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Solopreneur Expense Tracker
Self-Employed Tax Deduction Calculator
✦ Free Tax Tool

Know Exactly What
You Can Deduct

Enter your monthly expenses and get an instant breakdown of your total deductible business costs, estimated tax savings, and how you compare to industry benchmarks — all calculated in real time.

$0
Cost to use
12+
Deduction categories
Real-time
Results as you type
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Business Profile
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Monthly Business Expenses

Enter your average monthly spend. Annual totals are calculated automatically.

Software & Services
$
$
$
$
Professional & Travel
$
$
$
$
$
$
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Special Deductions
Home Office (Actual Method)
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Vehicle (Standard Mileage)
$
Health & Equipment
$
$
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Your Deduction Snapshot
Total Annual Deductions
$0
Enter your expenses to calculate
Est. Tax Savings
$0
Effective Rate
—%
Expense Ratio
—%
SE Tax Deduction
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Expense Breakdown
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Fill in your expenses above to see a full breakdown
📊 Industry Benchmark Comparison
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Deduction Checklist

How the Calculator Works

Transparent math. IRS-compliant methodology.

1
Actual Expense Method
Monthly expenses are multiplied by 12. Meals are capped at 50% per IRS rules. Contractor payments are fully deductible as business expenses.
2
Home Office Deduction
We calculate the percentage of your home used exclusively for business (office sq ft ÷ total sq ft) and apply that to your annual rent or mortgage.
3
Vehicle Mileage Rate
Business miles are multiplied by the IRS standard mileage rate of $0.67/mile (2024). This is typically more beneficial than the actual expense method.
4
Self-Employment Tax
SE tax is 15.3% on net earnings. You can deduct half of it (the employer-equivalent portion) as an above-the-line deduction, reducing your income tax.
5
Tax Savings Estimate
We estimate your combined federal income tax bracket based on net income and apply it to your total deductions, plus the SE tax half-deduction benefit.
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Benchmark Comparison
Each business type has typical expense ratios based on IRS SOI (Statistics of Income) data. We show how your spending profile compares to your industry peers.

3 Pro Tips to Maximize Deductions

Strategies used by experienced self-employed professionals.

Tip #1 — Retirement
Open a Solo 401(k) or SEP-IRA
These aren't captured in this calculator but are the single largest legal tax reducer available to solopreneurs. A Solo 401(k) lets you contribute up to $69,000 annually (2024) — all pre-tax. Even a modest $10,000 contribution can save $2,500–$4,000 in taxes.
Tip #2 — Timing
Bunch Deductions in High-Income Years
If you expect a big revenue year, accelerate deductible purchases before December 31. Buy that laptop, pay the annual software subscription, and pre-pay January's contractor invoices. Every dollar of deductions saves more when you're in a higher bracket.
Tip #3 — Documentation
Separate Accounts = Easier Proof
Maintain a dedicated business checking account and credit card. The IRS scrutinizes mixed-use accounts heavily. Clean separation makes every deduction defensible and audit-proof — and makes your accountant significantly less expensive to work with.

Frequently Asked Questions

Answers to common self-employed tax deduction questions.

Only the business-use percentage. If you use your internet 80% for business and 20% personally, you can deduct 80% of the bill. For a dedicated business-only line you can deduct 100%. The IRS requires that you have a consistent, reasonable method for estimating the business-use percentage and can document it if audited.
A deduction reduces your taxable income — so a $1,000 deduction saves you $220–$370 depending on your bracket. A credit directly reduces your tax bill dollar-for-dollar. For example, the self-employed health insurance deduction is an above-the-line deduction (taken before calculating AGI), while a child tax credit reduces your final tax liability. Credits are generally more valuable when you can get them.
Both renters and homeowners qualify. For renters, the deductible portion is the business-use percentage of your total rent. For homeowners, you deduct that same percentage of mortgage interest, real estate taxes, repairs, and utilities — but NOT principal payments. Homeowners can also claim depreciation on the office area, though this creates a recapture event when you sell the home. Many homeowners prefer the simplified method ($5/sq ft, max 300 sq ft) to avoid the depreciation complexity.
Yes. The Tax Cuts and Jobs Act eliminated entertainment deductions (sporting events, concerts with clients), but meals that are "ordinary and necessary," have a clear business purpose, and are not lavish remain 50% deductible. You need to document the business purpose, attendees, and amount for each meal. The temporary 100% restaurant deduction (2021–2022) has expired, so we're back to the standard 50% cap.
The IRS flags self-employed returns that show large losses year after year (a business must show profit in 3 of 5 years to avoid the "hobby loss" rule), an expense ratio dramatically above industry norms, or unusually high deductions relative to income. High meal and travel expenses, claiming 100% vehicle business use, and home office deductions that exceed gross income are also common triggers. Having organized documentation — receipts, mileage logs, bank statements — is your best protection if you're ever questioned.

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