Publisher EPC: the number that decides where traffic goes
Publishers compare offers by earnings per click, not payout. Understanding EPC explains why some well-paid offers get no traffic.
A publisher looking at two offers rarely asks "which pays more per conversion?" They ask "which earns more per click I send?" That number is EPC — earnings per click.
The formula
EPC is simple:
EPC = total earnings ÷ total clicks
= payout × conversion rateAn offer paying 10 per conversion that converts 2% of clicks earns 0.20 per click. An offer paying 4 that converts 8% earns 0.32 per click. The second offer is worth more to the publisher, even though its payout is less than half.
Why this matters for advertisers
When advertisers set payouts, they often benchmark against other payouts. Publishers benchmark against other EPCs. That mismatch explains a common frustration: "our payout is competitive, but nobody is sending traffic."
To attract traffic, an offer needs a competitive EPC for the audience it targets. There are two levers:
- Raise the payout — straightforward, but increases cost per conversion.
- Raise the conversion rate — better landing pages, faster onboarding, fewer form fields, clearer offers. This improves EPC without increasing cost per conversion.
The second lever is usually cheaper, and it compounds.
What publishers should watch
- EPC by placement, not just by offer. The same offer can earn very differently on two pages of the same site. Sub-IDs make this visible.
- Caps and approvals. A high-EPC offer that caps out halfway through the month is worth less than it looks.
- Reversal rates. Conversions that are later rejected for quality reduce real EPC. Sustainable traffic beats spikes.
See how offers are presented in the offer marketplace, or read more about publisher monetization.
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