One-Sided or Double-Sided? The Referral Reward Debate for SMEs

Every SME setting up a referral program hits the same fork in the road. Do you reward only the person who refers, or do you also give the new customer something?

This is the one-sided versus double-sided reward question, and most business owners guess instead of deciding properly. Here's how to think about it with your own numbers.

What One-Sided and Double-Sided Actually Mean

One-sided means only the promoter gets a reward: cash, a voucher, or a commission when their referral converts. The new customer pays full price.

Double-sided means both sides win. The promoter gets their reward, and the new customer gets a discount, a free add-on, or a credit for signing up.

A Tampines yoga studio might give the promoter a free class and the new student 20% off their first month. That's double-sided. A property agent who pays a flat $200 referral fee to a past client, with no discount for the new buyer, is running one-sided.

Why Double-Sided Usually Converts Better

Double-sided rewards lower the friction for the promoter to actually send the referral. Nobody likes feeling like they're sending a friend to pay full price while they collect a reward quietly on the side.

When there's something in it for the new customer too, the ask feels like a favour, not a sales pitch. "Use my code, you'll save 15%" is an easier sentence to say than "please sign up with this company I get paid for."

This matters a lot in Singapore, where social awkwardness around money is real. Many promoters quietly skip referring at all if they feel like they're profiting off a friend without the friend also benefining.

Where One-Sided Still Wins

One-sided rewards work better for high-ticket, considered purchases where price isn't the main barrier. Insurance, property, and B2B services often fall here.

If your new customer is choosing based on trust and fit rather than price, a discount doesn't move the needle much. The promoter's reward is what matters, because they're the one doing the convincing.

One-sided also protects your margins better. If your product already has thin margins, as many F&B and retail businesses in Singapore do, giving a discount on top of a promoter reward can quietly erase your profit on that sale.

A Quick Gut Check

• Low price point, repeat purchase, decision made fast: lean double-sided.
• High price point, considered decision, trust-driven: lean one-sided.
• Thin margins already: be careful with double-sided, or make the new customer reward small.
• Promoters hesitant to ask friends for money reasons: double-sided removes that hesitation.

The Middle Path Most SMEs Miss

You don't have to pick one forever. Many Singapore SMEs run double-sided for new customer acquisition and one-sided for repeat referrals from the same promoter.

A home cleaning service, for example, might give a new customer $10 off their first booking and the promoter $10 credit. After the third successful referral from the same promoter, the reward shifts to pure cash, because by then they're basically an unpaid salesperson and deserve to be treated like one.

A beauty salon in Orchard does something similar: new customer gets 10% off, promoter gets a free add-on service. Simple, cheap to run, and the maths still works even on a $38 facial.

Test Before You Commit

If you're unsure, run both versions for a month each and compare conversion rates, not just referral counts. A one-sided program might generate more referral attempts, but a double-sided one often converts more of those attempts into paying customers.

Track cost per acquired customer under each structure, not just cost per referral reward paid out. That's the number that tells you which one is actually cheaper.

The right structure depends on your price point, your margins, and how comfortable your customers are asking friends for money-adjacent favours. There's no universal answer, but there is a right answer for your business.

Ready to Test Your Own Reward Structure?

ReferSales lets you set up one-sided or double-sided rewards in minutes, and switch between them without rebuilding your whole program. See which one actually brings in paying customers for your business.

Start your founding member trial at refersales.sg/founding and find your ideal reward structure before your competitors do.