Podcast Revenue Calculator

Podcast revenue scales with download count, ad CPM, and how often episodes ship. Ranges circulated in industry commentary put host-read spots, meaning pre-roll and mid-roll slots the host voices, at roughly 20 to 50 CPM, and programmatic spots inserted automatically at 5 to 15. Two slots per episode, one pre-roll and one mid-roll, is a common configuration. Membership income through Patreon, Memberful or a paid subscriber tier sits alongside the advertising line and, at smaller download volumes, frequently exceeds it.

Downloads are counted from server logs rather than from an open connection to the listener’s device, which is what makes podcast measurement unlike the rest of digital advertising. The IAB Tech Lab Podcast Measurement Technical Guidelines, at version 2.2 as of May 2024, set out how a download is legitimately counted, and podcast hosting platforms certify against them. The figure to enter here is whatever the hosting dashboard reports on that basis.

Dynamic ad insertion changes the arithmetic. Modern hosts place new ads into old episodes, so a back catalogue of 200 episodes drawing 1,000 downloads each per month contributes 200,000 downloads beyond new releases. At two slots per episode that is 400,000 impressions, and at a 15 CPM it works out to 6,000 a month. Commentary from creators with two to three year catalogues often puts the back-catalogue share of revenue somewhere around a third to a half, which is the mechanism behind podcast revenue compounding rather than plateauing.

A worked example

With the loaded figures of 10,000 downloads per episode, 4 episodes a month, a 25 CPM and 2 slots, ad revenue is 500 per episode and 2,000 a month. Adding 500 of patron income brings the total to 2,500 a month, or 30,000 a year. The advertising line is 80% of that and the patron line 20%.

Two comparisons follow from that. Cutting the CPM from 25 to 10, the difference between host-read and programmatic inventory, drops ad revenue from 2,000 to 800 and the monthly total from 2,500 to 1,300, while the patron line does not move at all. And a smaller show at 2,000 downloads an episode with a 20 CPM earns 320 a month from advertising against the same 500 of patron income, which is the point at which memberships are carrying the show rather than supplementing it.

What moves the number most

Downloads and episode frequency multiply against each other, so they are interchangeable in the arithmetic even though they are entirely different problems in practice. Publishing 4 episodes a month at 50,000 downloads and publishing 20 at 10,000 both land on 10,500 a month and 126,000 a year on the loaded CPM and patron figures. One is an audience problem and the other a production capacity problem, and the calculator prices them identically.

The CPM matters more than either at small scale, because it multiplies the whole advertising line without touching the patron line. Ad slots per episode behave the same way: moving from 2 to 3 lifts ad revenue from 2,000 to 3,000 a month, though listener tolerance rather than arithmetic is the binding constraint there. A download is also not a listen: automatic downloads deliver episodes to followers whether or not anyone presses play, so the advertising line here is priced on requests for the file rather than on confirmed listening.

The formula behind this

Impressions per episode are downloads multiplied by ad slots. Ad revenue per episode is impressions divided by 1,000, multiplied by the CPM. Monthly ad revenue is that figure multiplied by episodes per month, and the monthly total adds patron income on top. The annual figure is twelve times the monthly one, with no allowance for growth or seasonality across the year, so it reads as a run rate rather than a forecast.