Introduction
Most referral programmes in retail banking are structured backwards. What happens is that the reward amount gets set first, usually by matching whatever a competitor advertises, then the currency gets chosen for operational convenience, then someone works out what it costs per acquired customer and discovers the channel looks worse than paid social. Reversing that order, starting from cost per unit of perceived value and working outward, changes the reward you end up offering.
This guide covers reward currency, split, qualifying conditions, and tiering, to give you a better understanding of the economics behind each choice.
The direct answer: structuring a referral reward comes down to four decisions in sequence. Choose the currency by cost per unit of perceived value, not by face value. Decide whether to pay one side or both. Gate the reward on a funded action rather than account opening, then decide between a flat reward and a tiered one based on whether your customer value varies enough to justify the added complexity.
Gift cards sourced at wholesale usually win the first decision because they are the only currency that costs less than face value while being perceived as worth more.
By the end of this guide, you will understand:
• How cash, loyalty points, and giftcards compare on cost, perceived value, liability, and operational load
• How to calculate cost per unit ofperceived value, and why face value is the wrong number to compare
• When a double-sided reward pays for itself and when it just doubles the bill
• Which qualifying action to gate on, by product type
• How to size the reward against your own acquisition cost rather than a competitor’s advertised figure
• Why brand selection moves the economics as much as the reward amount does
The Three Reward Currencies Compared
Cash
Cash needs no explanation to the customer, works in every market without localisation, and cannot be criticisedas a disguised discount. For a referral programme running across severalcountries with a small team, that simplicity has real value.
The costs are structural. Cash costs face value plus payout fees, and it costs it every single time with nowholesale discount available at any volume. It requires the recipient’s payment details, which adds a step and, for cross-border payouts, brings anti-money-laundering considerations into a marketing programme. It leaves your product the moment itis paid, so it buys an acquisition and nothing else. And it competes directly with your own interest rate: a customer who reads €15 cash as a rate promotion willcompare it against the savings account down the road.
Loyalty points
Loyalty points can be one of the most effective ways for a bank to structure referral rewards because, unlike cash, the value does not immediately leave the bank's ecosystem. A customer earns the reward through the referral, returns to the bank's rewards environment to redeem it, and creates another engagement point after the referral itself has already been completed. For banks that want referrals to contribute to a broader loyalty strategy rather than operate as a standalone acquisition campaign, that is a significant advantage.
The important part is making the value of those points immediately understandable. Referral rewards work best when customers can look at an offer and quickly understand what they are receiving, so a proposition such as "Refer a friend and earn 3,000 points" becomes considerably stronger when customers already know what those points can unlock. A broad redemption catalogue, clear conversion logic and rewards that customers genuinely want make the loyalty currency feel tangible rather than abstract.
Gift cards
Gift cards are the only one of the three where what you pay is lower than what the customer perceives. You buy at a wholesale discount and the customer receives full face value at the merchant, so the gap between cost and perceived value runs in your direction rather than against you. Delivery is instant and stays inside your app, no payment credentials are collected, and the reward carries a brand the customer recognises, which does some of the persuasion work that a number alone cannot.
A gift card is single-use, so unlike points it builds no ongoing balance with you, and you can give your users the ability to earn points or rewards on top of buying gift cards. However, running a gift card programme across several markets means either a catalogue that localises automatically or a product team curating brand lists country by country, which is the part that consumes headcount. finperks removes the third one, since the catalogue localises per market under a single contract, so nobody on your side maintains brand lists country by country. The first two are real concerns as well and worth designing around rather than arguing away.
The Only Comparison: Cost Per Unit of Perceived Value
Comparing reward currencies by face value tells you nothing, because face value is what the customer sees and cost is what you pay, and the two only match for cash. What one should track is what one euro of perceived customer value costs you to deliver.
Take a programme running 1,000 qualified referrals in a quarter at a €15 reward. Paid in cash, the customer sees €15,000 of value and you pay €15,000, plus a fee on every transfer, plus the payout rails and account details that come with it. Paid in points, the customer sees a headline figure that resolves to something below €15,000, and your cost lands below that as well, though spread across redemption periods and carried as a liability until then. Paid in gift cards, the customer still sees €15,000 of value, at brands they already use, and you pay €11,000 to €13,000 at wholesale.
The €2,000 to €4,000 difference per thousand referrals is the whole argument. A programme doing 1,000 qualified referrals a quarter is looking at a five-figure annual difference on the same advertised reward, with no change to the customer-facing offer and no reduction in perceived generosity.
Brand selection moves it further: Wholesale rates vary by brand and market, averaging around 5 percent across the finperks catalogue and reaching roughly 9 percent on specific brands. Structuring a campaign around the higher-discount brands, while keeping the brands people actually shop at, widens the gap between what the customer receives and what you pay.
The Four Structural Decisions
Decision One: Single-Sided or Double-Sided
A single-sided reward pays the referrer, and a double-sided reward pays both parties and lifts completion on the referred side, because the new customer has a reason to finish the qualifying action rather than stopping at a half-opened account. It also doubles the cost per successful referral.
Double-sided is worth it when your qualifying action has meaningful drop-off, a funded depositor a first card transaction being the usual culprits. If most people who open an account go on to fund it, you are paying twice for a conversion you were getting anyway. Check your own funnel before deciding, and if you split, the halves do not have to be equal. Weighting toward the referred side, who needs the nudge, rather than the referrer, who has already acted, is often the better allocation.
Decision Two: What the Reward is Gated On
Rewarding account opening is the most expensive structural mistake available here. Account creation also tells you nothing about whether you have acquired a customer. The reward belongs behind an action that costs a real person almost nothing and a fraudulent account a great deal.
What counts as that action depends on the product. For a current account, the first salary credit or a deposit above a threshold, since both require a real employer or a real funded account somewhere else. For a card product, the first transaction at a merchant, which means the card has to be delivered, activated, and used. For a payment app, a transfer both sent and received, which takes two real people rather than one. For savings, a deposit held for a minimum period, which filters out the deposit-and-withdraw pattern. For investment or trading, a first trade after verification, which puts the reward at the point your revenue actually starts.
Whichever action you choose, publish it in plain language in the programme terms because most referral support tickets come from people who believed they had qualified, and vague conditions turn a growth channel into a complaints channel.
Decision Three: Flat, Tiered, or Variable
A flat reward is legible, easy to advertise, and easy to forecast. Start there, and add structure only when you can point to a specific reason.
Tiered rewards, where the reward rises with the number of successful referrals, work when you have identified a genuine advocate segment and want to keep them active past the second or third referral. Variable rewards, where the amount reflects the value of the customer acquired, make sense when customer value differs sharply across your products, a basic current account against a premium tier or an investment account, for example. Both add explanation to the offer, and explanation costs conversion.
The trade-offs are worth stating plainly: A flat reward leaves advocate potential on the table. A tiered one needs progress mechanics and clear communication, or it confuses more customers than it motivates. Variable rewards are harder to advertise and invite gaming toward the top tier. And campaign boosts, useful for a seasonal push or a market launch, teach customers to wait for the next boost if you run them too often.
Decision Four: The Amount
Set the reward against your own numbers rather than a competitor’s advertised figure, which reflects their acquisition costs and product economics, not yours. Three inputs decide this.
Start with your blended acquisition cost through paid channels, on a like-for-like basis using the same qualifying action. Referral should come in below it, and if it does not, the structure is wrong rather than the channel. Then look at contribution per acquired customer over your normal payback window, which sets the ceiling. Finally, factor in what the reward costs you rather than what it shows, because at wholesale a €20 gift card can cost less than a €15 cash payout, and a more generous-looking offer becomes the cheaper one.
There is a fourth consideration, and it is about where the reward ends up rather than what it costs. A cash payout leaves your product the moment it clears, so the reward and the relationship have nothing to do with each other after that. A gift card is chosen, stored and redeemed inside your app, which means the reward itself is a session: the customer opens the app to pick a brand, opens it again to pull up the barcode at the till, and every one of those touches happens in your interface rather than in their bank transfer history. This is the reason why banks running embedded gift card features see them become engagement products and not just payout mechanics.
What the Market Has Already Proven
Gift card and voucher mechanics inside banking apps are not a hypothesis, rather several banks have published results.
Nubank embedded gift cards inside its Nu Shopping ecosystem and reported a 62 percent increasein app users and a 52 percent lift in GMV, with more than 250,000 gift cards sold in March 2024 across 50-plus brands. Boursobank, France’s largest online bank by customer count, runs a cashback programme covering 140-plus merchants that has produced over €25M in customer savings at an average rebate rate of around 8 percent. TWINT, Switzerland’s leading payment app with over 5 million active users, saw digital vouchers become its fastest-growing use case, withroughly 120,000 weekly visits to the voucher page. Klarna launched an in-appgift card store in the UK following a US rollout.
For most retail banks and payment apps, gift cards is a great option. Cash only wins when the programme is too small to justify any setup at all, and points only win outright when you already run a redemption catalogue customers actively use. Everywhere else the deciding factor is cost per acquired customer, and gift cards are the only one of the three that improves it without touching the offer, because they are the only currency you buy below face value and the customer receives at full face value. That asymmetry produces everything else: a €20 gift card that can cost less than a €15 cash payout, a brand name doing persuasion work a number cannot do on its own, and a reward that arrives inside your app instead of as a transfer that leaves it.
The points question is not really a choice either, because the two currencies stack, so that means let customers earn points when they buy gift cards through your app and the referral reward becomes the entry point to your loyalty programme rather than a competitor to it. The new customer redeems a €15 card at a brand they already shop at, earns points for doing it, and comes back to put those points toward the next card.
That loop also answers the single-use limitation above: the card is spent once, but the behaviour it starts is not, and you give your users a brand catalogue to shop from instead of just accumulating points.
The pattern across all four is the same: customers engage with brand-denominated value inside a financial app more readily than the sector expected.
Structure the Reward Once, Price It Right in Every Market with finperks
finperks is the prepaid orchestration layer behind referral, cashback, and gifting rewards in European banking and payment apps. Over 1,000 brands across 30-plus countries, each order routed to the best available wholesale rate for that brand in thatmarket, delivered instantly into your app and into Apple Wallet or Google Pass, under one contract, one integration, and one settlement.
Next steps to get started:
- Schedule a demo and technical walkthrough with the finperks team at finperks.com/contact-us.
- Access the API documentation and sandbox environment to begin integration.
- Check out our existing clients like Finanzguru, Flizpay, Recardy, Paylo, and BenefitsBooster for reference.
With over 1,000 brands across 30-plus countries behind a single contract, your app can offer rewards customers actually want in every market you operate in, without a supplier relationship per country. Each order routes to the best available rate for that brand and market, so the reward catalogue drives engagement and cashback margin at the same time.
One contract, one integration and one settlement replace the per-market legal reviews, VAT treatment and reconciliation that otherwise scale with every country you add. Get in touch today!
