How to Use the Referral Reward Program ROI Calculator
Referral programs that pay cash or credit to referrers tend to bring in more trusted new customers than ads, but set the reward too high and the program can end up costing more than your existing channels. This calculator takes the reward per successful referral, your baseline channel's average customer acquisition cost (CAC), the program's monthly fixed cost, and expected monthly referrals, and returns the referral program's cost per referral, savings versus your baseline channel, and the minimum referral count needed to break even.
The break-even count is calculated as monthly fixed cost รท (baseline CAC โ referral reward). If you're generating more referrals than that each month, the program is acquiring customers more cheaply than your baseline channel. If the reward is higher than your baseline CAC, no number of referrals can reach break-even, and the reward structure needs a redesign.
Fixed cost should include your referral platform subscription and any management time. Early on, fixed cost makes up a larger share of total spend, so the break-even count looks high โ but cost per referral drops steadily as referral volume grows.
Frequently Asked Questions
It's the minimum number of successful referrals per month needed to cover your program's fixed monthly cost. If your actual referral count exceeds this number, the program is acquiring customers more cheaply than your baseline channel.
In that case, no number of referrals can reach break-even. You'll need to lower the per-referral reward or switch from cash to a lower-cost incentive like store credit or a discount code.