What Is a Good Affiliate Commission Rate for SaaS? Do the Math
Anderro · · 5 min read
A good affiliate commission rate for SaaS is one that pays affiliates no more than about a quarter to a third of the lifetime gross profit of each customer they send. For most subscription products priced between $20 and $200 a month, that lands at 20 to 30% recurring. That range is my judgment from running programs, not a figure from any survey.
So if you searched "what is a good affiliate commission rate" hoping for one number: 20 to 30% recurring is a sensible default. The number you should actually ship comes from your own lifetime value and margin, and working it out takes about ten minutes with your billing data open.
Work back from lifetime gross profit, not the average
The "average affiliate commission rate" you see quoted in forum threads blends products with completely different economics. A tool whose customers stay 40 months can pay 30% forever and stay profitable. Copy that rate on a product with 6-month lifetimes and you are paying affiliates most of your margin.
Here is the method I use:
- Find average monthly revenue per customer (ARPA).
- Estimate average lifetime in months. A rough shortcut is 1 divided by monthly churn, so 7% churn is about 14 months.
- Take your gross margin after hosting, payment processing and support.
- Multiply: ARPA × lifetime × margin = lifetime gross profit per customer.
- Decide what share of that you will give an affiliate. I cap total affiliate cost at 25 to 33%.
- Convert back to a recurring affiliate commission percentage: share × margin.
Step 6 is the useful shortcut. At an 80% gross margin, giving away 25% of gross profit equals a 20% recurring commission on revenue. Giving away 33% equals about 26%. At a 90% margin, the same 33% share supports roughly 30%. Your margin sets your ceiling.
If you have not built the program yet, rate-setting is one step in How to Start an Affiliate Program for Your SaaS, in Order, and it is worth doing before you write any recruiting copy.
The $49/month example: three structures compared
Take a $49/mo product, an average customer lifetime of 14 months and an 80% gross margin. Lifetime revenue is $686 and lifetime gross profit is $548.80.
| Structure | Paid per customer | Share of lifetime revenue ($686) | Share of lifetime gross profit ($548.80) |
|---|---|---|---|
| 20% recurring | $137.20 | 20% | 25% |
| 40% of first payment only | $19.60 | 2.9% | 3.6% |
| $100 flat bounty | $100 | 14.6% | 18.2% |
The 20% recurring commission pays $9.80 a month for 14 months, about $137 in total. It sits right at the bottom of my 25 to 33% ceiling, which means there is room to go to 25% if you need to compete for good affiliates.
The 40% first-payment offer is the trap. It sounds generous on a landing page, but it hands over 3.6% of the value the affiliate created. Experienced affiliates do this arithmetic in seconds and promote someone else.
The $100 bounty is affordable on paper, but look at the timing. You pay $100 after the hold period, around month one, when the customer has paid you $49. You are out of pocket until month three. It also ignores churn: a customer who cancels in month two right after the hold cleared still cost you $100. A recurring commission corrects itself, because when the customer stops paying, so does the affiliate's cut.
When a fixed amount beats a percentage
Percentages break down at the top of your price list. Say you sell a $3,000/yr annual plan. At 20% recurring, an affiliate earns $600 on day one and another $600 every renewal. That might be fine for a self-serve signup. It is not fine if those annual deals usually go through a sales call where your team did the real work and the affiliate sent one intro email.
A fixed amount, say $300 per annual signup, keeps the reward meaningful without paying a percentage of a deal your sales team closed. Fixed amounts also suit:
- Usage-based billing, where invoices swing from $20 to $2,000 and a percentage makes payouts unpredictable.
- Heavily discounted launch pricing, where a percentage of a $5 first month insults the affiliate.
- Free-to-paid funnels where you want to reward the conversion event itself.
Anderro lets you set commissions as a percentage (default 20%) or a fixed amount, paid on every payment the referred customer makes or on the first payment only, so you can pick the structure that matches how your revenue actually arrives.
What second-tier commissions add to the bill
Second-tier commissions pay an affiliate for recruiting other affiliates. They help you grow the affiliate base, but they come out of the same budget.
Back to the $49 example. A 5% second tier calculated on the sale amount costs $2.45 a month, or $34.30 over 14 months. Add it to the 20% recurring tier-one commission and the total is $171.50, which is 31.25% of lifetime gross profit. Still inside the ceiling, but near the top.
Now raise tier one to 25% recurring: $12.25 a month, or $171.50 over the lifetime. Add the $34.30 second tier and you are at $205.80, or 37.5% of gross profit. Over budget.
Note what "on the sale amount" means: 5% of the sale is a quarter of a 20% commission, not 5% of it. Anderro's optional 2nd-tier commission defaults to 5% calculated on the sale amount, so model it exactly as above. If you add a second tier, lower tier one or accept a thinner margin.
Edge cases that should move your rate
Short customer lifetimes. If customers stay six months, lifetime revenue at $49 is $294 and gross profit is $235.20. A $100 bounty would eat about 42.5% of your entire lifetime gross profit of $235.20 at 80% margin, well above a 25 to 33% ceiling. Stick to recurring, which scales down with churn automatically.
Low gross margin. AI products with heavy inference costs can run at 50% margin. A 25% share of gross profit there is a 12.5% affiliate commission percentage. Copying a 30% rate from a 90%-margin competitor would give away 60% of your gross profit.
Long sales cycles. With a 30-day trial plus several weeks of procurement, a 30-day cookie window will miss real referrals. Set the window to 60 or 90 days so the affiliate gets credit for deals that close slowly.
Refund windows. Match your hold period to your money-back guarantee. A 30-day refund policy with a 7-day hold means you pay commissions on sales that later refund.
Launch boosts. A temporary bump to 30% for your first 90 days can attract early affiliates. Publish the end date up front so lowering it later is not a broken promise.
Pull your ARPA, monthly churn and gross margin today, multiply them into lifetime gross profit, and take 25% of it as your starting budget. If that converts to under 15% recurring, fix pricing or retention before you recruit; if it comes out above 30%, you have room to outbid competitors for the affiliates who matter.
Frequently asked questions
Should SaaS affiliate commissions be recurring or one-time?
Recurring is the better default for subscription products. It ties the affiliate's income to customer retention, so affiliates are rewarded for sending people who stay. It also limits your downside when a customer churns early. One-time payouts make more sense for annual or high-priced plans where a percentage would overpay, or when you need to reward a single conversion event like a free-to-paid upgrade.
Is lifetime recurring better than capping commissions at 12 months?
Lifetime recurring is easier to recruit with, and affiliates trust it more. A 12-month cap makes sense when your customers stay for years and lifetime payouts would push total affiliate cost past roughly a third of gross profit. Run the numbers both ways using your real average lifetime. If the capped version still pays a meaningful amount, the cap protects margin without hurting recruitment much.
How long should an affiliate cookie window be for SaaS?
Match it to how long buyers take to pay. For a self-serve product with a short trial, 30 days usually works. If you have a 30-day trial, sales calls or procurement steps, use 60 to 90 days so affiliates get credit for slower deals. A window that is too short quietly underpays your best affiliates, who tend to send considered buyers rather than impulse signups.
Can I lower my affiliate commission rate after launch?
You can, but do it carefully. Give affiliates written notice, apply the new rate only to new referrals, and keep paying existing referred customers at the rate they were signed up under. Cutting rates on customers an affiliate already sent is the fastest way to lose your top partners. Launching with a clearly dated promotional rate avoids most of this problem.
How do refunds affect affiliate commissions?
A refund should cancel or reduce the commission tied to that payment. The cleanest protection is a hold period at least as long as your refund window, so commissions are only approved after the refund risk has passed. If a refund happens after you have already paid out, the usual approach is to deduct it from the affiliate's next payout rather than asking for money back.
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