Agent Services Registration
Why SDLT Verification Matters More Than Ever
From 18 May 2026, conveyancing firms are required to register for HMRC's Agent Services if they pay SDLT to HMRC on behalf of their clients.
This requirement stems from the UK Finance Mortgage Lenders' Handbook, which requires conveyancers to hold all completion monies, including SDLT, before completion. It is the subsequent payment of those funds to HMRC that brings firms within the scope of Agent Services registration.
Whilst conveyancers are not expected to be tax specialists, registration with HMRC inevitably places greater focus on the firm's role in the SDLT process. As regulatory scrutiny increases, firms will need to demonstrate not only that the correct amount of tax has been paid, but also that they have appropriate procedures in place to evidence how that figure was arrived at.
A number of technology providers are introducing SDLT risk assessment tools to assist firms in identifying transactions that may require additional consideration. Whilst these can be useful, they do not remove the conveyancer's responsibility for deciding whether the information used to calculate the SDLT liability has been adequately verified or whether specialist tax advice should be obtained.
This is where 4Stamp provides a fundamentally different approach.
Rather than simply highlighting potential risks, 4Stamp independently verifies the SDLT calculation and assumes responsibility for the tax advice provided. Where the information supplied indicates that specialist advice is required, the purchaser is presented with a straightforward choice: either proceed with specialist tax advice or formally decline it. There is no ambiguity.
This creates a clear and documented audit trail for every transaction. Where tax advice is accepted, responsibility for the accuracy of the SDLT calculation transfers to 4Stamp. Where the purchaser declines tax advice, responsibility remains with the purchaser, with that decision fully evidenced.
The result is a transparent, defensible process that removes uncertainty around SDLT verification and significantly reduces the risk exposure for conveyancing firms.
As firms prepare for the introduction of Agent Services, ensuring there is a robust, independent verification process for SDLT calculations will become increasingly important. The focus is no longer simply on submitting the return, it is on demonstrating that the correct tax has been calculated and that appropriate steps have been taken where specialist tax advice is required.
If you would like to see how 4Stamp can help your firm strengthen compliance, reduce SDLT risk and simplify the verification process, we'd be delighted to arrange a demonstration.
