Podcast advertising networks: podcast ad networks, minimum spend and podcast sponsorship inventory
Almost every brand that decides to try podcast advertising starts by emailing a network, and a good number of them quit right there. The reply comes back with an insertion order, a quarterly commitment and a number that assumes you are already spending on radio. That is a real barrier, but it is not the whole market. The networks below sell very different things at very different entry points, and knowing which tier you belong in saves a month of unanswered emails.
Platform
commission
You keep
$
On a 30% marketplace you'd keep $, that's $ less.
Matched opportunities
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$
In short
A podcast advertising network is a company that sells ad inventory on behalf of many shows at once, so a brand can place one buy across dozens or hundreds of podcasts instead of negotiating with each host. The largest in the US are Spotify, SiriusXM Media, the iHeart Audience Network, Acast, Amazon Ads with Wondery, Libsyn Ads and the NPR Sales Network. Podtrac ranked the iHeart Audience Network the top US publisher in July 2026 with 55.7 million monthly unique listeners across 26,463 active shows, followed by iHeartPodcasts at 29.8 million, the NPR Sales Network at 16.8 million and Libsyn at 12.8 million. Access varies enormously: Spotify publishes a $250 self-serve minimum, Libsyn Ads campaigns are commonly booked from around $2,500, Acast host-read deals are reported to start near $5,000, and premium managed networks such as SiriusXM Media are reported to sit around $25,000 and up on an insertion order. Most networks publish no minimum at all and quote by sales. Typical 2026 US CPMs run about $5 to $18 programmatic, $15 to $25 pre-roll, $25 to $50 host-read mid-roll and $5 to $10 post-roll. If your budget sits below the network tier, the alternative is buying direct from shows that publish their own rate card, which is what Sponsorships does at 0% commission. All figures here are published or reported industry numbers, illustrative rather than quotes.
Last updated August 2026
$250 to $25k
published or reported entry point across networks
0%
commission when you book a show direct
55.7M
monthly US listeners on the largest network (Podtrac, July 2026)
Why direct
Podcast ad networks, without the middleman
Know which tier will actually take your money
The single most useful thing about a network list is the entry point, and it is the thing nobody publishes. A brand with $3,000 to spend and a brand with $80,000 to spend are shopping in completely different markets, and only one of them should be emailing a managed sales team. Sort by what you can commit before you sort by reach.
Understand what you give up for the convenience
A network buy is fast and it scales, but you usually cannot pick the exact shows, the network takes a cut of what the host earns, and the read is often pre-recorded rather than host-read. Direct deals are slower to assemble and convert better, because the host actually uses the product and says so in their own words.
Compare on CPM and format, not on headline reach
Reach numbers across networks are measured differently and are not directly comparable. What you can compare is the format and the CPM: a $10 programmatic pre-roll and a $45 host-read mid-roll are not the same product and should not be judged against the same cost per acquisition target.
Buy direct when the minimums price you out
Below roughly $10,000 the major networks stop being an option, and that is where most small and mid-market advertisers actually sit. Shows that publish a public rate card will take a single-episode or single-month buy. On Sponsorships you browse those shows, see the CPM before you contact anyone, and pay the host directly with no commission taken out.
How it works
From listed to paid in four steps
Set the budget before you shortlist anything
Decide what you can commit to a first test, and be honest that podcast attribution needs a few weeks to read. Under $2,500 you are looking at self-serve platforms and direct buys. Between $2,500 and $10,000 the marketplaces and mid-tier networks open up. Above $25,000 the premium managed networks will return your email quickly.
Pick the format that matches your goal
Host-read mid-roll costs the most and performs best for consideration and trust, because the audience hears the person they subscribed to endorse you. Pre-roll and programmatic are cheaper per thousand and better for broad awareness or retargeting. Post-roll is the cheapest inventory and the least attentive placement.
Shortlist on audience fit, then ask for the real numbers
Ask any network or show for recent downloads per episode, the split between Apple, Spotify and other apps, and audience demographics. A 20,000 download show with a tight professional audience routinely outperforms a 200,000 download entertainment show for a B2B product, at a fraction of the cost.
Run a test with a unique code, then scale what worked
Give every show and every network its own promo code or vanity URL so you can tell them apart. Run at least three to four weeks, because podcast listening is not same-day. Then put the next budget into the specific shows that produced, which is usually easier to do direct than through a network.
The numbers
Major US podcast advertising networks and platforms in 2026, how you buy and what it takes to get in
// Swipe to see all columns
| Network or platform | What it represents | How you buy | Published or reported entry point |
|---|---|---|---|
| Spotify Ads | Auction-based inventory across Spotify audio and podcast placements | Self-serve ads manager | $250 published minimum, the only hard published floor in the market |
| SiriusXM Media (SXM Media) | SiriusXM, Stitcher and represented premium networks, host-read and programmatic | Managed sales, insertion order only | Not published, reported around $25,000 and up |
| iHeart Audience Network | The largest US publisher by Podtrac: 55.7M monthly unique listeners, 26,463 active shows (July 2026) | Managed sales team | Not published, quoted by sales |
| Acast | More than 140,000 independent and network-backed shows worldwide | Self-serve and managed marketplace | No published minimum, host-read deals reported from about $5,000, starting CPMs of $15 and $25 |
| Amazon Ads with Wondery | Wondery originals and Amazon audio, with first-party purchase data through the DSP | Managed and programmatic DSP | Not published, quoted by sales |
| Libsyn Ads (formerly AdvertiseCast) | More than 1,300 independent shows, ranked #4 US publisher by Podtrac at 12.8M monthly unique | Marketplace, self-serve and managed | No published hard minimum, campaigns commonly booked from about $2,500, programmatic from $12 CPM |
| NPR Sales Network | NPR and member station programs, #3 by Podtrac at 16.8M monthly unique | Managed sponsorship sales | Not published, quoted by sales |
| PodcastOne | Owned and represented shows, #6 in the Podtrac July 2026 ranking | Managed sales team | Not published, quoted by sales |
| Gumball | Host-read inventory with per-show rates visible while you browse | Self-serve marketplace | No published minimum, priced show by show |
| Podcorn | Creator-set flat fees, proposal based rather than CPM based | Marketplace | No published minimum |
| Buzzsprout Ads and AudioGo | Independent and small business focused inventory | Self-serve | No published minimum, built for low entry budgets |
| Sponsorships (direct) | Shows that publish their own audience numbers and rate card | Direct with the host, no intermediary | No minimum spend, flat membership, 0% commission on the deal |
Entry points are either published by the platform or reported by advertisers and industry coverage in 2026, and they move with quarter, category and inventory. Networks that quote by sales generally will not confirm a floor in writing until you ask for a proposal. Treat every number here as a planning benchmark, not a quote or an offer.
Who it is for
Who books podcast ad networks here
Small and mid-market brands under $10,000
This is where most first podcast budgets sit and where the major networks are hardest to access. Self-serve platforms, marketplaces and direct buys from shows with a published rate card will all take your money at this level, and a focused buy on three well-chosen shows usually beats a thin network spray.
Agencies and media buyers
You are managing several clients with different budgets and category conflicts, so you need to know which networks handle exclusivity, which will run a four week flight rather than a quarter, and where the same audience can be reached more cheaply direct. Mixing one network buy with a handful of direct shows is common and keeps the blended CPM sane.
B2B marketers with a narrow audience
Broad reach is close to worthless when your buyer is a controller at a mid-sized manufacturer. Niche professional shows with a few thousand downloads per episode often sell host-read spots for a few hundred to a few thousand dollars, and they will never appear in a network reach ranking. Direct is usually the only way to reach them.
Questions
Podcast advertising networks questions people ask
What is a podcast advertising network?
A podcast advertising network is a company that represents many podcasts and sells their ad inventory to brands as a single buy. Instead of negotiating with each show, an advertiser agrees a budget, a format and a flight with the network, which then distributes the ads across its roster. The network handles trafficking, reporting and payment, and takes a share of the revenue that would otherwise go to the host.
What are the biggest podcast advertising networks?
By Podtrac's July 2026 US publisher ranking, the iHeart Audience Network is the largest at 55.7 million monthly unique listeners, followed by iHeartPodcasts at 29.8 million, the NPR Sales Network at 16.8 million, Libsyn at 12.8 million and Vox Media at 6.5 million, with PodcastOne at number six. Edison Research measures weekly reach differently and put Spotify first in the second quarter of 2026, ahead of the SiriusXM Podcast Network and iHeartPodcasts. The two rankings measure different things, so a network can lead one and not the other.
What is the minimum spend for podcast advertising?
It depends entirely on how you buy. Spotify publishes a $250 self-serve minimum, which is the only hard published floor among the major platforms. Libsyn Ads campaigns are commonly booked from around $2,500, and Acast host-read deals are reported to start near $5,000. Premium managed networks such as SiriusXM Media are reported to sit around $25,000 and up, and direct-sold host-read campaigns at the big networks are widely reported in the $10,000 to $25,000 range. Buying direct from an individual show has no minimum beyond that show's rate.
How much does it cost to advertise on a podcast network?
Podcast advertising is usually priced on CPM, meaning cost per thousand downloads. In the US in 2026, programmatic placements run roughly $5 to $18, pre-roll about $15 to $25, host-read mid-roll about $25 to $50, and post-roll about $5 to $10. Multiply the CPM by the downloads you are buying in thousands to get the spot cost, so a host-read mid-roll at $30 CPM on a show doing 20,000 downloads is about $600 per episode.
Is it better to buy podcast ads through a network or direct?
Networks are better when you need scale quickly, want one invoice and one report, and have the budget to clear their minimum. Direct is better when your budget is modest, your audience is narrow, or you want a genuine host endorsement rather than a produced spot. Direct also costs less for the same placement, because the network cut and the agency margin come out of the same money. Many advertisers run both: a network buy for reach and a short list of direct shows for performance.
How do you buy podcast ads?
Pick your route first. Self-serve platforms let you set a budget, choose targeting and launch without talking to anyone. Marketplaces let you browse individual shows, see rates and send a booking request. Managed networks require an email to a sales team, a brief, and an insertion order, and typically take one to three weeks to go live. In every case you supply either a script for the host to read or a finished audio file, agree the flight dates, and get a delivery report against the impressions you bought.
Do podcast networks take a commission from the host?
Yes. Networks and marketplaces are paid out of the advertising revenue, and the share taken commonly runs from around 15% up to 30% or more, depending on the deal and whether the network also provides production or hosting. That is why the same spot usually costs an advertiser less when bought direct, and pays the creator more. Sponsorships charges creators a flat membership instead and takes 0% of the sponsorship, with payment going straight between the brand and the host.
Book it directly, keep the whole deal
List your audience or find the one you want to reach. Flat membership, 0% commission, payment straight between you and the other side.