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HMRC internal manual

Stamp Duty Land Tax Manual

Procedure: Notification of additional events taking place

In accordance with Section 90 FA 2003 when the contingent consideration is ascertained notification should be sent to Stamp Office within 30 days to the address here. The notification should quote the deferment reference number and include either a cheque for the additional tax or the details of an electronic payment.

From 1 March 2019, in cases where the transaction becomes notifiable for the first time, the return and any tax due will be required within  14 days from the date the consideration is known.

In cases where more than one additional payment arises in a calendar month for example where the relevant event relates to plot sales, the letter of notification should give details of all the individual sales and incorporate a schedule showing a breakdown of the additional consideration paid on each plot during the month and the tax due.

There is no requirement to file an additional SDLT 1.

If the effect of the notification is that less tax is payable than has already been paid, the amount overpaid shall on a claim by the purchaser be repaid together with interest as from the date of payment in accordance with FA03/Sch10/Para.6.

When the payment of additional consideration is notified the overall transaction value should be taken into account to ensure the correct rate of tax is paid on both the initial and contingent consideration.