About IHT Calculator UK

IHT Calculator UK provides free, accurate inheritance tax calculations for UK estates. Our calculator is updated for 2026/27 HMRC rates and covers nil rate bands, residence nil rate band, spouse transfers, and charitable donations.

All calculations are performed locally in your browser. We do not store, transmit, or process your financial data on any server.

Why Use Our Calculator?

• 100% free — no account or registration required
• Updated for 2026/27 HMRC rates and thresholds
• Covers nil rate band, RNRB, spouse transfers, and charitable donations
• Private — all calculations run in your browser only
• Expert guides and real-world scenarios included