Free Tax Deduction Calculators & AI Deduction Finder
Stop guessing what you can deduct. Our free IRS-backed calculators give you an exact dollar amount for medical, mileage, and home office deductions in under two minutes.
Three Calculators. Real Numbers. Zero Guesswork.
Each calculator uses the exact same formulas published in IRS publications. Enter your numbers and get your deduction in seconds.
Medical Expense Deduction Calculator
The IRS only lets you deduct medical expenses that exceed 7.5% of your adjusted gross income (AGI). This calculator tells you instantly whether you qualify and exactly how much you can deduct.
- Based on IRS Publication 502
- Works for 2023 & 2024 tax years
- Covers prescriptions, therapy, dental & more
- Shows your exact deductible amount
Business Mileage Deduction Calculator
At 67 cents per mile in 2024, business mileage is one of the most valuable and most underclaimed deductions for self-employed workers and freelancers. Get your dollar amount in 60 seconds.
- Uses 2024 IRS standard mileage rate (67¢/mile)
- Covers 2023 rate (65.5¢/mile) too
- Built for freelancers, contractors & small biz
- Instant result — no spreadsheet needed
Home Office Deduction Calculator
The IRS offers two methods: simplified ($5/sq ft) and actual (percentage of home expenses). They produce very different results. This calculator runs both and shows which one wins for you.
- Based on IRS Publication 587
- Compares simplified vs. actual method
- Works for homeowners & renters
- Shows exact deduction for each method
Not Sure Where to Start? Try the AI Deduction Finder
Describe your situation in plain English and our AI instantly matches you to the tax deductions most relevant to your life, including ones most people miss.
- 1 Describe your job, home, and lifestyle in a sentence or two
- 2 Our AI matches you to your top 5 most relevant deductions
- 3 Click through to calculate your exact dollar amount
Results personalized to your situation in seconds
How It Works in 3 Steps
Find Your Deductions
Use the AI Deduction Finder to describe your situation. We surface the deductions most relevant to your job, home, and health.
Calculate Your Amount
Pick a calculator, enter a few numbers, and get an instant IRS-formula-based dollar estimate in under two minutes.
Track Your Savings
Your results auto-save to your personal dashboard. See your total estimated deductions — no signup needed.
Common Questions About Our Tax Calculators
Straight answers about how these free tools work.
Can I Deduct This is listed on ToolPilot.ai — a directory of the best free and paid AI tools for work and productivity.
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Yes, all calculators on this page are completely free. No account or signup is required. Simply enter your numbers and get instant results showing your estimated deduction amount and tax savings.
The calculators use current IRS rules and rates for 2025. They provide estimates based on the information you enter. For a precise tax return, always verify results with a tax professional or official IRS publications, as individual circumstances vary.
A deduction reduces your taxable income, which indirectly lowers your tax bill. A tax credit directly reduces the taxes you owe dollar-for-dollar. Credits are generally more valuable — a $1,000 credit saves $1,000 in taxes, while a $1,000 deduction saves only your marginal rate times $1,000 (e.g., $220 if you are in the 22% bracket).
You should itemize if your total qualifying deductions — mortgage interest, state and local taxes up to $10,000, medical expenses above 7.5% of AGI, and charitable contributions — exceed the standard deduction ($15,000 single, $30,000 married filing jointly in 2025). The majority of filers take the standard deduction. Use our Standard Deduction vs Itemizing calculator to compare.