FounderCatalyst Verified
Earn the badge that tells investors you're ready. Pitch deck and financial model reviewed by a serial angel.
Free stuff
Templates, guides and calculators for founders running their own round — no signup required.
SEIS advance assurance in 5.5 hours
HMRC typically takes 15–40 days to process advance assurance. Andrew White and Otterkin got theirs in just 5.5 working hours.
“We were unsure how to approach SEIS/EIS advance assurance, but FounderCatalyst made the process a breeze. Even better, we had a positive advance assurance confirmed by HMRC in less than five and a half hours! Crazy good. Sam and his team are incredibly knowledgable, clear, helpful and thorough. We could not recommend them more!”
How it happened
From first contact to HMRC submission — here's the step-by-step breakdown of Andrew's 5.5-hour advance assurance.
Submitted Advance Assurance support ticket
Andrew completed our streamlined support ticket and attached his pitch deck and financial forecast model.
Expert review
Our SEIS specialists reviewed the ticket answers and did a deep dive review of the pitch deck and forecast, highlighting any amendments to Andrew.
Application prepared
Following updates to documents, we re-reviewed everything and once we were sure of eligibility, we drafted and finalised the HMRC advance assurance application with all supporting documents.
Submitted to HMRC
This was submitted to HMRC with a positive response received within 5.5 working hours — while advance assurance typically takes 15–40 days.
Ready to get your advance assurance?
Join hundreds of founders who've secured SEIS/EIS advance assurance with FounderCatalyst — fast, affordable, and stress-free.
Partnered with people that push you further
Who we're for
Our services
FounderCatalyst Ltd is a registered company in England and Wales listed as number 12548465. The VAT number is GB 352 3376 08.
© Copyright 2026 FounderCatalyst Ltd. All rights reserved.