A rate card is the price list a media owner publishes for its advertising inventory. It sets out what each format costs, in which unit that cost is expressed, and under what conditions the price applies. The published figure is a ceiling rather than a market price: the most a buyer should expect to pay, comparable to a hotel's rack rate, with volume, timing and relationship all pushing the transacted number below it.

The document exists because advertising has no shelf price. A thousand impressions on a home page and a thousand on an archived article are not the same product, and neither side can price them from scratch on every call. The rate card fixes a reference point, defines the units both parties argue in, and converts an inventory of unequal placements into a finite list of sellable things.

What sits on the card

The first decision is the unit of sale. Google's Ad Manager interface for negotiated campaigns encodes four: CPM, or cost per mille, the price of a thousand impressions; CPD, cost per day; vCPM, priced against Active View viewable impressions rather than served ones; and CPM in-target, which charges only for impressions delivered to a specified demographic. Television and audio add cost per point, the price of one gross rating point against a named demographic, and video adds cost per completed view. Sponsorships are sold flat, at a fixed sum for a fixed period regardless of volume.

Each unit is then modified by the dimensions a seller charges for: format and size, position on the page or in the break, daypart, geography, audience guarantee, share of voice. Ad servers built for direct sales model this as a base rate plus premiums, with a product template carrying the standard price and adjustments layered on for the targeting a buyer requests. Google's publisher API exposed that structure directly, with separate services for rate cards, base rates and premium rates alongside the product catalogue. Its reference documentation lists all four in version 201902 and none of them in version 202505, while the proposal services used to negotiate deals remain.

Rates are only part of the document. Materials deadlines, cancellation windows, preemptibility, makegood policy, minimum spend and payment terms carry weight equal to the numbers. A preemptible spot at a low rate and a fixed-position spot at a high one are different products even when the seconds match.

From card rate to net

Almost nobody pays the card. Agency commission, historically fifteen per cent of gross billings, came off it, and volume rebates, seasonal discounts and early-commitment terms reduce it further. The gap is structural, which is why sellers guard the discount schedule far more closely than the card itself.

Opacity about that gap has generated regulation and disputes. France's Loi Sapin outlawed media broking in 1993 and required buying margins to be disclosed, a rule traced through the history of media planning. The Association of National Advertisers reached the same problem from another angle three decades later, describing how principal media lets an agency buy inventory with its own funds and resell it without revealing the purchase price. Where the purchase price is invisible, the card rate is the only public number, and it stops describing anything.

Standard Rate and Data Service

The rate card became an industry artefact rather than a private document in 1919, when Walter Botthof and Alvin Beirnes founded a company to publish a comprehensive press rate sheet issued quarterly to American advertisers. The brand was SRDQ, Standard Rates and Data, Quarterly; the quarterly became a monthly, and the company became SRDS. According to the Library of Congress, the service grew to cover newspapers, magazines, billboards, radio and television, printing rates alongside circulation data so buyers could compare media without contacting each seller. SRDS stopped publishing on paper in 2014, covers more than 125,000 media brands by subscription, and was bought from Kantar Media in 2020 by Emmanuel Debuyck of Adwanted Group. What it institutionalised was not the price but the comparison.

The card as a measurement unit

Rate cards have a second life as the denominator in competitive intelligence. Nielsen Ad Intel monitors gross advertising expenditure across major media at published rate card values, and states that discounts are available from some media owners but that negotiated rates are not disclosed. The resulting figures are large and consistently caveated. Australian insurance advertising reached A$504.4m between April 2025 and March 2026, up from A$453.7m. Retirement-sector advertising grew 10.4% to A$53.6m in the year to June 2026. In New Zealand, retail led all categories at NZ$675.4m across calendar 2025. Each is a rate card total rather than a cash total, a distinction that matters when the series sits beside IAB revenue data, which counts money media owners actually booked.

Transacted prices have to be bought separately. Guideline extended its SQADCosts Local product into connected television, podcasts and digital display, reporting Average, Low and High price points monthly for each publisher in its coverage set, on the argument that national benchmarks say little about what a single metro buy clears at.

Where the card lost its force

Programmatic trading replaced the published price with a discovered one. In an open auction the seller quotes no rate; it sets a floor and lets demand decide, which makes the floor the functional rate card of the exchange. Google introduced unified pricing rules in a 2019 beta capped at 100 rules per network, a regime that lasted until December 2025, when Google removed them under antitrust pressure and restored buyer-specific floors.

Once most impressions clear at auction, the card describes the exception. The explainer on remnant inventory puts it sharply: the category assumes a rate card as the reference price and an auction as the discount, but when four fifths of a site's impressions clear programmatically, the auction is the price. DataBeat data for April 2026 put average mobile CPMs at $1.44 and desktop at $1.45 despite 33.9% annual growth, an order of magnitude below guaranteed video rates.

Fixed prices migrated rather than disappeared. Programmatic guaranteed reproduces the insertion order inside automated systems, with volume and price agreed in advance, and Channel 4's move to five demand-side platforms showed broadcasters favouring that route to keep control of CPMs.

American broadcasting is the one market where a published rate carries statutory consequences. Section 315(b) of the Communications Act requires stations and cable operators to charge legally qualified candidates no more than the lowest unit charge for the same class and amount of time during the 45 days before a primary and the 60 days before a general election. The benchmark is the best price offered to the station's most favoured commercial advertiser for comparable time, and candidates receive volume discounts without buying the volume that earned them.

The obligation reaches past the headline rate. According to Federal Communications Commission guidance issued in March 2026, practices that enhance the value of a commercial schedule, including bonus spots, makegoods and favourable preemption terms, must be disclosed and offered on equal terms. Here the card is not an opening position; it is evidence.

The machine-readable card

Agentic buying has produced the first genuinely structured rate cards. The Ad Context Protocol, an open specification for software agents transacting media, requires sellers to declare a pricing options array on each product, each entry carrying an identifier, a pricing model, a currency and a rate. In the specification's own example, a connected television product offers the same inventory three ways: $55.00 CPM, $0.22 per completed view, or $300.00 per rating point against men aged 18 to 49 with a fifty-point minimum, each carrying a $15,000 floor.

Two design choices matter. Products flagged as non-fixed replace the rate with price guidance, publishing a floor and clearing-price percentiles instead of a number, which is a rate card for an auction. Each product also declares a delivery measurement provider the buyer accepts as the source of truth, because a price per completed view means nothing without an agreed definition of completion.

The failure mode arrived quickly. IAB Tech Lab shipped version 2.3 of its Agentic Advertising Management Protocols on July 30, 2026 with a pricing provenance field intended to stop buying agents fabricating CPM figures when real market data is missing, a problem it described as CPM hallucination. An invented price is indistinguishable from a sourced one until someone traces it.

Disambiguation

Floor price. A floor is the minimum a seller will accept in an auction; a rate card is the price a seller asks in a negotiation. A floor is enforced by software, a card by a salesperson.

Media kit. The kit is the marketing document carrying audience figures, format specifications and case studies. The rate card is the pricing page inside it, frequently withheld from the public version.

CPM benchmark. A benchmark reports what inventory actually cleared at, compiled from transactions. A rate card reports what a seller asks. Nielsen's category totals measure the second and are routinely mistaken for the first.

Agency rate card. In services procurement the phrase means a schedule of hourly or daily labour rates by seniority. It prices people rather than inventory.

Recent developments

Two directions are visible. Sell-side pricing control has been partially restored, with buyer-specific floors back in Google Ad Manager since December 2025 and the unified pricing rule report dimensions deprecated in January 2026. Fixed-price selling is meanwhile being rebuilt for machines: DataBeat found agentic buyers clearing at $6.13 CPM against $6.95 for conventional demand while entering 86% fewer auctions in May 2026, a pattern closer to a catalogue being read than to real-time bidding.

Data has acquired cards of its own. The Trade Desk's integration of Adsquare into Audience Unlimited prices third-party data at 3.3% or 4.4% of impression costs in Control Mode, a published tariff for a category previously quoted deal by deal. A century after SRDS began collecting them, rate cards are being written in JSON.

Timeline

  • 1919: Walter Botthof and Alvin Beirnes found SRDQ, Standard Rates and Data, Quarterly, publishing a comprehensive press rate sheet for US advertisers
  • 1930s to 1950s: SRDS adds radio, television and business publication volumes, becoming the standard reference for media rates
  • 1993: France's Loi Sapin outlaws media broking and requires disclosure of buying margins
  • 2014: SRDS ceases print publication and moves to subscription database access
  • 2019: Google Ad Manager replaces legacy floor rules with unified pricing rules, capped at 100 per network
  • 2020: Emmanuel Debuyck of Adwanted Group acquires SRDS from Kantar Media
  • October 2025: The Ad Context Protocol is published, defining machine-readable product pricing options
  • December 17, 2025: Google removes unified pricing rules from Ad Manager, restoring buyer-specific floors
  • January 12, 2026: Google deprecates the unified pricing rule report dimensions, with removal after January 30, 2026
  • March 2026: The FCC Media Bureau issues guidance reminding broadcasters of lowest unit charge obligations
  • May 1, 2026: Guideline extends SQADCosts Local price benchmarks to connected television, podcasts and digital display
  • July 30, 2026: IAB Tech Lab releases AAMP 2.3, adding a pricing provenance field to prevent fabricated CPMs

Summary

Who. Media owners, ad sales teams and retail media networks publish rate cards; agencies, media buyers and procurement teams negotiate against them. SRDS aggregates them, Nielsen measures markets with them, the FCC regulates them in US political broadcasting, and IAB Tech Lab and the Ad Context Protocol are now encoding them for software agents.

What. A published schedule of advertising prices by format, placement, daypart and audience, expressed in a defined unit such as CPM, CPD, vCPM, cost per point, cost per completed view or a flat sponsorship fee, and accompanied by terms covering minimum spend, deadlines, cancellation and makegoods. The card is a ceiling, not a clearing price.

When. Rate cards predate broadcasting; they became a comparable industry dataset with the founding of SRDS in 1919, lost primacy in digital display as auctions spread after 2009, and returned as structured data in the agentic protocols published from 2025.

Where. In print, broadcast, out-of-home, podcasting and retail media, where direct sales still dominate; inside ad servers as base rates and premiums attached to sellable products; and in the JSON pricing options that publisher agents now expose to buying agents.

Why. Advertising inventory has no natural unit price, so a reference number is needed to start a negotiation, to compare sellers, to measure category spend and, in one regulated case, to guarantee political candidates access to airtime. The persistent tension is that the reference number is public and the transacted number is not.