Advance assurance is HMRC’s non-binding view that a planned SEIS share issue is likely to qualify, and most investors expect it before they sign a term sheet. It matters because sophisticated angels and seed funds rarely commit without seeing it first. Here’s what it does and doesn’t do:
Getting SEIS advance assurance right depends on complete documentation, a covering letter that directly answers HMRC’s conditions, and full disclosure of any uncertainty.
| Point | Details |
|---|---|
| Check eligibility first | Confirm trading age, gross assets under £350,000, and fewer than 25 employees before applying. |
| Build the full document pack | Business plan, forecasts, accounts, cap table, and investor details reduce query risk. |
| Write a targeted covering letter | Answer each qualifying condition directly rather than describing the business generically. |
| Disclose uncertainty upfront | Undisclosed facts invalidate assurance faster than disclosed weaknesses ever do. |
| Get professional preparation | Priceandaccountants reviews applications against VCM conditions to cut HMRC queries and turnaround time. |
Advance assurance sits at the very start of the SEIS lifecycle, before a single share has been issued. HMRC looks at your company, your trade, and your funding plans, then gives an opinion, not a guarantee, on whether the proposed issue would likely meet the conditions in the Venture Capital Schemes Manual. That opinion is entirely separate from the compliance statement (SEIS1) you submit later, and separate again from the SEIS3 certificates investors need to actually claim relief.
Why investors chase it so hard: SEIS gives them 50% income tax relief on up to £200,000 of qualifying investment per tax year, plus capital gains tax exemption after three years and reinvestment relief up to £100,000. Your company can raise a maximum of £250,000 under SEIS in total.
Before drafting anything, check your company actually fits the box HMRC has built for SEIS. Miss one threshold and no amount of a polished covering letter will save the application.
Founders sometimes assume “under three years” means since founding. It actually runs from when the company started trading, which can catch out businesses that sat dormant before launching.
HMRC won’t chase you for missing documents. It simply queries the application or rejects it outright, so build the full pack before you submit.
The precise list HMRC expects rarely changes, but the quality of how you present it varies enormously between applications.
You can submit directly through HMRC’s online service or instruct an authorised agent to handle it on your behalf. Most founders raising for the first time benefit from the latter, simply because the covering letter is where applications succeed or fail.
A few practical notes worth knowing before you hit submit:
Getting assurance is the reassurance stage, not the finish line. The real compliance work starts once shares are actually issued to investors.
Advance assurance is discretionary and non-statutory. There’s no formal right of appeal if HMRC declines to give an opinion, which is exactly why the application needs to be right the first time.
Pro Tip: Before you submit, read your covering letter as if you were the HMRC caseworker with no prior knowledge of your business. If any condition isn’t answered in plain terms on the page, it will come back as a query.
A structured review catches the errors that generic templates miss. At Priceandaccountants, applications go through a stepwise check against each condition in the VCM guidance before submission, rather than a single read-through at the end.
The result founders typically see is fewer follow-up queries from HMRC and a shorter path to a decision. Before contacting an adviser, it helps to have your latest accounts, cap table, and a draft of your funding use-of-funds ready, since that’s usually the first thing any review starts with.
| What matters | Why |
|---|---|
| Complete documentation | Missing items cause more delays than any eligibility issue |
| Covering letter quality | Answering conditions directly cuts down HMRC queries |
| Cap table accuracy | Prior EIS/VCT investment history can disqualify a raise |
Most guidance on advance assurance treats it as a paperwork exercise: fill in the form, attach the accounts, wait for the letter. That’s backwards. The application is a diagnostic tool that tells you whether your funding plan actually holds together, weeks before you’ve spent time chasing investors with a story HMRC would reject anyway.
The conventional advice underestimates how much weight the covering letter carries. Founders spend days polishing a business plan and then write three generic paragraphs answering the qualifying conditions, when that letter is precisely what a caseworker reads first and judges the whole application against.
If there’s one thing worth prioritising above everything else on this list, it’s disclosure. Founders instinctively want to present the tidiest possible version of the business, but an assurance built on an incomplete picture is worth less than no assurance at all: it can be invalidated the moment plans shift, and investors who later discover gaps will trust the whole raise less, not just the paperwork.
— Rahamut
Priceandaccountants is the practical alternative to drafting an advance assurance application alone and hoping the covering letter holds up. We specialise in early-stage tech and fintech founders, and we’ve taken more than 20 startups through funding and structuring processes, some now valued well over £50 million.
What that means in practice: your business plan, forecasts, and cap table get checked against the VCM conditions before submission, not after HMRC sends back a query. Our strategic advisory and tax planning service covers SEIS and EIS structuring alongside the wider financial picture investors will scrutinise, so the application isn’t built in isolation from your accounts. If you’re preparing to raise and want the paperwork done properly on the first attempt, get in touch with Priceandaccountants to talk through your funding plans before you submit.
