Tax Calculators & Guides

Understand UK Income Tax, PAYE, National Insurance, VAT, Capital Gains Tax, Inheritance Tax and Self Assessment.

Published calculators

calculatorMarginal Tax Rate Calculator 2026 to 2027Calculate the extra UK Income Tax due on the next £100 of income using 2026 to 2027 bands for England, Wales, Northern Ireland or Scotland.

Published guides

articleClass 1 National Insurance Explained for 2026 to 2027Understand employee and employer Class 1 National Insurance rates, thresholds and category letters for the UK 2026 to 2027 tax year.