Free UK Inheritance Tax Calculator (2026/27)

Use our free UK inheritance tax calculator to estimate a potential IHT liability from supported estate assets, debts, home and family details, and allowances.

This is an estimate rather than an official HMRC assessment. Detailed lifetime gifts and APR/BPR are not fully modelled.

• Nil-Rate Band Explained
• Residence Nil-Rate Band
• The 7-Year Gifting Rule
• Inheritance Tax Calculator Guide
• Find a Solicitor

How the estimate is calculated

This inheritance tax calculator uses the information you enter to estimate potential UK Inheritance Tax for 2026/27. It considers supported estate assets, debts, property and home details, savings and investments, pensions, spouse or civil partner circumstances, and transferable allowances.

It adds the supported assets, subtracts debts, applies the relevant nil-rate band and residence nil-rate band assumptions, then estimates tax on the remaining taxable estate. Enter approximate figures if you do not have exact values.

What the calculator includes

The estimate supports property, bank savings, investments, pensions, personal possessions, vehicles, business assets, other assets and debts. It also considers whether a qualifying home passes to direct descendants, spouse or civil partner circumstances, transferable nil-rate band allowances and the residence nil-rate band taper for larger estates.

What the calculator does not include

This is not a full HMRC account. Lifetime gifts are not fully modelled: the gifts question flags circumstances for further consideration rather than calculating every potentially exempt transfer, exemption or taper-relief outcome. Agricultural Property Relief and Business Property Relief are not fully modelled. Trusts, overseas assets, complex family arrangements, disputed valuations and other specialist circumstances may produce a different result.

What the result means

The result is an estimate of the potential IHT position using the figures and answers you provide. It is intended to help you understand the likely allowances, taxable amount and complexity of the estate. It is not an official HMRC assessment, a valuation or legal, tax or financial advice.

Methodology and sources

The calculator applies the supported 2026/27 assumptions shown on this page: a £325,000 nil-rate band, up to £175,000 residence nil-rate band where the conditions are met, the £2 million residence allowance taper threshold, transferable allowances where applicable, and a standard 40% IHT rate.

Current tax year: 2026/27. Page review: September 2026. Read the GOV.UK Inheritance Tax guidance and HMRC Inheritance Tax Manual for the official rules. Professional advice may be appropriate for complex trusts, lifetime gifts, APR/BPR, overseas assets or uncertain valuations.