Calculator directory

UK tax calculators for the way you actually earn

Choose one calculator for the tax question you need to answer. Core tools cover the main tax calculations; specialist platform pages add records, examples and context for particular earning methods.

Core calculators

These are the main calculation tools. Each serves a distinct income or payment question and explains the assumptions behind its estimate.

Income Tax Calculator UK
Estimate UK income tax, National Insurance and take-home pay from employment income.

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Sole Trader Tax Calculator UK
Estimate UK tax for sole traders, freelancers and self-employed people after business expenses.

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Self Assessment Payment Calculator UK
Estimate a UK Self Assessment balancing payment and understand how payments on account may affect the amount due.

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Self Assessment Tax Return Calculator UK
Estimate tax for a UK Self Assessment tax return across employment, self-employment and other income.

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Side Hustle Tax Calculator
Estimate how side hustle income may affect your overall UK tax bill alongside PAYE income.

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Reseller Tax Calculator
Estimate UK tax for Vinted, eBay, Depop, Facebook Marketplace and online reselling income.

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Creator Income Tax Calculator
Estimate UK tax for YouTube, TikTok, Twitch, Patreon, OnlyFans and creator income.

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Dividend Tax Calculator UK
Estimate UK dividend tax more sensibly by understanding how dividends interact with salary, other income, allowances and Self Assessment.

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Landlord Tax Calculator UK
Estimate UK landlord tax on rental income, allowable running costs, the property allowance and residential mortgage-interest tax relief assumptions.

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Digital Product Tax Calculator
Estimate UK tax on courses, templates, downloads, Etsy digital products and online product income.

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SaaS Founder Tax Calculator
Estimate UK tax for solo SaaS founders, indie hackers and software businesses.

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Guidance-first estimates
Results show assumptions and exclusions so an estimate is not mistaken for a completed tax return or personalised advice.
Private by design
Calculator inputs are processed in the browser and no account is required to use the tools.
Official-source context
Calculator pages link to relevant HMRC or GOV.UK material and practical guides explaining the records behind the result.