Monzo vs Starling: Best Bank Referral Bonus (Sep 2026)

Banking is one of the most lucrative referral categories in the UK — where a food app offers £5 off, digital banks pay out in actual cash, because a current account customer is worth far more to them over time. Right now we track two live UK bank referral offers, Monzo and Starling, and they no longer pay the same way: Starling is a flat £25, while Monzo has switched to a randomised reward. The difference is in what you have to do to unlock each, and — for Monzo — how much you actually end up with.

The headline numbers

Monzo pays a mystery reward of £10, £20 or £50 for a single card payment of any size — no minimum deposit, but you won't know which amount you've got until the referral completes. Per Monzo's own published odds, 94% of people get £10, 5% get £20, and 1% get £50. Starling pays a flat £25, but asks you to deposit at least £50 within 14 days of opening the account. Guaranteed amount vs. a lower-friction gamble — which one's "better" depends on whether you'd rather bank on the odds or the certainty.

Lowest bar to clear: Monzo

Monzo asks for one card payment — that's the entire condition. No minimum deposit, no switch, no direct debits. The catch is the reward itself: most people land the £10 tier, with £20 and £50 reserved for a small minority. If you've never tried an app-based bank, this is still the lowest-friction way in, just don't go in expecting £25.

Guaranteed reward, one extra step: Starling

Starling's £25 needs a £50 deposit within 14 days rather than just a card payment — a transfer from an existing account clears it in seconds, so it's not a high bar, just a different one. Unlike Monzo's mystery reward, the £25 is fixed and guaranteed once you qualify. In exchange you get an account that regularly tops UK current account satisfaction surveys.

Can you claim both?

Yes — these are separate banks with separate schemes, and nothing stops you opening both and collecting whatever each pays out. Neither requires you to close or move your existing main account, so there's little reason not to claim whichever one you haven't tried yet. Just space applications out by a few weeks if you're planning a mortgage application soon, purely to keep your credit file quiet.

Referral vs switch bonus: know the difference

Banks also run public switching bonuses (via the Current Account Switch Service) that are sometimes larger than referral rewards — but you can almost never combine the two on the same account. Before you sign up, check both numbers and take the bigger one. Referral offers win on flexibility: they don't require you to close or move your existing banking.

The small print that catches people

• Both schemes are for genuinely new customers — old accounts disqualify you.
• Monzo's window is 30 days for the qualifying payment; Starling's deposit needs to land within 14 days.
• On Monzo, whatever tier you're randomly assigned, the person who referred you gets paid the same amount — there's no way to know or influence which tier you'll land on in advance.
• Both track via link, so always start sign-up from the referral link, not the app store.

Full terms, steps and FAQs are on each offer page — start with whichever bank you were curious about anyway, and don't open accounts you won't use.