Applying for SEIS/EIS advance assurance: your startup’s paperwork checklist

SEIS and EIS are powerful tax reliefs that can make your startup far more attractive to early investors. But before you issue shares, you may want certainty from HMRC that the investment will qualify. That is where advance assurance comes in. This post sets out what you need to know and the paperwork that will help you submit a smooth application. It is not legal or tax advice – always speak to your accountant or solicitor if you are unsure about your specific circumstances.

What advance assurance is and why it helps

Advance assurance is a non-binding statement from HMRC’s Small Company Enterprise Centre that, based on the information you provide, the shares you plan to issue are likely to meet the conditions for SEIS or EIS relief. It is not a formal approval, but it gives investors comfort that their tax relief should be available – which often makes the difference between a yes and a no.

You apply online using the HMRC advance assurance service. You will need a Government Gateway account for your company, and you must apply before the shares are issued.

The core bundle you will submit

Your application is not just a form. HMRC expects a collection of documents that explain your business, its trade, and the proposed investment. Gather the following before you start:

• A signed SEIS/EIS advance assurance application form (the online version will guide you, but it is worth having a draft of the key answers offline first).
• Your latest set of statutory accounts, even if they are abbreviated micro-entity accounts.
• A comprehensive business plan or information memorandum.
• A detailed description of the trade you carry on or will carry on.
• A copy of the proposed share subscription agreement, investment agreement, or term sheet.
• An up-to-date copy of your company’s articles of association.
• If you already have a shareholders’ agreement, include it; if not, be ready to explain share rights.
• Any pitch deck that explains your product, market, and growth plans (keep it factual, not overly hype-driven).

HMRC will also ask for supporting documents if you have a complex group structure or if you rely on knowledge-intensive company status. Most early-stage startups will not need those extras, but check the latest guidance on the gov.uk website before submitting.

Proving the trade is qualifying

A core part of the review is making sure your trade is not an excluded activity – things like property development, financial services, legal services, or running a hotel. You will need to describe your trade in enough detail that the caseworker can see where the value sits. Use plain English and avoid jargon.

If you are pre-revenue, the business plan and product descriptions do the heavy lifting. Explain what you are developing, the problem you solve, and how you will generate income when trading begins. If you already have customers, include a brief snapshot of those arrangements. This is not the place for marketing fluff; stick to verifiable facts.

The risk-to-capital condition

From April 2018, every investment must meet the risk-to-capital condition. In simple terms, the company must have genuine risk and the investor must be taking that risk for the chance of a return, not for tax avoidance. In practice, your business plan needs to show:

• That your objectives are to grow and develop the trade over the long term.
• That the investment risk is real (for example, you are pre-profit, you face market uncertainty, or you need funding to build a product that might fail).
• That the tax relief is not the main driver for the share subscription.

HMRC will weigh this against the information you supply, so do not dance around it. Write an honest paragraph about the commercial risks your business faces and why an independent investor would still back you.

Ownership and structure checks

The SEIS scheme has a gross assets test (£350,000 before issue) and fewer than 25 full-time equivalent employees. EIS has a higher assets threshold (£16 million before issue, and £15 million after) and fewer than 250 employees. You do not need to submit audited figures – what is in your accounts and a simple schedule of your proposed share issue is usually enough.

You must also confirm you are not controlled by another company and that you have a permanent establishment in the UK. Again, your accounts and a brief statement will cover this.

Common pitfalls and how to avoid them

HMRC estimates that about half of applications are returned as incomplete. The most frequent reasons:

• Submitting an unsigned form (the online service reduces this risk, but double-check).
• Not including a business plan that is detailed enough to assess the trade.
• Vague descriptions of what the company does, leaving the caseworker with too many questions.
• For groups, missing the parent company’s details and group structure chart.
• For pre-seed ideas, failing to show a credible path to trading activity – a two-sentence idea will not do.

Before you hit submit, ask your accountant or a startup-focused solicitor to review the pack. A small upfront investment in getting it right can save weeks of back-and-forth.

Once you receive the letter

If HMRC is satisfied, you will get a letter confirming advance assurance. File this carefully – you will need it later when you issue the shares and complete the SEIS/EIS compliance statements (form SEIS1 or EIS1). The letter is not a guarantee crystallised relief, because the company and the investor must still meet all conditions at the point of issue. But it is the green light that serious angels and early-stage funds look for.

Keep records of how the shares are paid for, the share register entry, and board minutes authorising the allotment. Good housekeeping here makes the eventual claim process smoother.

Advance assurance is not a rubber stamp, but a well-prepared application makes it a straightforward step. With your key documents in order and a clear, factual business plan, you put your startup in the strongest position to attract tax-advantaged investment.