordkeeping.
  • •Self-employment tax deduction— you can deduct 50% of your SE tax above the line, reducing your adjusted gross income even if you don't itemize.
  • •Health insurance premiums— self-employed individuals can deduct 100% of premiums for themselves, their spouse, and dependents as an above-the-line deduction.
  • •Retirement contributions— a SEP-IRA lets you contribute up to 25% of net self-employment income (max $69,000 for 2026), and contributions are due by your tax filing deadline.
  • •Vehicle mileage— at 70¢/mile (2026 est.), 10,000 business miles equals a $7,000 deduction. Keep a mileage log with date, destination, and business purpose.
  • •QBI deduction— the 20% qualified business income deduction is available to most pass-through businesses and can save thousands in taxes.

Frequently Asked Questions

What tax deductions can a small business claim?
Small businesses can deduct ordinary and necessary expenses from their taxable income. Common deductions include home office expenses (Form 8829), business insurance, advertising, office supplies, vehicle mileage (70¢/mile for 2026), professional services, health insurance premiums, retirement contributions (SEP-IRA, Solo 401k), and the Qualified Business Income (QBI) deduction of up to 20%. Industry-specific deductions vary widely — a contractor can deduct tools and surety bonds, while a trucking company can deduct per diem at the DOT rate of $69/day.
How does the QBI deduction (Section 199A) work?
The Qualified Business Income deduction allows owners of pass-through businesses (sole proprietors, LLCs, S-Corps) to deduct up to 20% of their qualified business income. For 2026, the full deduction is available for single filers with taxable income below $191,950 and joint filers below $383,900. Above those thresholds, the deduction may be limited for specified service trades (law, health, consulting, athletics, financial services). The deduction is reported on Form 8995 or 8995-A.
What is the difference between Section 179 and bonus depreciation?
Section 179 lets you deduct the full cost of qualifying business equipment in the year you buy it, up to $1,250,000 (2026 est.). Bonus depreciation allows you to deduct 60% of the cost of qualifying assets in the first year (the rate phases down from 80% in 2024). The key differences: Section 179 is limited to your business income (you can't create a loss), while bonus depreciation can create a net operating loss. Both are reported on Form 4562.
Can I deduct my home office if I have an LLC?
Yes. The home office deduction is available to any self-employed person or business owner who uses part of their home regularly and exclusively for business. You can use the simplified method ($5 per square foot, up to 300 sq ft for a max $1,500 deduction) or the regular method (actual expenses based on the percentage of your home used for business). The deduction is calculated on Form 8829 and reported on Schedule C.
What records do I need to support my tax deductions?
The IRS requires you to keep records that substantiate each deduction: the amount, date, business purpose, and business relationship (if applicable). For expenses over $75, keep the receipt. For vehicle deductions, maintain a mileage log with date, destination, business purpose, and miles driven. For home office, document the square footage and exclusive business use. Keep records for at least 3 years from the filing date (6 years if you underreported income by more than 25%).
Should I use the standard mileage rate or actual expenses for my vehicle?
The standard mileage rate (70¢/mile est. for 2026) is simpler and often better for newer, fuel-efficient vehicles. The actual expense method (gas, insurance, repairs, depreciation) may save more if you drive an older vehicle with high maintenance costs or an expensive vehicle with high depreciation. You must choose the standard rate in the first year you use the vehicle for business — you can switch to actual expenses later, but not vice versa. Track both methods in your first year to compare.
Do S-Corp owners get different deductions than sole proprietors?
S-Corp owners save on self-employment tax by paying themselves a reasonable salary and taking remaining profits as distributions (which aren't subject to FICA). However, S-Corps have additional compliance costs: payroll processing, quarterly payroll tax filings, and annual Form 1120-S. The tax savings typically make sense when net business income exceeds $50,000–$60,000. Both S-Corps and sole proprietors qualify for the QBI deduction, home office deduction, and most business expense deductions.

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