What Is Earnings Per Click (EPC) in Affiliate Marketing?

Earnings per click, or EPC, is the average commission an affiliate earns for each click they send to a program. It is calculated by dividing total commissions earned by total clicks, often expressed per hundred clicks. Affiliates use EPC to compare programs, and advertisers use it to show partners what their traffic is likely to earn.

How EPC is calculated

EPC equals total commissions earned divided by the number of clicks sent over the same period. If an affiliate earned a certain amount in commission from a given number of clicks, dividing earnings by clicks gives the average value of each click. Many networks multiply the result by one hundred and report earnings per hundred clicks, because per-click values are often small fractions.

What EPC combines

EPC reflects three underlying factors: the conversion rate of clicks into sales, the average value of each sale, and the commission rate. A program with a modest commission rate but high conversion and high order value can produce a higher EPC than one with a generous rate that rarely converts. That is why affiliates often prefer EPC to headline commission rates when choosing programs.

How affiliates use EPC

Affiliates use EPC to decide which programs deserve space in their content, emails, and ads. If an affiliate pays for traffic, EPC must exceed the cost per click for the campaign to be profitable. Affiliates also track their own EPC by page, channel, and audience to see which content earns most, since their EPC can differ substantially from a program's average.

How advertisers use EPC

Advertisers publish or share EPC to attract affiliates, and they monitor EPC by partner to spot problems. A sudden drop may indicate a broken link, a checkout issue, or a change in traffic quality. An unusually high EPC from one partner may reflect excellent targeting, or may be a sign of fraud, such as cookie stuffing, that inserts credit for purchases the affiliate did not influence.

The limits of EPC

EPC is an average over a period, so it can swing with seasonality, promotions, and small sample sizes. Program-wide EPC mixes many audiences and may not predict what a new affiliate will earn. It also ignores what happens after the sale: refunds, retention, and lifetime value. For subscription businesses, a click that produces a long-term customer is far more valuable than one that produces a refunded trial, but EPC may treat them similarly at first.

Revenue per click and revenue per referral

Advertisers often prefer revenue-based metrics. Revenue per click divides the revenue generated by referred customers by clicks, showing what traffic is worth to the business before commissions. Revenue per referral divides revenue by the number of referred customers, showing customer quality. Comparing partners on revenue per referral rewards those who send fewer but more valuable customers.

Improving EPC

For affiliates, EPC improves by sending better-matched traffic, writing content that pre-qualifies readers, promoting products that convert well, and placing links where purchase intent is high. For advertisers, it improves with better landing pages, faster checkout, clearer offers, and commission structures that reward valuable customers.

EPC for subscription and B2B programs

In subscription and B2B programs, a single click can lead to revenue spread over months or years, and sales cycles may be long. EPC measured over a short window will understate the value of traffic that converts slowly or produces long-lived customers. Programs that pay recurring commission should calculate EPC over longer periods, or alongside metrics such as revenue per referral and retention of referred customers, so that partners with high-quality audiences are not undervalued.

EPC and fraud detection

Because EPC compares earnings with clicks, it can expose anomalies. A partner with very few clicks but many credited sales may be relying on cookie stuffing or code leakage, where credit is captured without real referral activity. A partner with huge click volume but near-zero EPC may be sending bot or incentivised traffic. Reviewing EPC alongside click patterns, conversion timing, and customer quality helps separate genuine performance from manipulation.

Reporting EPC honestly

When sharing EPC with affiliates, state the period, whether reversals for refunds are included, and which traffic sources are included. Segmenting EPC by traffic type, such as content, email, and paid, gives partners a more realistic view of what they can expect.

EPC versus conversion rate

Conversion rate shows how many clicks become sales, while EPC shows how much each click earns. A program can have a high conversion rate but low EPC if order values or commission rates are small, so experienced affiliates usually look at both before committing to a program.

Frequently asked questions

How do you calculate EPC?
Divide total commissions earned by total clicks sent in the same period. For example, if commissions and clicks are tracked for a month, earnings divided by clicks gives the average earnings per click. Multiply by one hundred to express it as earnings per hundred clicks, as many networks do.
What is a good EPC in affiliate marketing?
There is no universal benchmark, because EPC depends on product price, commission rate, conversion rate, and audience. A good EPC is one that makes promotion worthwhile for the affiliate and, for paid traffic, exceeds the cost per click. Compare EPC within similar programs and audiences.
Is EPC the same as revenue per click?
No. EPC measures the affiliate's commission per click. Revenue per click measures the revenue the advertiser receives per click before paying commission. Advertisers use revenue per click and revenue per referral to judge traffic quality, while affiliates focus on EPC to judge their own earnings.