A founder offers you a place in the round, and the paperwork can take one of two shapes. Either you buy shares now at an agreed valuation, or you sign a convertible: a SAFE, a convertible loan note or an Advance Subscription Agreement that takes your money today and settles the share count at a later round. Most write-ups compare the two on speed and price. For a UK angel that misses the part that usually decides it.
The deciding factor is tax. A priced subscription for new ordinary shares can carry SEIS or EIS relief, and a properly-drafted ASA can too, while a standard SAFE or loan note generally can't. Get that wrong and the discount you negotiated can cost more than it returns. Here's how to weigh the two, led by the consequence that matters most.
The speed argument is real. For a UK angel it rarely outweighs the relief.
What's the difference between a priced round and a convertible?
A priced round means you buy shares now at an agreed valuation; a convertible takes your money now and prices the shares at a later round, usually on a valuation cap or a discount. That single split, price now versus price later, drives everything that follows: your rights, your risk and your tax.
In a priced round the company agrees what it's worth, issues you shares in a defined class, and you become a registered shareholder that day. A convertible skips the valuation argument. A SAFE is a contractual right to future shares with no interest and no maturity; a convertible loan note is debt that converts, carrying interest and a deadline; an ASA is the UK instrument built to fit the tax rules, with a short longstop and no way back. This piece doesn't re-explain what each one is. It's about which shape serves you, the angel writing the cheque.
Why would an angel prefer a priced round?
Because you own shares with a shareholder's rights the day the money lands, and a clean subscription for new ordinary shares is the straightforward route to SEIS or EIS relief. There's no deferral, no cap to argue over later, no risk of a conversion that never comes.
Owning the shares now has quiet advantages. You hold whatever pre-emption, information and voting rights come with the class, so you can follow your winners and see what's happening. Your holding period for the reliefs starts immediately rather than waiting on a future round. And the valuation is fixed: you know exactly what your money bought, rather than discovering it when a later priced round sets the number. The cost is friction. A priced round needs a valuation both sides can defend, lawyers, a shareholders' agreement and sometimes a new share class, which is slower and dearer than signing a two-page convertible.
Is a convertible ever the better route for an angel?
Yes, when speed and cost matter and the tax relief isn't the point of the deal. A convertible lets a round close before anyone fixes a valuation, it's cheap to paper, and the cap or discount pays early money back for going first.
The mechanics reward you for early risk. A valuation cap puts a ceiling on the price your money converts at, so if the priced round comes in higher you still convert at the lower figure and get more shares per pound. A discount converts you at a set percentage below what the new investors pay. Many instruments carry both and apply whichever is better for you. That's genuine upside for backing the company before the crowd. The catch, for a UK angel, is that the same features that make a convertible fast are often the ones that put the tax relief out of reach, which is where the decision usually turns.
Do SAFEs qualify for SEIS/EIS?
Standard SAFEs and convertible loan notes generally do not qualify for SEIS or EIS at the point you sign them; a properly-structured ASA can. The reliefs require new, full-risk ordinary shares, subscribed for in cash and issued at the time, with no right to get your money back. A SAFE issues no shares when your money goes in, and a loan note is debt with a repayment right, so both usually fail the test.
HMRC is explicit that the subscription payment must not be, in effect, a loan, and that an arrangement used to convert a debt into shares won't qualify: see HMRC's Venture Capital Schemes Manual on advance subscription agreements (VCM12025). An ASA is the workaround because it's built to those conditions. To be treated as suitable it must be non-refundable in all circumstances, carry no interest, offer no investor protections, be incapable of being varied, cancelled or assigned, and issue the shares by a longstop date HMRC expects to be no more than around six months. Meet those and the shares can carry full relief, as the GOV.UK venture capital schemes guidance sets out. Miss the longstop, leave in a refund clause, or let the discount run open-ended, and the relief can be lost on what looked like a routine pre-round agreement. For a UK angel where the reliefs are the reason to be in the deal, this is usually the line that decides it. The structures that keep your SEIS/EIS relief and whether SAFEs are EIS-eligible in the UK go through the detail.
Priced round or convertible: which is safer for an angel?
Neither is universally safer, and this isn't a steer towards either. The right shape depends on your own situation, and these are the factors sophisticated angels weigh rather than a verdict:
- Whether SEIS or EIS is the point. If the relief is central to your return, a priced subscription or a correctly-drafted ASA keeps it in play where a raw SAFE or note tends not to. If the relief isn't in the deal, that constraint falls away.
- How much you value rights now. A priced round makes you a shareholder immediately, with the pre-emption and information rights that come with it. A convertible leaves you holding a contract until conversion.
- Deferral risk. A SAFE with no maturity can sit unconverted if a qualifying round never happens. A priced round settles what your money bought on day one.
- Speed and cost. A convertible is faster and cheaper to close. For a small cheque against a slow legal process, that can matter more than it does for a larger one.
- The cap and the discount. On a convertible, those numbers often drive your return more than the choice of instrument. A thin cap can undo the speed advantage.
One thing this piece is not: a recommendation to take a priced round or to sign a convertible. These structures move risk and tax around; they don't remove the underlying danger, and early-stage companies are among the most likely investments you can make to lose the entire stake. Eligibility for the reliefs turns on the exact wording of the document and on your circumstances, and the rules shift with each Budget. Confirm the current position in HMRC's venture capital schemes guidance, have the paperwork and share class checked, and take FCA-regulated advice before you commit capital.
Frequently asked questions
Is a SAFE good for an angel investor?
It depends on what you want from the deal, and this is not a recommendation either way. A SAFE is fast and cheap, and its cap or discount rewards early money. But for a UK angel it carries two drawbacks: a standard SAFE generally does not qualify for SEIS or EIS relief, because no shares are issued when your money goes in, and it has no maturity date, so it can sit unconverted if a qualifying round never happens. If the tax reliefs are central to your return, that is the factor most angels weigh hardest.
Do SAFEs qualify for SEIS/EIS?
Generally not at the point you sign one. SEIS and EIS relief requires new, full-risk ordinary shares subscribed for in cash and issued at the time, with no right to get your money back. A SAFE issues no shares when you pay, and a convertible loan note is debt with a repayment claim, so both usually fail the test. The UK workaround is an Advance Subscription Agreement, which HMRC can treat as suitable if it is non-refundable, interest-free, cannot be varied or cancelled, and issues shares by a short longstop of no more than around six months. Confirm the current position at GOV.UK before relying on it.
Priced round or convertible, which is safer for an angel?
Neither is universally safer; they shift risk in different ways. A priced round makes you a shareholder immediately, fixes what your money bought, and is the clean route to SEIS or EIS relief, but it is slower and costlier to close. A convertible is fast and cheap and rewards early money through a cap or discount, but you hold only a contract until conversion, a SAFE can sit unconverted, and a standard SAFE or loan note usually breaks the tax relief. Which fits depends on your situation. This is general information, not advice.
What is an ASA and why do UK angels use it?
An Advance Subscription Agreement is a UK instrument under which you pay now for shares a company will issue at a later round, usually with a discount. UK angels use it because, unlike a SAFE, it can be drafted to keep SEIS or EIS relief. HMRC treats an ASA as suitable only if the advance is non-refundable in all circumstances, carries no interest, offers no investor protections, cannot be varied or cancelled, and issues the shares by a longstop date of no more than around six months. Get those wrong and the relief can be lost.
Is this financial advice?
No. This is general information about how a priced round and a convertible differ for a UK angel, not advice on which to choose or whether to invest in any company. Whether a structure qualifies for SEIS or EIS turns on its exact wording and your circumstances, and the rules change with each Budget. Confirm the current position at GOV.UK and take FCA-regulated advice before committing any capital.