UK Inheritance Tax Calculator

Enter the estate value and whether the main residence passes to direct descendants to estimate Inheritance Tax due.

Reflects 2026-27 rates (effective 2026-04-06). Last checked 2026-09-11 · v1. Tax rules change — verify against an official source before relying on this for a filing. Source.

UK Inheritance Tax Calculator

Estimate UK Inheritance Tax due on an estate, including the residence nil-rate band.

This is an estimate for general informational purposes only, not legal or tax advice. It does not account for lifetime gifts within 7 years of death, business/agricultural relief, or transferable nil-rate bands from a previously deceased spouse, all of which can materially change the result.

UK estates benefit from a £325,000 tax-free nil-rate band, plus an extra £175,000 residence nil-rate band if a main home passes to children or grandchildren. Everything above those bands is taxed at 40%, reduced to 36% if at least 10% of the estate goes to charity. Anything left to a spouse or civil partner is entirely exempt.

Example

  • With the default values shown above, this calculator returns: Residence Nil-Rate Band ≈ GBP 175,000.00; Residence Band Taper (estates over £2m) ≈ GBP 0.00; Total Tax-Free Band ≈ GBP 500,000.00; Taxable Estate ≈ GBP 100,000.00; Inheritance Tax Due ≈ GBP 40,000.00.

Frequently Asked Questions

What is the residence nil-rate band?

An extra £175,000 tax-free allowance available when a main residence is left to children, grandchildren or other direct descendants, on top of the standard £325,000 nil-rate band.

Does leaving money to charity reduce the rate?

Yes — if at least 10% of the net estate is left to charity, the Inheritance Tax rate on the rest drops from 40% to 36%.

Sources

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