What is linear TV? How it works and how it's bought

Updated: November 12, 2026

Linear TV is television that airs on a fixed schedule set by the network, delivered through broadcast, cable, or satellite. Viewers watch programs when they air rather than choosing on demand. Advertisers buy :15, :30, and :60 commercial spots within that schedule to reach national or local audiences at scale.

Key takeaways:

 

1. What it is: Scheduled programming on broadcast, cable, and satellite TV.
   
   
2. Who it's for: Brands that need broad reach and credibility, including first-time TV advertisers.
   
   
3. How it works: Networks and local stations sell ad time by daypart, and Nielsen measures each airing's audience.
   
   
4. How it's bought: Nationally or locally, upfront or in the scatter market.
   
   

 

What is linear TV?

The "linear" in linear TV refers to the programming schedule: one show follows the next in a fixed line, and everyone tuned to a channel sees the same program at the same time. Networks deliver linear TV to homes in three ways.

Broadcast networks such as ABC, CBS, FOX, and NBC send free, over-the-air signals through local affiliate stations. Cable networks such as CNN, HGTV, and Food Network reach subscribers through providers like Comcast and Charter. Satellite providers like DirecTV carry the same broadcast and cable networks by dish.

Linear TV channels come in two types. National networks air identical programming coast to coast. Local stations, most of them affiliates of a broadcast network, air network shows alongside their own local news.

 

How is linear TV different from addressable TV?

With addressable TV, cable and satellite providers use household-level data to serve different ads to different homes watching the same program. With standard linear TV, every viewer of an airing sees the same ad. Advertisers who buy addressable trade some of linear TV's scale and cost efficiency for narrower targeting.

 

Where does Connected TV fit?

Connected TV (CTV) is TV content streamed through internet-connected devices, like smart TVs and streaming sticks. Advertisers use linear TV to build demand at scale and CTV to add household-level targeting or engage younger audiences. For a full breakdown, see our guide: Linear TV and CTV Advertising: Answers to Marketers' Biggest Questions.

 

Who watches linear TV?

Linear TV still carries most of the TV time advertisers can buy. Among US adults, broadcast and cable made up 55.6% of ad-supported TV viewing in the second quarter of 2026.

TV in general reaches 90% of the US population in a given week, and live sports draw its biggest crowds. Sports made up 96 of the 100 most-watched TV programs of 2025, and Super Bowl LX drew 125.6 million viewers across TV and streaming in February 2026.

The median linear TV viewer is 61 years old. Older Americans also drive consumer spending: households headed by someone 50 or older account for more than half of US consumer spending.

 

How does linear TV advertising work?

With linear TV, you buy commercial spots inside a network's scheduled breaks. The network or station airs your spot at its set time, and Nielsen reports how many people watched.

 

Programming schedules and dayparts

Networks divide the broadcast day into dayparts: blocks of hours grouped by who's watching. Each daypart reaches different viewers at a different price.

1. Early morning (6 to 9 a.m.): Network morning shows and local news catch viewers as they get ready for work and school. People tune in for short stretches, so advertisers use mornings to build frequency and reach shoppers before their day starts.
   
   
2. Daytime (9 a.m. to 4 p.m.): Talk shows, game shows, soap operas, and court shows reach retirees, parents, and shift workers at home. Rates run well below prime, and viewers at home can visit a website or call during the break, which makes daytime a common starting point for advertisers who want an immediate response.
   
   
3. Early fringe and prime access (4 to 8 p.m.): Local news, entertainment news, and syndicated hits like Wheel of Fortune and Jeopardy! reach viewers as they get home. Local stations program much of this window so it fits local and regional buys.
   
   
4. Prime time (8 to 11 p.m. Sundays start an hour earlier): Scripted series, live sports, and major events draw the day's biggest audiences at the highest rates, and prime is the slot your CEO will ask about first. Advertisers spent an estimated $4.2 billion on national linear prime time in the first half of 2025, up 13%, driven by sports and news.
   
   
5. Late fringe (11 p.m. to 1 a.m.): Late local news and late-night talk shows reach smaller audiences at lower rates.
   
   
6. Overnight (1 to 6 a.m.): Reruns and paid programming deliver the smallest audiences at the lowest cost.
   
   

National cable networks mostly sell rotations instead of exact times. You buy a daypart, such as weekday daytime, and the network places your spot somewhere inside it. A run-of-schedule buy lets the network air your spot anywhere across the day, usually at the lowest rate. The more precisely you specify when your spot runs, the more you pay.

 

Spot lengths

Most advertisers buy :30 spots. They add :15s to build frequency and choose :60s when a product needs more time to be explained.

 

How networks and local stations split ad inventory

National networks sell most of their commercial time to national advertisers. Broadcast networks leave some breaks for local affiliates to sell, and cable networks hand a portion of each hour to cable and satellite distributors, who sell it locally. Because of that split, a national insurance brand and your local car dealer can both buy ads during the same program.

 

How linear TV ads are delivered and measured

Advertisers send finished commercials to each network and station through trafficking, the process of telling each outlet which ad to air in which slot. Nielsen measures the audience and reports ratings, impressions, and gross rating points (GRPs). Those numbers show how many people saw an ad, not what it did for the business.

Advertisers measure business results over two timeframes. In the minutes after each airing, they match spots to website visits, app downloads, and sales to see which networks and dayparts drive response. Over the following months, they use incrementality tests and marketing mix modeling (MMM) to measure TV's long-term results, including brand growth.

 

What are the benefits of linear TV advertising?

Linear TV advertising drives sales right after an airing and keeps building demand for months afterward, with full ads on the biggest screen in the home.

 

Brand building that lasts

Linear TV keeps paying off long after a spot airs. Across 141 UK brands, TV accounted for 63% of advertising profit that arrived after the first week, and linear TV alone delivered 54.6%. Judge a linear TV campaign on the next week and the next year, and you'll see both halves of its value.

 

Full ads on the biggest screen

Viewers can't skip a linear TV spot during a live airing, and the whole household can watch it together on one screen. In the Advertising Research Foundation's 2026 study of live ad campaigns, TV consistently generated higher attention than social media, and TV screens generally drew more attention than phones, tablets, or desktops. You get a full :30 or :60 to tell your story.

 

Diversification beyond digital

Linear TV advertisers reach audiences through programming and context, which keeps you clear of the data privacy problems digital advertisers face.

 

Trust and credibility

Consumers see brands on TV as more established. Viewers associate TV ads with real investment and broadcast standards, and they read both as signs of legitimacy.

 

What are the disadvantages of linear TV advertising?

Linear TV advertising reaches fewer young adults than it once did, and it has no click path from ad to purchase.

 

Fragmented audiences

Younger viewers spend most of their ad-supported TV time on streaming. In the fourth quarter of 2025, streaming took 66.7% of ad-supported TV time among adults 18 to 49, and linear TV took 33.4%. Advertisers still reach younger viewers on linear TV through live sports, which lifted broadcast's share of ad-supported viewing in Q2 2026, and many add streaming for the rest.

 

Indirect attribution

Linear TV has no click path from ad to purchase, so you can't read its results from a click report. Advertisers combine airing-level response data with longer-term models instead, which takes more expertise than digital reporting.

 

Does linear TV still matter for advertisers?

Yes. Advertisers will spend about $41 billion on national and local linear TV in 2026, not counting political ads.

New advertisers keep arriving too. The VAB counted 354 brands that bought national TV for the first time in 2025, including streaming, spending a combined $1.07 billion.

 

How is linear TV advertising bought?

You buy linear TV on two dimensions: geography (national or local) and timing (upfront or scatter). Your choice on each determines your cost, your flexibility, and how far ahead you need to plan.

 

National vs. local linear TV advertising

National buys on networks such as HGTV, ESPN, or NBC suit brands that sell nationwide, such as ecommerce companies, insurers, and consumer goods brands.

With a local buy, you target specific markets. Nielsen divides the US into 210 Designated Market Areas (DMAs), such as Chicago or St. Louis, and advertisers buy time on local stations or local cable within them. Local TV suits regional businesses, franchises, retailers, and brands testing creative before scaling.

Many advertisers combine the two. A national brand might run a national cable schedule for broad reach, then add local spots in markets with new store openings.

 

Upfront vs. scatter

Upfront buying means committing to linear TV ad time months in advance, ahead of the fall broadcast season. Networks pitch their upcoming programming each May at the upfronts, and advertisers negotiate deals that lock in rates and placements for the year.

Scatter buying means purchasing linear TV ad time closer to air, anywhere from a few weeks to a few months before the spots run. Scatter buyers take the inventory left after upfront commitments, at whatever price networks charge at that time.

The tradeoff is price certainty against flexibility. Upfront buyers get guaranteed placements and negotiated rates, but they commit big budgets early. Scatter buyers pay prices that rise when inventory is tight and fall when it's loose, but they can start, pause, or change a campaign as results come in.

 

Working with a linear TV agency

Most brands buy linear TV through an agency. A linear TV agency plans which networks, dayparts, and markets to buy; negotiates rates; places and traffics spots; adjusts the schedule mid-flight; and reports on airings and business results.

Ask any agency you're evaluating how they define success, how often they report results, and how quickly they move budget away from underperforming networks. Ask who owns your data after the contract ends. If the answer takes more than a sentence, keep asking.

You no longer need a primetime network budget to advertise on linear TV. Measurement has improved too: advertisers can now track TV's impact from the minutes after an airing to months later.

Marketing Architects is 100% focused on TV. Annika®, our in-house media-buying AI, works alongside human media strategists to buy linear and Connected TV. With All-Inclusive TV, you pay one bill for media and we cover everything else.

 

Talk to a TV specialist

Start your first linear TV campaign with a plan built around your budget and audience. If you plan to add streaming later, read about how linear and Connected TV work together to extend reach.

Connect with our team to talk about your campaign. Or about your favorite commercial. We're always happy to talk TV.