What it means
A laundry service hears that customers regularly recommend it to neighbours, so it offers a small credit when a new household books and pays for its first service. Define who may refer and who counts as a new customer, since a prior buyer, an account from the same household or a self-referral may not qualify, and put these rules in plain language before anyone shares a link.
Choose the reward event carefully. A code click is an introduction, not necessarily a sale, while a first paid order, completed service or period without refund may be a better trigger depending on the business.
Explain when and how rewards arrive, and state expiry, minimum purchase, exclusions and whether rewards can be combined with other offers. A two-sided reward can make the offer useful for both people: the new buyer receives a reason to try the service, while the referrer receives a thank-you.
Keep sharing voluntary, because asking a customer to upload an entire address book can create privacy concerns and annoy people who did not ask to hear from the company. Be clear about paid recommendations too, since the US Federal Trade Commission says a material connection that may affect how people judge an endorsement generally needs clear disclosure.
Provide a simple disclosure the referrer can use, rather than making the reward secret; for example, they can say they receive a credit if a friend buys. Never script a false personal testimonial or reward a particular positive review.
Track referral links or codes without treating them as flawless attribution, by defining an attribution window and explaining cases where codes are missing or duplicated. Measure the whole funnel: invitations or link shares, qualified new buyers, first purchases, repeat orders and refunds, using the same time period for each cohort.
One published study by Schmitt, Skiera and Van den Bulte found that referred customers in a bank's program had higher value in its setting, but it does not prove that every referred customer in every industry is more loyal or cheaper to acquire. Calculate cost per acquired customer using all program costs, including software, promotion, fraud review and administrative time where material; if rewards of $20,000 bring 400 genuine new paying customers, rewards alone are $50 per customer.
Compare contribution after service costs and incentives, since a referred buyer who uses a large discount and never returns may be less valuable than an ordinary buyer. Set controls against gaming such as multiple accounts, self-referrals and collusion on cancelled orders, with proportionate identity checks and a fair appeals route, and respect the referral relationship by never pressuring customers to spam friends.
Test a small program before scaling, address complaints before asking people to recommend the business, and coordinate the reward's accounting and tax treatment with finance, since the real question is whether qualified, profitable customers arrive at a sustainable cost without damaging trust.
In practice
Real-world examples.
Example
A cleaning company gives a referrer and a first-time buyer each a $15 credit after the new customer's first completed paid order. The credit appears in the customer's account only once the order is complete and the refund window has passed. The company records both credits as a cost of acquiring that customer.
Example
A gym offers a free month to a member who introduces a friend, but a friend who cancels within the cooling-off period earns no reward under the disclosed terms. The member is told this in the original offer, so there is no dispute when a cancelled order triggers no credit. The business pays only for introductions that become genuine customers.
Example
The finance team of a meal-delivery firm compares repeat purchase and margin across referral cohorts and other buyer cohorts after 90 days. It finds that referral customers repeat slightly more often but use larger discounts. The team adjusts the reward size before expanding the programme.
Formula
Calculation
Reward cost per referred customer = Rewards paid / Qualified new paying customers
Full acquisition cost per referred customer = (Rewards paid + Other program costs) / Qualified new paying customers
Worked example. A programme pays $20,000 in rewards and brings 400 qualified new paying customers.
- Reward cost per referred customer = $20,000 / 400 = $50.
- Suppose software, promotion and fraud review add another $6,000. Full acquisition cost = ($20,000 + $6,000) / 400 = $26,000 / 400 = $65 per customer.
- If each referred customer generates $90 of contribution before acquisition cost, the net contribution per customer is $90 - $65 = $25, or $25 x 400 = $10,000 across the cohort.Case study
Seen in the real world.
This entirely fictional example follows Palm Laundry, an invented service with informal word-of-mouth. It tested a two-sided credit after a first completed order and monitored repeat business and refunds. The team rejected duplicate self-referrals and changed confusing expiry wording. Early results looked promising, with many invitations and first bookings.
However, the owner noticed that several of the new households booked once for the credit and then lapsed, so she moved the reward trigger from the first booking to the first completed and paid service. She also added a short disclosure line to the sharing message so that referrers stated they would receive a credit. The example does not promise a fixed reduction in acquisition cost. It shows that a small, well-defined test, with honest tracking of repeat business, tells an owner more than a count of invitations ever could.
Watch out
Common mistakes.
- Paying for sign-ups without checking that a genuine new customer purchased.
- Presenting rewarded endorsements without a disclosure where one is needed.
- Counting only rewards while ignoring software, support and fraud costs.
Questions
People also ask.
What is a customer referral program?
A defined way for existing customers to introduce new buyers, sometimes with rewards.
What rewards are common?
Credits, discounts or gifts, provided the economics and terms make sense.
Why use one?
It may bring suitable buyers, but measure full costs, margin and retention rather than assuming they are cheaper or more loyal.
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