UK Tax Calculators That
Actually Make Sense
Free, instant tax calculations with visual breakdowns and plain-English explanations. Built for directors, landlords, and contractors — not accountants.
Free Tax Calculators
Live results as you type. Visual breakdowns. Scenario comparison. Updated for the 2025/26 tax year.
CGT
Capital Gains Tax
Property, shares, and other assets
DIV
Dividend Tax
Salary vs dividend optimisation
BIK
Company Car Tax
Car vs car allowance comparison
CORP
Corporation Tax
Marginal relief and effective rates
SAL
Salary Sacrifice
Pension and benefit sacrifice
RENT
Rental Income Tax
Landlord tax with mortgage relief
SDLT
Commercial Stamp Duty
Commercial property SDLT
IR35
IR35 Calculator
Inside vs outside take-home pay
Tax Guides & Resources
Capital Gains Tax
CGT guides for property, shares, and other assets.
Dividend Tax
Salary vs dividends, director remuneration, and tax-efficient pay.
Corporation Tax
Corporation tax rates, marginal relief, and company structure.
Property & Rental Tax
Rental income, stamp duty, BTL tax, and mortgage interest relief.
Payroll & Employment Tax
PAYE, company car BIK, salary sacrifice, P11D, P45, and P60 guides.
VAT
VAT registration, thresholds, returns, and compliance.
Making Tax Digital
MTD guides, software comparisons, and landlord preparation.
Budget & Tax News
Budget updates, HMRC announcements, and rate changes.
Why Trust TaxBase?
Every calculation is cross-referenced against HMRC published rates and at least two independent sources. Tax rates are updated within 48 hours of any Budget or rate change. Our calculators are estimates — for tax decisions, always consult a qualified professional.
HMRC
Every rate sourced from gov.uk
48hr
Updated after every Budget
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