This guide walks through a simple method for calculating a referral fee or commission rate you can afford, plus the going rates across a handful of common industries so you know whether your number is in the normal range or an outlier.

Quick Answer

There’s no single “correct” referral fee — it depends on your margin and industry. As a starting point, most percentage-based referral or commission rates fall somewhere between 10% and 30% of the sale, subscription value, or commission earned. SaaS and subscription products tend to sit at the higher end (often 20-30% of recurring revenue) because gross margins are high, while e-commerce and low-margin services typically use flat fees or rates closer to 10-15%.

How to Calculate a Referral Fee You Can Actually Afford

Start with your numbers, not a guess. Work out your customer acquisition cost (CAC) — what you currently spend on ads, sales time, and tools to land one customer, divided by how many customers that spend produced. Then estimate customer lifetime value (LTV): the total profit, not just revenue, a typical customer generates over the time they stay with you.

Your referral fee should come out of the gap between those two numbers. If a referred customer is worth more in lifetime profit than a customer acquired through ads, you have room to pay the referrer more than you’d spend on paid acquisition — that’s the whole point of running a referral program instead of just buying more ads.

Next, decide between a flat fee and a percentage. A flat fee works best when your pricing is fairly uniform (e.g., a $50 credit for every referred signup) — it’s predictable and easy to explain. A percentage works better when deal sizes vary a lot, such as real estate commissions or enterprise software contracts, since it automatically scales the payout to the size of the deal and rewards referrers for sending bigger opportunities.

Finally, decide whether the fee is one-time or recurring. A one-time bounty is simpler to manage; a recurring share of revenue (common in SaaS affiliate programs) costs more over time but is a stronger incentive for partners who care about long-term income rather than a quick payout.

Referral Fee & Commission Benchmarks by Industry

Real estate: the informal industry norm for agent-to-agent referrals is around 25% of the referring side’s gross commission, with a common range of roughly 20-30% depending on lead quality and the local market. Note that RESPA (Section 8) bars paying referral fees for federally related mortgage settlement services to anyone not licensed to perform that service — this restriction is specific to real estate settlement transactions and doesn’t apply to referrals between two licensed real estate agents.

SaaS and software: affiliate and referral programs in this space commonly pay 20-30% as a recurring share of what the referred customer pays, sometimes for a limited period (such as the first 12 months) rather than for the life of the account. High gross margins are what make these richer payouts sustainable.

E-commerce and retail: because margins are thinner, most e-commerce referral and affiliate programs use flat-rate percentages in the 10-15% range on the order value, or smaller category-specific rates, rather than recurring commissions.

Marketing, consulting, and professional services agencies: a common range is 5-10% of the new client’s first contract or project value, sometimes structured as a one-time payment rather than an ongoing share.

Attorney and professional referrals: bar rules (in the U.S., ABA Model Rule 1.5(e) and its state equivalents) generally require that fee-sharing between attorneys be based on the proportion of work performed or a shared assumption of responsibility for the case, and that the client be informed of and consent to the arrangement in writing. Referral fees to non-lawyers for legal referrals are generally prohibited.

Tips and Common Mistakes

Don’t copy a rate from a different industry. A 30% SaaS affiliate rate makes sense against 80% gross margins; the same percentage would wipe out the margin on a typical e-commerce order.

Recalculate periodically. If your average order value, churn rate, or ad costs shift, the fee that made sense a year ago may now be too generous or too stingy — revisit it at least once or twice a year.

Put the terms in writing, especially for anything beyond a small one-time bonus. Cover when the fee is earned (signed contract vs. paid invoice vs. renewal), how it’s paid, and any caps — this avoids disputes later and, in regulated fields like real estate and law, is often required for the arrangement to be enforceable.

Check industry-specific rules before finalizing a structure. Real estate settlement referrals fall under RESPA, and attorney fee-sharing is governed by state bar ethics rules — both can restrict who you’re allowed to pay and how the arrangement must be disclosed.

Don’t make the referrer wait too long or guess at their payout. Clear, prompt payment and an easy way to track referral status are two of the biggest drivers of whether people keep referring you at all.

Explore more: More referral marketing guides.

Referral fee and commission rate benchmarks FAQs

What is a fair referral fee percentage?

Most fair, sustainable referral fees fall between 10% and 30% of the sale, commission, or contract value, with the exact number driven by your profit margin — higher-margin businesses like SaaS can afford to pay more than thinner-margin businesses like retail.

Should a referral fee be a flat amount or a percentage?

Use a flat fee when your pricing is fairly uniform and you want something simple to explain. Use a percentage when deal sizes vary widely, since it scales the payout with the size of the opportunity and rewards referrers for sending higher-value leads.

Are referral fees legal?

Generally yes, but some industries restrict them. In U.S. real estate, RESPA prohibits referral fees for federally related mortgage settlement services paid to unlicensed parties, and attorneys must follow bar rules on fee-sharing and client disclosure. Check the rules that apply to your specific industry before setting up a program.

How often should I revisit my referral fee rate?

Review it at least once or twice a year, or any time your acquisition costs, average deal size, or margins change meaningfully, since a rate calculated on old numbers can quietly become unprofitable or unappealing.

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Photo by Sebastian Herrmann on Unsplash.