What JamDoughnut referral code should I use?

Use referral code XKNB during JamDoughnut sign-up, or start from the referral link on this page.

How much is the JamDoughnut sign-up bonus?

Current referral posts describe it as a £3 bonus, usually paid as 300 JamDoughnut points after your first eligible gift-card purchase.

How does JamDoughnut cashback work?

JamDoughnut lets you buy gift cards or vouchers for supported brands and earn cashback in the app, with the public site advertising instant cashback.

New

JamDoughnut £3 Sign-Up Bonus Referral Code

Join JamDoughnut with referral code XKNB for a £3 sign-up bonus, then earn instant cashback when buying gift cards for brands you already shop with.

Quick answer

Use code XKNB for the JamDoughnut offer. New eligible customers can get £3 after meeting the requirement: First eligible JamDoughnut gift-card purchase. Last verified 2026-06-21.

Reward: £3
Referral code: XKNB
Last verified: 2026-06-21

Difficulty: Easy
Time to claim: 5 minutes
Time to payout: After first eligible gift-card purchase

Get £3 ->Referral code: XKNB

Ad / referral links — we may earn a bonus when you sign up.

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How to claim

Open the JamDoughnut referral link above on your phone.
Download the JamDoughnut app and create a new account.
Enter referral code XKNB if it is not applied automatically.
Buy an eligible JamDoughnut gift card or voucher for a brand you already planned to use.
Receive the £3 bonus and instant cashback in the app once the first eligible purchase tracks under JamDoughnut's current terms.
Check the app for Jamtastic weekday prize draws and competitions if you want to take part.

Eligibility & requirements

New JamDoughnut users only.
Must use referral code XKNB or the referral link during sign-up.
Referral posts currently describe the sign-up bonus as £3, usually paid as 300 JamDoughnut points.
Cashback depends on buying eligible gift cards or vouchers through JamDoughnut.
You may need to make a first eligible gift-card purchase before the bonus appears.
Brand availability, cashback rates, and competition terms can change in the app.

Verification notes

Minimum spend/deposit: First eligible JamDoughnut gift-card purchase
Last verified: 21 June 2026

Official source Non-affiliate link Trustpilot

Provider terms can change without warning. Treat this as a verification snapshot and confirm the live terms before applying.

Pros

Clear £3 welcome bonus for new referred users.
Useful if you already buy from supported retailers.
JamDoughnut advertises instant cashback rather than waiting weeks for tracking.
Referral code is short and easy to enter manually.
The app also runs prize draws and competitions.

Watch out for

You normally need to buy a gift card or voucher to trigger the bonus and earn cashback.
Cashback is only useful if you are comfortable pre-buying retailer credit.
Cashout is commonly reported at £10, so the £3 bonus may not be withdrawable by itself.
Rates, brands, and competition prizes can change.

FAQ

What JamDoughnut referral code should I use?: Use referral code XKNB during JamDoughnut sign-up, or start from the referral link on this page.
How much is the JamDoughnut sign-up bonus?: Current referral posts describe it as a £3 bonus, usually paid as 300 JamDoughnut points after your first eligible gift-card purchase.
How does JamDoughnut cashback work?: JamDoughnut lets you buy gift cards or vouchers for supported brands and earn cashback in the app, with the public site advertising instant cashback.

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