Pay your Inheritance Tax bill
Get a payment reference number
You’ll need to get an Inheritance Tax reference number from HM Revenue and Customs (HMRC) at least 3 weeks before you make a payment.
You can:
- apply for a reference number online (unless you need it for a trust)
- apply by post - using form IHT422, Application for an Inheritance Tax reference (the address you need is on the form)