Someone has sent you an Advance Subscription Agreement and asked you to wire money against it before the priced round closes. The terms look a little like the SAFE you saw on a US deal last year - pay now, get shares later - and the question underneath is the one that actually matters for a UK angel: does this keep my EIS or SEIS relief, or does it quietly cost me the tax break?
The short version is that an ASA can keep the relief where a SAFE usually can't, but only if it's drafted the right way. The two instruments do the same job in spirit. They part company on the details HMRC cares about. Here is what an ASA is, the conditions that make it qualify, and how to read the document in front of you.
Same idea as a SAFE. Built, unlike a SAFE, to survive the EIS test.
What an ASA actually is
An Advance Subscription Agreement is a contract under which you pay a company now for shares it will issue later, normally at its next priced funding round. You don't get the shares on the day you pay; you get a binding right to receive them when the round completes, at a price set by that round - usually with a discount to reward you for going in early.
Founders reach for an ASA when they need money before a full priced round can be put together. Agreeing a valuation takes time and legal cost, and a company that needs cash this quarter may not want to wait. The ASA lets the money land now and pushes the valuation question to the round, when there's a lead investor and a number everyone can point to.
For you, the appeal is the early-bird discount and a place at the front of the queue. The catch is that you're paying real cash for something you won't hold until the round closes - so the terms governing when and how those shares get issued do most of the work, and they're the same terms HMRC scrutinises.
The conditions that make an ASA EIS-friendly
SEIS and EIS relief is only available on new, full-risk ordinary shares, paid for in cash and issued without preferential or redemption rights. An ASA can deliver exactly that - but HMRC has set out what an advance arrangement must look like for the shares it produces to qualify. In broad terms, the agreement needs to be:
- Non-refundable. The advance can't be returned to you under any circumstances. If you can get your money back, HMRC treats it less like a share subscription and more like a loan, and the relief falls away.
- Interest-free. No interest accrues on the advance. Interest is a debt feature, and EIS shares can't carry one.
- Free of an open-ended discount. A fixed, capped discount to the round price is fine; a discount that keeps growing or behaves like a guaranteed return is not.
- Subject to a short longstop date. The shares must be issued by a backstop date that isn't far off - HMRC expects no more than around six months. If the round hasn't happened by then, the agreement must still convert into shares rather than drift on.
- Incapable of being varied or cancelled. You can't amend the terms or unwind the deal once it's signed.
Get those points right and the shares the ASA issues can carry full SEIS or EIS relief. Get the longstop wrong, leave a refund clause in, or let the discount run open-ended, and the relief can be lost on what looked like a routine pre-round agreement. The conditions are precise, so it's worth confirming the current position in HMRC's venture capital schemes guidance before you rely on any of this.
How an ASA differs from a SAFE
A SAFE - Simple Agreement for Future Equity - is the American version of the same idea, and it's where the confusion starts. A SAFE also gives you a right to future shares for money paid now. The problem is that it was built for a US tax and legal system that doesn't have anything like SEIS or EIS, so it isn't drafted with HMRC's conditions in mind.
The decisive difference is time. A SAFE can sit open-ended, with no fixed longstop and no requirement that shares ever get issued by a set date - it converts if and when a qualifying round happens, which might be years away or never. That open-endedness is precisely what an ASA is built to avoid. Because relief needs shares issued and paid for at the time, a SAFE that issues none when your money goes in usually doesn't qualify, and the relief can be forfeited.
An ASA, by contrast, is a UK instrument shaped to fit the rules: short longstop, non-refundable, no interest, capped discount. Same purpose, deliberately tighter terms. The table above lines up the points that actually decide the relief.
What to check before you sign one
Not every document labelled an ASA is drafted to qualify, and not every ASA you're offered will have SEIS or EIS in mind at all. Before you wire anything, here are the points worth reading carefully - things to confirm, not a steer on whether to proceed:
- The longstop date. Is it short, and does it sit within HMRC's expectation of around six months? A longstop that's a year out, or absent, is the single most common reason an ASA fails the test.
- Whether the advance is truly non-refundable. Scan for any clause that lets you - or the company - hand the money back. Even an optional refund can be enough to break it.
- The discount mechanics. A fixed cap is fine; check it isn't structured as an ever-growing discount that reads like a guaranteed return.
- The share class on conversion. The shares you'll receive need to be ordinary, full-risk shares with no preferential or redemption rights. Preference shares won't qualify.
- Advance assurance. Ask whether the company has applied to HMRC for advance assurance that the shares should qualify. It isn't a guarantee, but it's a strong signal the round has been set up with the schemes in mind.
A note on what this isn't
This is an explainer, not a recommendation to sign or to walk away from any particular agreement. An ASA that qualifies still puts your money into an early-stage company, and those are among the most likely investments you can make to lose the lot - the tax relief lowers the downside, it doesn't remove the risk. The qualifying conditions are detailed, they turn on the exact wording of the document, and they change with HMRC's guidance and each Budget. Confirm the current rules in HMRC's venture capital schemes guidance, have the agreement and the share class checked, and take FCA-regulated advice before you commit capital.
Frequently asked questions
Does an ASA qualify for EIS?
It can, if it's structured to HMRC's expectations. The advance must be non-refundable, carry no interest and no open-ended discount, and the shares must be issued by a short longstop date that HMRC expects to be no more than around six months. The shares produced must be new, full-risk ordinary shares paid for in cash. Get those points right and the shares can carry SEIS or EIS relief; get them wrong and the relief can be lost. Confirm the current conditions at GOV.UK.
What is the ASA longstop date?
The longstop is the backstop date by which the shares must be issued if the next funding round hasn't completed. HMRC expects it to be short - no more than around six months. A longstop that runs much longer than that, or no longstop at all, is the most common reason an advance arrangement fails the EIS test. Confirm the current expectation at GOV.UK before relying on it.
ASA vs SAFE - which is EIS-friendly?
The ASA. An ASA is a UK instrument designed to fit HMRC's conditions, with a short longstop, a non-refundable advance and no interest. A SAFE is a US instrument that can run open-ended with no fixed longstop, so it usually doesn't qualify for SEIS or EIS and using one can forfeit the relief. They do the same job in principle, but only the ASA is built for the UK schemes.
Is a SAFE the same as an ASA?
No. They share the basic idea - pay now, receive shares at a later round - but they aren't the same document. A SAFE is the US version and can sit open-ended; an ASA is the UK version, drafted with a short longstop and the non-refundable, interest-free terms HMRC needs to see. The difference matters mainly because of how each one is treated for SEIS and EIS relief.
Is this financial advice?
No. This is general information about how Advance Subscription Agreements work and how they compare with SAFEs, not advice on whether to sign one or invest in any company. Whether an ASA qualifies depends on its exact wording and your circumstances, and the rules change. Confirm the current position at GOV.UK and take FCA-regulated advice before committing any money.