SEIS Advance Assurance for UK startups - done properly
SEIS Advance Assurance from HMRC unlocks the most generous early-stage investor tax relief in the world - and is increasingly required before UK angels will commit. The SEIS Advance Assurance Service handles the full application: drafting, evidence pack, HMRC liaison and resubmissions if required.
Used by UK founders preparing for an angel round or accelerator entry. Typical turnaround is 4-8 weeks from start to HMRC approval.
What's Included
Every engagement delivers concrete artefacts you can use immediately.
- Full SEIS Advance Assurance application drafted
- Investor evidence pack covering qualifying conditions
- Business activity confirmation
- Risk-to-capital condition demonstration
- Direct HMRC liaison throughout the process
- Resubmission handling if HMRC requests changes
- Confirmation letter ready to share with investors
How It Works
- Kickoff call. 30-minute scoping to confirm SEIS eligibility and gather business detail.
- We prepare and submit. Avvale drafts the full application and submits to HMRC.
- We liaise with HMRC. Handle any follow-up questions and resubmissions until approval.
Who This Is For
- UK startups preparing for an angel funding round
- Founders entering UK accelerators that require SEIS
- Existing UK businesses pivoting to a qualifying activity
- Investors looking to confirm a portfolio company's SEIS status
Timeline & Delivery
- Format: Full HMRC application + confirmation letter
- Delivery: 4-8 weeks typical HMRC turnaround
- Service includes: All drafting, submission and HMRC liaison
- Eligibility check: Confirmed at kickoff call
Frequently Asked Questions
Do I need SEIS Advance Assurance before raising?
Not legally, but most UK angel investors expect to see it. Without it, you may lose investors who want certainty on the tax relief.
Is my business eligible for SEIS?
Most UK startups under 2 years old, under 25 employees, under GBP 350k gross assets and in a qualifying trade are eligible. The kickoff call confirms.
What if HMRC rejects the application?
We handle resubmission and amend the application based on HMRC feedback at no extra cost.
How long does HMRC take to respond?
4-8 weeks from submission, sometimes faster. We follow up at appropriate intervals.
Do you work with EIS as well?
Yes - we also handle EIS Advance Assurance. Contact us if EIS or SEIS+EIS is needed.
Built by Avvale Consulting
Avvale Consulting has helped 300+ founders across 30+ countries raise capital, win grants and grow their businesses since 2015. Every engagement is delivered by consultants with operating experience in your category - not generalist freelancers.
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