Tax Calculators

Free tax calculators designed to simplify business finances and help you maximise your income.

USA Tax Calculators — 2026

Built on real 2026 IRS rates — self-employment tax, the QBI deduction, and the new mileage rates.

  • USA Income Tax Calculator

    Calculate your income tax instantly with the Fincsol Income Tax Calculator. Quick, accurate, and designed to keep you tax-ready all year round.

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  • USA Self-Employment Tax Calculator

    Instantly estimate your self-employment taxes, calculate your tax liability, and plan your finances with confidence.

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  • S-Corp Tax Calculator

    See how much an S corporation election could save you in self-employment tax at 2026 rates.

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  • Quarterly Tax Calculator

    Estimate your 2026 IRS quarterly payments with the safe-harbour check that keeps you penalty-proof.

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  • Small Business Tax Calculator

    Estimate 2026 federal tax for your sole proprietorship, LLC, S-corp or C-corp — with the 20% QBI deduction.

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  • DoorDash Tax Calculator

    Dashers: see your self-employment and income tax after the 2026 mileage deduction, and what to set aside.

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  • Uber Driver Tax Calculator

    Enter fares, fees and online miles to see exactly what you'll owe the IRS for 2026.

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  • Lyft Driver Tax Calculator

    Work out your Lyft taxes and weekly set-aside in under a minute with real 2026 IRS rates.

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  • Trucking Tax Calculator

    Owner-operators: estimate 2026 taxes with the $80/day per diem and your actual operating costs.

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  • eBay Tax Calculator

    Reselling on eBay? Estimate tax on your profit and check the $20,000 1099-K rules for 2026.

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  • Amazon Seller Tax Calculator

    FBA & FBM sellers: estimate 2026 tax on your profit after COGS and Amazon fees.

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UK Tax Calculators — 2026/27

Updated for the 2026/27 tax year — including the new dividend tax rates and frozen thresholds.

  • UK Tax Calculator

    Calculate Income Tax, National Insurance, Corporation Tax, VAT, Capital Gains and Dividend Tax instantly — all in one place.

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  • Salary & Tax Deductions Calculator

    Your real 2026/27 take-home pay after Income Tax, National Insurance and pension contributions.

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  • Holiday Entitlement Calculator

    Statutory holiday for full-time, part-time and zero-hours workers — 5.6 weeks, pro-rated correctly.

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  • Limited Company vs Sole Trader

    Side-by-side 2026/27 comparison: which structure leaves you more after tax?

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  • Dividend Tax Calculator

    Calculate dividend tax at the new 2026/27 rates — 10.75%, 35.75% and 39.35% — with the £500 allowance.

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  • Crypto Tax Calculator

    Work out UK Capital Gains Tax on crypto sales, swaps and spending with the £3,000 exemption.

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  • Capital Gains Tax Calculator

    CGT on property, shares and other assets at 18% / 24%, split across your basic-rate band.

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UAE Tax Calculators

Corporate Tax and VAT for UAE mainland and free-zone businesses.

  • UAE Corporate Tax & VAT Calculator

    Use the Fincsol UAE Corporate Tax & VAT Calculator to find out what you owe. Fast, easy to use, and designed for year-round tax readiness.

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