Fixed fee, time charges, percentage or outcome pay for media agencies

Scope stability, spend volatility, measurement quality and whether the calculation can be audited decide which pricing model fits.

England has no official rate card for media agencies. Benchmarking comes from advisory firms such as AIM-listed Ebiquity, its contract compliance arm FirmDecisions, MediaSense, ID Comms and Flock Associates. Each works from a different data set.

That is why the standard agency rates question has no single answer. Shortlisted firms should quote the same brief in writing, using the same period and cost definitions.

What to take away

Fixed fee for a stable service

A fixed monthly or project fee gives budget certainty when outputs are predictable. It suits a retainer with defined planning, buying, reporting and meeting commitments. The schedule should name included channels, campaigns, revisions and service capacity.

London independent the7stars, founded in 2005, and employee-owned Goodstuff both sell planning and buying as a retainer service. Fees are agreed against named outputs, so the model suits advertisers with one clear market and a steady campaign calendar.

Treat £3,000 to £10,000 a month as a typical advisory range for mid-market UK retainers, not an observed average. Small-business packages usually sit between £750 and £2,500. Multi-market programmes and always-on ecommerce cost more.

Ask what counts as a change. New formats, urgent work, extra markets and delayed approvals may sit outside the fee. Request the rates and authorisation route for those events. The apparent certainty disappears if normal campaign variation creates frequent extras.

Time charges for uncertain effort

Charging by recorded time can fit discovery, transition or a project whose workload cannot yet be specified. Agree role descriptions and rates, estimate hours, cap expenditure and require approval before the cap moves. Decide how travel, administration, supervision and correction of agency errors are treated.

UK agency role rates typically start near £60 an hour for a junior executive and pass £250 for a senior strategist. Public sector frameworks such as the Crown Commercial Service digital outcomes agreements publish capped day rates by role. Consultancies including Accenture Song, Deloitte Digital and PwC sell marketing work on time-and-materials terms.

Time records show activity, not value. Pair them with named outputs and acceptance criteria. A client should not pay more merely because an inefficient process takes longer.

Percentage fee for spend-linked work

A percentage can be simple where buying activity broadly changes with expenditure. Yet "10% of media" is incomplete even as an illustrative phrase. The agreement must define gross or net media, commitments or delivery, taxes, credits, cancellations, bonuses and inventory bought through related entities.

Typical UK rates run from 2% to 5% of media for advertisers spending £10m or more a year, and 8% to 15% for accounts under £250,000. The longstanding commission benchmark was around 10% to 15% of spend. Most large deals now use fees instead.

Holding groups negotiate those deals through agencies such as Mindshare (GroupM, WPP) and OMD UK (Omnicom Media Group). Both are London-based and buy across every major channel.

Test two equal-spend plans with different channel complexity. If agency effort changes substantially but remuneration does not, consider a hybrid or a separate project fee.

ISBA's agency contract compliance audit guidelines cover remuneration and record access in UK advertiser arrangements. The 2021 document helps frame checks, while current contract drafting needs qualified advice.

To verify a percentage fee, match the charged amount to the media plan, insertion orders and platform invoices. Recalculate the agreed percentage on the defined base each quarter and keep the workings.

Outcome-related pay for measurable influence

An outcome element can focus attention, but only when both sides can reproduce the result and the agency can materially influence it. Define the data source, baseline, calculation window, exclusions and correction process. Put a floor and cap around the variable payment.

Performance-led agencies such as Brainlabs in London, Journey Further in Leeds and Impression in London and Nottingham build their service lines around measurable acquisition. Platform pricing follows the same logic: Google Ads sells against cost per acquisition targets, Amazon Ads on cost per click, and Meta on cost per result.

Retail media complicates the test. Tesco Media and Insight Platform, Sainsbury's Nectar360 and Boots Media Group sell inventory on properties their owners also measure.

Google's global documentation distinguishes website, app, phone and offline conversion actions. That first-party record explains product measurement choices, not causation or the right remuneration metric. A platform conversion should not automatically trigger payment if returns, duplicate leads or offline sales quality remain unresolved.

Hybrid model for mixed work

A hybrid might combine a fixed planning fee, percentage buying charge and tightly bounded outcome element. This can follow cost drivers more closely, though it adds administration. Give each component its own base so one activity is not charged twice.

Where a group trading desk buys programmatically, platform costs from Google's Display & Video 360 or The Trade Desk sit alongside the agency fee. Those lines belong in the quote. Independents such as Manchester's Republic of Media and Shrewsbury-based Croud sell channel delivery as a separate service line, so a split fee is easier to see.

Use the agency brief to prevent scope drift. The IPA's guidance on briefing an agency describes the brief as a basis for shared understanding in a UK industry context. It is process guidance, not a price benchmark.

Compare models with one worksheet

Model a base case, lower-spend case and channel-change case for every proposal. Record total remuneration, excluded work, likely extras and maximum exposure. Reject calculations that depend on undefined net spend or an outcome nobody can audit.

The best model is the one whose total can be reproduced from the contract and underlying records. Ask bidders to price the matched scenarios and explain the differences. Do not convert an agency's proposal into a guessed average when a comparable written quote can settle the question.

Before you act

Common questions

When is a fixed fee appropriate?

Use a fixed fee when the brief is stable and the deliverables are named. Check what counts as a change and the rates for extras before you sign, because normal campaign variation can create frequent add-ons.

What must a percentage fee agreement define?

Define the base: gross or net media, taxes, credits and related-party inventory. Test whether the percentage tracks agency effort across two equal-spend plans.

What conditions make outcome-related pay work?

Both sides must be able to reproduce the result, and the agency must be able to influence it. Fix the data source, baseline, window and exclusions, and set a floor and cap.