Reducing risk and building certainty with Advance Assurance

Jay Desai · Posted on: April 7th 2026 · read

Medicine under the microscope

As HMRC continues its scrutiny of R&D tax relief claims, first‑time claimants are operating in a more challenging compliance environment. 

Businesses making their first R&D claim, particularly those unfamiliar with the scheme rules or unsure about the eligibility of their activities, often encounter common areas of uncertainty around project eligibility, qualifying expenditure, and claim methodology.

These uncertainties can create concern for companies seeking to avoid errors that may result in enquiries, delays, or reductions to their claim. For start‑ups and growing SMEs, Advance Assurance provides a proactive way to manage this risk and introduce greater certainty at an early stage.
 

What is Advance Assurance?

Advance Assurance allows eligible SME claimants, with turnover under £2m and fewer than 50 employees, who have not previously made an R&D claim, to obtain HMRC agreement in advance for their first three claims.

Under the refreshed pilot (launching May 2026), HMRC aims to provide potential claimants faster assurance on two of the following four areas:

R&D project eligibility

Overseas expenditure exemption

Contracted‑out R&D and eligible parties

PAYE/NIC credit cap exemption eligibility

By engaging directly with HMRC on these areas before submitting a claim, businesses can gain clarity on key eligibility points at a time when scrutiny levels are high.
 

Why this matters

In the current environment, Advance Assurance can be a valuable tool for businesses. Rather than reacting to HMRC enquiries after submission, which can be costly and time‑consuming, Advance Assurance enables companies to:

  1. Address high-risk areas early.
  2. Align documentation and processes with HMRC expectations.
  3. Submit future claims with confidence and clarity.

This proactive approach helps protect valuable cashflow at a critical growth stage for start‑ups and early‑stage companies, allowing management to focus time and resources on innovation and growth rather than compliance risk.

Our specialists can help you utilise Advance Assurance with confidence so that you can manage compliance risk at an early stage.

At MHA, we help innovative businesses optimise R&D claims and align funding with long-term growth.

If you’re looking to strengthen your strategy, our team is here to help.

Contact the team.