Short answer: FAST channels are free, ad-supported streaming TV channels: live, scheduled channels delivered over the internet instead of cable or an aerial, paid for by adverts rather than a subscription. They run inside apps like The Roku Channel, Tubi, Pluto TV and Samsung TV Plus, and they're entirely legal. The non-obvious part is what fills them: most are built from archive content, often a single long-running show on loop, which is why a FAST channel can feel more like a themed playlist than a TV network.
At a glance
FAST channels
| Stands for | Free Ad-Supported Streaming TV |
| Cost to viewer | Nothing, no sign-up usually |
| Biggest US platforms | Roku Channel, Tubi, Pluto TV |
| Share of US TV time | Roughly 6% |
| Legal? | Yes, fully licensed |
What a FAST channel is
Take a traditional TV channel, with a schedule and advert breaks, and deliver it as an internet stream instead of through a cable box or an aerial. That's a FAST channel.
Free means no subscription. Ad-supported means adverts pay for it. Streaming TV means it arrives over your broadband, into an app on a smart TV, streaming stick, phone or browser.
The key word is linear. Like broadcast TV, everyone watching a FAST channel sees the same thing at the same moment. You don't pick an episode; you tune in and join whatever's on. That's the single biggest difference from Netflix-style on-demand viewing, and it's the point: FAST is designed for the "just put something on" moment.
FAST vs AVOD, SVOD and cable
The streaming industry uses a lot of acronyms. This is how FAST sits among them.
| Model | You pay | Live or on demand | Example |
|---|---|---|---|
| FAST | Nothing (ads) | Live, scheduled | Pluto TV channels |
| AVOD | Nothing (ads) | On demand | Tubi's film library |
| SVOD | Subscription | On demand | Netflix |
| Live TV streaming | Subscription | Live | YouTube TV, Sling |
| Cable / satellite | Subscription + box | Live | Comcast, DirecTV |
Most FAST apps mix models: a guide of FAST channels on one tab and a free on-demand (AVOD) library on another. In everyday speech, "FAST" is often used for the whole free app.
What's actually on them
FAST channels are cheap to run, so there are a lot of them, and they fall into a few recognisable types.
Single-series channels. One show, all day: a classic sitcom, a crime drama or a reality franchise, episode after episode. These are among the most watched, because they reliably deliver exactly what the name says.
Genre channels. Westerns, true crime, home renovation, anime, classic films, cooking.
News. 24-hour streams from networks and local station groups, such as ABC News Live, CBS News 24/7 and NBC News NOW, sit on many FAST platforms.
Brand and archive channels. Media companies turn back catalogues into channels: a network's older reality shows, a studio's film library, a sports league's classic games.
Live sport, occasionally. Mostly niche and minor-league competitions, with the odd high-profile game tied to a specific deal.
What you mostly won't find is first-run prime-time television or premium cable networks. The economics don't support it.
How they make money
The business is simple in outline. A content owner licenses or supplies programmes, a platform carries the channel, and adverts are inserted into breaks. The advertising revenue is split between them, or the platform pays a licence fee, depending on the deal.
Because the content is usually already made and paid for, a FAST channel can be profitable on modest audiences. That's why studios with large archives have embraced it: old episodes that earned nothing sitting in a vault now earn a little, all day.
There is a gap between audience and income, though. Industry analysis through 2025 and 2026 found viewing growing faster than ad revenue, with a lot of unsold ad inventory, partly because advertisers want better, more standardised measurement before they commit budgets. For viewers, that mainly shows up as repeated adverts or public-service fillers in breaks.
Where to find them
In the US, the largest platforms by audience are The Roku Channel, Tubi and Pluto TV, with Samsung TV Plus, Sling Freestream, Xumo Play, LG Channels, Vizio WatchFree+ and Plex also significant. Many are built into smart TVs, so you may already have FAST channels without having installed anything.
A practical comparison of the apps themselves, including which devices each runs on, is in our guide to free live TV streaming apps.
Why they've grown so fast
Three things drove it.
Cord-cutting. Viewers who dropped cable, particularly older ones, missed channel surfing. FAST gives it back for free. Measurement firms have found FAST viewing now rivals the biggest subscription services among over-50s.
Smart TVs. TV makers built FAST services into their home screens, so viewers find them by accident. That also gives the manufacturers an advertising business.
Subscription fatigue. As paid streaming prices rose, a free option with no commitment became more appealing.
Estimates put FAST at around 6% of all US TV viewing time in 2026, with well over a hundred million US viewers using at least one FAST service.
The limits worth knowing
No pause, no rewind on most channels. If you want to choose the episode, switch to the app's on-demand section.
Adverts, sometimes repetitive. The same few adverts in rotation is a common complaint.
Picture quality varies. Most streams are HD; some older material is standard definition. 4K is rare.
Channels come and go. Licensing deals expire, and a favourite channel can vanish or move to a different app with little notice.
Regional differences. The UK, Canada and Australia have their own versions of several apps with different line-ups.
FAST and IPTV: how they relate
Technically, FAST is a form of IPTV in the broad sense: television delivered over internet protocol. In practice the terms get used differently. "IPTV" in consumer searches usually refers to paid services that provide a channel playlist or login, some licensed and many not. FAST channels are delivered through the platforms' own apps, openly licensed and free.
The easiest way to tell a legitimate free service from a dubious one is that FAST apps are in every official app store and run by well-known companies, and they never ask for payment or sideloading. For the wider picture, see what IPTV is.
Quick answers
What does FAST stand for? Free Ad-Supported Streaming Television: live, scheduled channels streamed over the internet and paid for by adverts.
Are FAST channels free? Yes. You need an internet connection and a compatible device, but no subscription. Most apps don't even require an account.
Are FAST channels legal? Yes. They're licensed and operated by companies such as Roku, Fox, Paramount, Samsung and Comcast.
What's the difference between FAST and AVOD? FAST is live and scheduled, like TV. AVOD is free on-demand viewing, where you choose what to play. Many apps offer both.
Why do some FAST channels show just one show? Single-series channels are cheap to program and very popular, because viewers know exactly what they'll get.
Can I record FAST channels? Generally not. Most apps don't offer a DVR, though many shows are also available on demand in the same app.
Do FAST channels include local TV? Some platforms carry local news channels, but full local network feeds with prime time and sport generally need an antenna or a paid service.
FAST line-ups, platform audiences and viewing-share estimates change month to month, and channels are added and removed as licensing deals change. Figures here are approximate. Checked September 2026.