Pre-Roll vs Post-Roll Podcast Ads
Pre-roll is the ad that plays before your episode starts; post-roll is the one that plays after it ends. They're the two bookend slots. Pre-roll reaches almost every listener but gets skipped or skimmed often; post-roll reaches the fewest people, because most have already stopped listening, which makes it the cheapest slot you can sell.
That trade, reach versus attention versus price, is the whole story of ad placement. The three standard positions are pre-roll, mid-roll, and post-roll, and they're not interchangeable. Where an ad sits decides how many people hear it, how engaged they are when they do, and what an advertiser will pay for it. Below is each slot defined, then an honest ranking by value so you can price your own inventory without guessing.
Where each slot sits
- Pre-roll runs in the first ~10–60 seconds, before your intro or content. Nearly every listener who opens the episode hears at least the start of it. The cost: it's also the moment people are most primed to tap forward, so a chunk of that reach is skimmed rather than absorbed.
- Mid-roll runs inside the episode, usually at a natural break. It isn't a bookend, but it's the reference point that makes the other two make sense, because mid-roll consistently commands the highest price of the three. By the time it plays, the listener has chosen to stay, which is exactly the engagement advertisers pay for.
- Post-roll runs after the content ends, often after a sign-off. It's the cheapest slot because the audience has thinned the most, many listeners stop the second the host says goodbye.
Pre-roll vs post-roll, ranked honestly
The fair way to rank these is on two axes at once: how many people hear the ad (exposure) and what advertisers pay per thousand impressions (CPM). Pre-roll wins on reach. Post-roll loses on both, which is why it's priced as a value slot, sometimes bundled free with a pre- or mid-roll buy.
There isn't a clean public CPM table broken out by slot the way there is for overall host-read rates, buyers negotiate slot premiums case by case. What the published data does establish is the ceiling: mid-roll host-read ads run $15–30 CPM, up to $40+, with finance and high-net-worth audiences reaching $40–75, per Podscan's 2025 advertising-rate benchmarks. Pre-roll typically prices below that mid-roll ceiling, and post-roll below pre-roll. The placement-value table below ranks the slots relative to each other rather than inventing a per-slot dollar figure that no source reports.
| Slot | Listener exposure | Relative CPM |
|---|---|---|
| Pre-roll | Highest, heard by nearly everyone who presses play | Mid; below mid-roll |
| Mid-roll | High, only committed listeners remain | Highest of the three |
| Post-roll | Lowest, most listeners have already left | Lowest; often bundled or discounted |
So the plain decision rule: if the goal is reach, pre-roll; if it's engagement per dollar, mid-roll; if it's a cheap add-on or a brand-safe sign-off, post-roll. A skippable slot heard by everyone (pre-roll) and an unskipped slot heard by few (post-roll) are opposite bets, and the price reflects which scarce thing, attention or audience, each one rations.
Why mid-roll beats both bookends
Mid-roll wins because it sits where attention is highest. A listener who's 12 minutes in has already decided your show is worth their time, so an ad there gets heard, not skipped. Host-read ads, common in mid-roll, drove 71% brand recall versus 62% for announcer-read spots, per Nielsen's podcast ad-effectiveness research. That recall edge is part of why advertisers pay the most for the middle of your episode.
Pre-roll's problem is the inverse. It catches the listener at the exact moment they're deciding whether to commit, which is the moment they're quickest to skip. The reach is real, but so is the skim. Post-roll's problem is simpler: by the end, your completion rate decides how many people are even there. If 40% of listeners finish, post-roll reaches roughly 40% of your audience, so its low price is honest, not a bargain.
Should a small show sell these at all?
Probably not yet, and that's worth saying plainly. CPM-based slot ads only pay meaningfully once you have the downloads to sell. Fewer than a third of active podcasters monetize at all, 61% earn under $100 a month, and only 7% hit 5,000+ downloads per episode, per data compiled by Command Your Brand and obsbot. For most shows, growing the audience comes first; the slot conversation comes later. The honest read on the early-stage economics is in our podcast monetization reality check.
When you do start selling, knowing the slot hierarchy lets you package inventory correctly: lead with mid-roll, add pre-roll for reach, and throw in post-roll rather than discounting your premium slots. The same logic shows up in podcast sponsorship deals, where placement and read style drive the rate more than raw download count.
One more mechanical note: slots can be baked in (stitched permanently into the file) or dynamically inserted (swapped per download by the host). Dynamic insertion is what lets you sell the same pre- or post-roll slot to different advertisers over time, and it runs off the same RSS feed that delivers your episodes. Baked-in ads are simpler but locked to whoever you sold them to on day one.
Frequently asked questions
What does pre-roll mean in a podcast? Pre-roll is the ad slot at the very start of an episode, before your intro or content, usually the first 10–60 seconds. It reaches nearly every listener who presses play, which is its strength, but it's also the slot people are quickest to skip, so attention is lower than the reach suggests.
Is post-roll worth selling? Yes, as a value add-on rather than a headline slot. Post-roll is heard by the fewest listeners because most leave when the content ends, so it carries the lowest CPM of the three. Bundle it with a pre- or mid-roll buy instead of discounting your premium inventory to fill it.
Which podcast ad slot has the highest CPM? Mid-roll. It plays after a listener has committed to the episode, so engagement is highest, and host-read mid-rolls draw the strongest brand recall, 71% versus 62% for announcer reads, per Nielsen. Mid-roll host-read CPMs run roughly $15–30, up to $40+, per Podscan.
Can I run pre-roll and post-roll in the same episode? Yes, many shows run all three slots in one episode (pre, mid, post). Just price them by where they sit: highest for mid-roll, lower for pre-roll, lowest for post-roll. Stacking too many ads early, before the listener is invested, is the fastest way to lose them.