Startups made easy. Sorted.

🎁 Ends 30 Sept:  Win a free R&D Tax Credits claim

SEIS EIS Published:  Oct 22, 2019 2 min read

How to apply for SEIS/EIS Advance Assurance

SEIS/EIS Advance Assurance isn’t legally required, it’s optional, but most angel investors will look for a company to have SEIS/EIS Advance Assurance in place before they’ll commit to investing. It generally takes HMRC 2-3 weeks (sometimes as long as 6-8 weeks) to process Advance Assurance applications, so it’s best to get started on this well ahead of starting to talk to potential investors. Sign up to apply for SEIS/EIS Advance Assurance on SeedLegals.

When applying for Advance Assurance, HMRC will require details of at least one proposed investor. They’ll also require your business plan and 3-year financial forecast, that you meet the risk to capital condition, a copy of your latest accounts (if available), a cover letter (which we’ll create for you),  and various other documents that we’ll indicate are needed for your particular application.

Here’s our detailed step by step guide to applying for SEIS/EIS Advance Assurance.

Once you’ve submitted your application you can follow up and contact HMRC regarding your advance assurance application at any time.

It will generally take 2-3 weeks for HMRC to approve your advanced assurance, providing your application is correct and HMRC have no questions or queries.


Book in some time with a member of the SeedLegals team.

Useful SEIS/EIS links



Want to know more? Hit the chat button or book some time with a member of the team here.

Start your journey with us

  • Beulah
  • Brolly
  • Oddbox Transparent
  • Index Ventures
  • Seedcamp
  • Qured