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HMRC internal manual

Inheritance Tax Manual

Assessing: calculating interest: simple cases

In most cases you can simply charge interest on:

  • the tax now due
  • from the due date (IHTM30151)
  • to the date of the calculation.

But you will have to reduce the interest charge where:

  • there are deposits (IHTM31751) on account to use against the tax, or
  • the estate contains newly advised Income Tax or Capital Gains Tax repayments (IHTM31515).