The Interactive Advertising Bureau, which publishes its U.S. podcast advertising revenue study with PwC every year, has tracked American podcast advertising past the two billion dollar mark, and that is one slice of digital audio sitting alongside music streaming, digital radio simulcasts and programmatic audio bought through the same demand-side platforms that buy display. Money that size attracts vendors, and vendors pick names that sound like what the buyer searched for. Two entirely different businesses now answer to the phrase digital audio advertising agency, one of them sells media and the other makes the ads, and a business that hires the wrong one ends up paying a percentage of its ad spend to a company that has never written a script.
Two Businesses Wearing One Name
The first kind is a media buyer. It holds relationships or platform seats with the places audio ads actually run, it plans a schedule against a budget and an audience, it places the buy, and it reports back on impressions, completion rates and whatever attribution the platform supports. Its skill is procurement and measurement. Ask it for a script and you will usually get a template, or a subcontractor, or a station announcer reading your copy over library music.
The second kind is a production house. It writes the spot, casts and directs the voice, licenses or composes the music, mixes to the technical specification each platform demands, and hands over finished files. Its skill is the thirty seconds themselves. Ask it to place a six-figure programmatic campaign and it will either decline or hire someone else without telling you, which you will pay for twice.
Neither one is the wrong answer. Hiring the one that does not do the thing you needed is the wrong answer, and it happens constantly because both of them use the same four words on their homepage. We wrote the general version of this problem in what an audio advertising agency actually does, and the digital half has its own wrinkles worth knowing before anyone signs.
You may only need half of this
We write, cast, direct and mix broadcast ready audio from $199, most jobs delivered in a day, and the files are yours. See exact pricing or tell us about your business and we will send back a premise before you spend anything.
Where the Inventory Is Actually Bought
Understanding the buy side matters even for an advertiser who only wants creative, because the platform decides the format and the format decides the script. Spotify sells its own inventory through a self-serve manager that any business can open an account on, and through its ad exchange for programmatic buyers. SiriusXM Media sells Pandora and the SiriusXM properties. Podcast inventory splits between host-read placements sold directly by shows or their sales networks and dynamically inserted spots sold through hosting platforms such as Megaphone and Acast. Programmatic audio runs through the same demand-side platforms media buyers already use for display, which is how audio ends up on a media plan drawn by people who have never commissioned one.
Two consequences follow. A self-serve platform means a local advertiser can buy streaming audio without an agency at all, which removes the main argument for paying a percentage of spend to someone. And every one of those channels will take a finished audio file. The bottleneck for most small and mid-sized advertisers is not access to inventory. It is having something worth running. Our guide to how to advertise on Spotify walks the self-serve path start to finish, and our media placement page covers the cases where a buy genuinely needs help.
Three Ways the Invoice Gets Written
Agencies bill digital audio in one of three shapes, and the shape tells you more about the firm than the pitch deck does.
A percentage of media spend, commonly somewhere between ten and twenty percent, is the traditional agency model carried over from broadcast. It aligns the agency with bigger budgets rather than better results, and on a self-serve platform the advertiser could have placed the same buy themselves. It makes sense at scale and across many markets. It makes very little sense on a five thousand dollar monthly test.
A monthly retainer buys planning, placement, optimization and reporting at a fixed cost. It is honest about what is being sold, which is a person's time, and it is the right structure for an advertiser running continuously who wants someone watching the numbers every week.
A flat production fee buys the creative and nothing else. This is what we sell and we publish the prices rather than quoting: $199 for fifteen seconds, $249 for thirty and $399 for sixty, written, cast, directed, mixed and delivered ready to upload, most jobs in a day, with volume pricing for campaigns that need a dozen variants. There is no percentage, no retainer and no renewal, and the finished file belongs to the business that paid for it.
Thirty Seconds Before a Skip Button
Streaming audio has a constraint broadcast does not. The listener has a phone in their hand and a button that makes you stop. Here is an original :30 written for that slot, with the performance notes in brackets.
“THE PLAYLIST KNOWS”, :30 streaming audio, fictional client, one voice plus announcer.
SFX: a song fading out mid-chorus. One second of nothing.
MAN [flat, talking to the phone, not to us]: Oh good. An ad.
SFX: thumb tap. Nothing happens.
MAN: Twenty-eight seconds of somebody telling me about their family owned commitment to excellence.
ANNOUNCER [cheerful, immediate, faster than expected]: Bartel Heating and Air, Warrington. No furnace tune-up until November. Ninety-nine dollars.
SFX: one beat.
MAN [suspicious]: That was nine seconds.
ANNOUNCER: We know. Bartel Heating and Air. Go back to your song.
SFX: the song snaps back in at full volume, same chorus.
Sixty-four words. The whole argument is that the advertiser respected the listener's time, and the offer lands inside the window before a thumb moves. A spot built on the assumption that someone is trapped for thirty seconds gets skipped at second four, and platform reporting will show you exactly that as a completion rate you will not enjoy reading.
The Spot That Works on FM Dies on Spotify
Three differences matter enough to change the writing. Streaming listeners are usually in headphones rather than in a car, so the wide dynamic range a broadcast mix flattens is available again, and quiet works. The skip button rewards front-loading the offer instead of building to it. And most platforms serve a clickable companion banner alongside the audio, which means the call to action can be look down rather than remember this phone number, and a script that spends four seconds spelling out a web address is wasting a quarter of the spot.
The comparison between the two mediums, including who each one actually reaches, sits in our piece on streaming audio versus terrestrial radio advertising. Edison Research, which has published the Infinite Dial study annually for more than two decades, has tracked online audio listening to the large majority of Americans aged twelve and over, while Nielsen continues to report that broadcast radio reaches most American adults every week. Both numbers are large, the audiences overlap heavily, and an advertiser running the same file on both is leaving something on the table in each.
Five Questions That Sort Them Out
Ask any firm calling itself a digital audio advertising agency these five, and the answers will place it on one side of the line inside a minute. Who writes the script, you or a subcontractor? Can I hear three spots you produced, not three campaigns you placed? Do I own the finished audio file outright, and for how long? How are you paid, percentage, retainer or flat fee? And if I already have a file, will you place the buy without also selling me creative?
A production house answers the first three immediately and hesitates on the fifth. A media buyer answers the last two immediately and starts describing a partner for the first. A firm that answers all five smoothly is either genuinely both, which exists and costs accordingly, or is reselling someone you could have hired directly.
Where That Leaves You
Decide which half you are buying before you shortlist anyone. If the inventory is on a self-serve platform and the budget is under roughly ten thousand a month, the buy is not the hard part and paying a percentage of it is money spent on access you already have. Commission the creative from whoever can prove they make good audio, place the media yourself or on a fixed retainer, and keep the two invoices separate so you can see which one is working.
The creative half, at a published price
Streaming audio, radio and jingles, produced ready to upload from $199, most jobs delivered in a day, yours to keep with no term and no renewal. See pricing or tell us about your business and we will pitch you a premise on spec.