Inheritance Tax Calculator

Inheritance Tax (IHT) is charged at 40% on the value of an estate above the nil-rate band thresholds. The standard nil-rate band is £325,000

The calculator uses the standard published formula for inheritance tax. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with inches, British pounds, percentages. You can enter values in the units shown — the calculator handles all conversions internally.

The core formula is: IHT = 40% × (estate value − total nil-rate bands). Each step in the calculation is shown so you can verify the result manually.