Apply for SEIS & EIS
Advance Assurance
Stop guessing your SEIS/EIS eligibility. Our platform checks if you qualify, estimates your chances, flags risks, and prepares your Advance Assurance application in minutes using AI trained on HMRC’s VCM manual.
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Advance Assurance
Explained Simply
Investors expect it. HMRC requires it before SEIS/EIS shares are issued. And the right preparation can save you weeks of back-and-forth.
HMRC's preliminary confirmation that your company qualifies for SEIS or EIS — the signal investors look for before committing to your round.
Most UK angel investors expect Advance Assurance before they commit. Without it, your round stalls.
Our AI + expert review cuts the typical HMRC turnaround in half. Submission-ready in <24 h.
Explore SEIS & EIS schemes
in more detail
Seed Enterprise Investment Scheme
Perfect for pre-seed and idea-stage startups. SEIS helps you secure early investment by offering investors up to 50% tax relief, making your company far more attractive to angels. Maximum raise: £250k.
EIS Advance Assurance
Ideal for companies moving beyond pre-seed. EIS supports larger rounds with 30% tax relief for investors, making it a crucial tool for seed and Series A fundraising in the UK.
Prepare and submit
Your application faster
Our software helps you prepare a complete Advance Assurance application — structured, aligned with HMRC expectations, and ready for submission without delays.
Run a fast SEIS/EIS eligibility check. Our AI analyses your company structure, activity, and documents against HMRC criteria — highlighting risks instantly.
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Upload your pitch deck, financials, or investor materials. We extract key data and pre-fill your Advance Assurance application automatically.
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AI does the heavy lifting - structuring your application and flagging issues. Legal experts review the final version to ensure it’s HMRC-ready.
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We submit your application and help you manage responses, follow-ups, and investor communication- all in one place.
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Get Started with
Eligibility Check
Answer 8 questions and we'll tell you exactly which scheme you qualify for, with a downloadable summary you can share with investors.
Get a clear, data-driven eligibility signal based on HMRC criteria — so you can decide your next steps with confidence.
Get a clear eligibility signal almost instantly — no long forms or waiting.
Get a clear eligibility signal almost instantly — no long forms or waiting.
Get a clear eligibility signal almost instantly — no long forms or waiting.
Everything you need
to get approved
Apply for Advance Assurance, prepare your application, and manage compliance — all within a single platform, from start to submission.
Enterprise-level Security
Built for modern startups. Manage your cap table, run your funding round, and handle SEIS and EIS in one streamlined platform.
All data stored in UK/EU data centres. Full audit trail. Right to deletion honoured.
Data controller registration confirmed. We never share your AA content with third parties.
All data is encrypted at rest with AES-256 and in transit with TLS 1.3, the same encryption standards used by banks and government systems.
3x times more affordable, 5-10x times faster.
We compare application details against HMRC benchmark to ensure your application is sucessful. This further passes to our internal team to manually verify the information to ensure no errors.
Your questions answered
What is SEIS/EIS Advance Assurance and why do I need it?
Advance Assurance is a confirmation from HMRC that your company is likely to qualify for SEIS or EIS tax reliefs when it raises investment. It gives investors confidence that their tax benefits will be approved, making fundraising easier and faster.
How long does it take to get SEIS/EIS Advance Assurance from HMRC?
HMRC usually takes 4–6 weeks to review and respond to applications, though the timeline can vary depending on their workload and the complexity of your submission. At Undo Capital, we typically process applications within 2–5 working days.
What documents do I need to apply for SEIS/EIS Advance Assurance?
To apply for SEIS/EIS Advance Assurance, you’ll typically need the following documents:
• A completed HMRC application form
• Your business plan and financial forecasts
• A copy of your company’s memorandum and articles of association
• Details of your trading activities
• Information about potential investors (if available)
What are the eligibility criteria for SEIS and EIS?
Key criteria include:
• Your company must have a UK permanent establishment
• You must be carrying out a qualifying trade
• You must meet the asset and employee limits (e.g. gross assets under £350k for SEIS, under £15m for EIS)
• You must raise funds within the scheme’s fundraising limits (£250k under SEIS, £12m under EIS, or £20m for knowledge-intensive companies)
• Money raised must be used for growth and development within a set timeframe
Do I need a lead investor to apply for Advance Assurance?
No, it is preferable that companies show interest from at least one potential investor. This doesn’t have to be a signed commitment — a simple letter or email from an investor can often be enough.
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