Best podcast sponsor marketplaces: where to start

What to take away

This article covers general podcast-business information. It does not cover individualized advertising, endorsement, copyright, tax, or legal advice. Requirements vary by jurisdiction and platform, so confirm details with the FTC, a CPA, or a media attorney.

The three kinds of marketplace

Podcast sponsor marketplaces fall into three groups. Which one you pick depends on how much control you want over the brands in your feed.

Open ad networks fill unsold inventory automatically. You connect your hosting platform, set a floor CPM, and the network inserts ads from its advertiser pool. Spotify Audience Network, Acast, and Megaphone run this way. You give up control over which brands air, but you get fill rates a solo host cannot match.

Curated brand-deal platforms match you with specific sponsors. Podcorn lets advertisers post campaigns and hosts apply. Gumball brokers host-read deals for mid-size shows. ThoughtLeaders connects creators with brands in tech, finance, and SaaS.

AdvertiseCast, part of Libsyn, shows advertisers the CPM each host sets. RedCircle pairs free hosting with a marketplace where you approve every advertiser. That approval step matters when your audience trusts you on one narrow topic.

Direct-sale tools do not find sponsors for you. SponsorPitch and Podscribe track outreach, contracts, and campaign performance for deals you close yourself. They suit hosts who already have advertiser relationships and want better bookkeeping.

What each marketplace does

Pricing changes, so check each platform's current terms before you commit. The percentages above are typical ranges, not quotes. Hosting requirements differ too: Spotify Audience Network reaches shows hosted on its own tools, while AdvertiseCast and RedCircle take shows from most major hosts.

The math before you sign

A host-read ad at a $25 CPM on 10,000 downloads grosses $250. If the marketplace takes 25 percent, you net $187.50. At 15 percent you net $212.50. Run your own numbers with your actual download count and the platform's stated cut.

The break-even question is simpler: does the marketplace bring you sponsors you could not book yourself? A show with 2,000 downloads and no advertiser relationships still does better with an open network filling at a low CPM than with an empty slot. At 50,000 downloads and a niche audience, a curated platform that finds relevant brands earns its percentage.

Track days to payment, fill rate, and effective CPM monthly. A monthly review of the numbers that matter shows whether a marketplace is earning its cut or just adding a layer.

Disclosures and the FTC

Every sponsored read needs a clear disclosure, whether the deal came through a marketplace or a direct email. The FTC Endorsements, Influencers, and Reviews guidance says material connections between an endorser and a marketer must be disclosed clearly. A platform label does not always make the relationship obvious to a listener.

Put the disclosure where the endorsement is, not in the show notes alone. For audio, say it out loud before the read. For video, show it on screen. The FTC Advertising FAQs for small business confirm that claims must be truthful and supported, and that endorsements must reflect honest experience.

Music and rights questions surface when you build a podcast sponsorship and rights guide for marketplace deals. The U.S. Copyright Office study on copyright and the music marketplace explains that public performance and other uses can involve different licensing paths. A streaming subscription does not cover every use.

Contract terms that bite

Marketplace contracts often include exclusivity windows that prevent you from running a competitor's ad for 30 to 90 days after a campaign ends. Read the sponsor contract clauses to review before you sign. Payment terms matter too: net-30, net-60, and net-90 all change your cash flow.

Check who owns the ad creative, whether you can reject a sponsor, and what happens if a campaign underdelivers. Some platforms require make-goods; others do not. Get the answer in writing.

Common questions

Which marketplace is best for a new podcast?

Start with an open ad network if you have under 5,000 downloads and no advertiser relationships. Spotify Audience Network or Acast will fill inventory automatically while you build your audience. Move to a curated platform like Podcorn, Gumball, AdvertiseCast, or RedCircle once you have a niche and a download count that brands recognize.

How much do podcast sponsor marketplaces take?

Most take 15 to 30 percent of the deal value. Open networks often take around 30 percent because they handle ad serving and reporting. Curated platforms typically take 20 to 30 percent. Direct-sale tools charge a subscription or per-campaign fee instead of a percentage.

Do I still need to disclose sponsors if the marketplace handles it?

Yes. The FTC holds both the advertiser and the endorser responsible for clear disclosure. A marketplace may provide disclosure language, but you are the one saying it on air. Verify the published version and repeat the disclosure every time the ad runs.