Free tax tools
MTD checker
Find out whether MTD for income tax applies to you, from when, and what you'll need to do.
Sole trader vs Ltd
Compare take-home pay and total tax as a sole trader and as a limited company.
Self-employed tax
Estimate income tax, Class 4 National Insurance and what you keep from your profit.
Landlord tax
Estimate the tax on your rental profit, including the mortgage interest restriction.
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Rates for 2026 to 2027, checked against GOV.UK →
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MTD for income tax
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