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Tax Season 2026 — Every Tax Calculator You Need

Tax season doesn't have to be stressful. Use our free calculators to estimate your taxes, plan deductions, and maximize your refund.

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Self Employed Tax Calculator
Income tax and NI for self-employed UK. Instant result with breakdown, formula and payment schedule.
Effective Tax Rate Calculator
Calculate total tax paid as a percentage of income. Enter gross income and total tax — see effective

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Income Tax Brackets Explained — How the System Really Works
7 min read

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