Agency retainer pricing: why yours is probably wrong, and how to fix it.

Ask an agency owner how their biggest retainer was priced and the honest answer is usually a memory. Someone estimated the hours, added a bit for safety, and rounded to a number that felt sellable. That was two years ago. Salaries have risen twice since, the scope has grown every quarter, and the price has not moved once. This article is about why that happens to almost every agency, and the maths that fixes it.

Retainers are the best revenue an agency has. A retainer is simply a fixed monthly fee for an agreed, ongoing scope of work, and that predictability is why most agencies build their model around them. But predictable revenue is also easy to neglect. A project gets scoped, priced and reconciled every single time it is sold. A retainer gets priced once, often years ago, and then renews itself quietly in the background while everything underneath it changes.

The damage shows up at the bottom of the accounts long before anyone connects it to pricing. The team feels stretched, utilisation, the share of the team's time spent on client work, looks perfectly healthy, revenue is stable, and yet the margin keeps thinning. When we dig into an agency's numbers, mispriced retainers are the most common single cause. Not one catastrophic deal. A portfolio of fees that were roughly right when they were set and are quietly wrong now.

The guess that became the business model

Most retainers start life as cost-plus pricing. Cost-plus means estimating what the work will cost you to deliver, then adding a markup on top. In theory that protects your profit. In practice it fails twice. The estimate is usually optimistic, because it is made during a sale by someone who wants the sale to happen. And the markup is applied to that optimistic guess, so every hour the estimate missed comes straight out of your margin rather than the client's budget.

There is a deeper flaw too: cost-plus caps your price at your own efficiency. The better and faster your team gets, the less the work costs, and the less cost-plus logic says you should charge. You are penalised for improving. Meanwhile the value to the client, the leads, the rankings, the pipeline, may be compounding every quarter, and none of it is reflected in the fee.

The other common origin is the legacy rate card. Ask where the day rate came from and the trail usually ends at a competitor's website in 2019, or a rate the first big client was willing to pay. Rates inherited like this were never built from your actual costs, so there is no mechanism telling you when they stop covering them. The number feels like a fact because it is old. It is not a fact. It is a decision that nobody has re-made.

The industry data suggests this is not a niche failure. BenchPress, The Wow Company's long-running survey of UK independent agencies, found that average gross profit for agencies turning over £1m or more fell to 39% in 2024, the lowest figure on record, against a recommended target of at least 50%, and fewer than a quarter of agencies hit that benchmark. Gross profit is what remains of revenue after the direct cost of delivering the work, so a number that low says the industry's core problem is not overheads. It is the gap between what the work costs and what it was sold for.

A flat fee is a price cut on a schedule

Even a retainer that was priced well on day one decays, because your delivery cost is mostly salaries and salaries rise every year. UK agencies also absorbed a structural jump in April 2025, when employer National Insurance rose to 15% and the threshold fell to £5,000, adding close to £1,000 a year to the cost of employing someone on £40,000 before any pay rise at all. Software subscriptions creep upwards. Freelancer rates creep upwards. A retainer that stays flat while all of that moves is a price reduction you are granting the client every year, without either of you ever discussing it.

The erosion is gentle enough that nobody flags it. Five points of margin a year never feels like a crisis in any single month. Across a three-year client relationship it is the difference between an account that funds the agency and an account the agency subsidises. And because your longest-standing clients are usually your biggest, the oldest prices tend to sit on the largest slices of revenue. The accounts you are proudest of are often the ones bleeding the most.

Scope creep is a pricing problem, not a client problem

Scope creep is the steady expansion of what a client receives without any change to what they pay. It rarely arrives as a demand. It arrives as a favour, a quick extra, one more thing added to the monthly call, each one individually too small to reprice. Ignition's 2025 survey of 273 agency leaders put numbers on the habit: 57% of agencies said they lose between $1,000 and $5,000 every month to unbilled work, another 30% lose more than $5,000 a month, and only 1% said they manage to bill for all of it. In the same research, 78% said they rarely or never charge for work outside the agreed scope.

Run that through a typical retainer and the damage stops being abstract. Take a £6,000 monthly fee built to carry £2,400 of delivery cost, a 60% margin. Ten unbilled extra hours a month at a loaded cost of £50 an hour adds £500 of cost and drops the margin to 52%. Twenty hours takes it to 43%. Nothing about the relationship looks different from the outside. The team is simply doing a day a week of free work, permanently, and the management accounts are the only place it shows.

“An unbilled favour, repeated every month, is not generosity. It is a price change that nobody signed.”

What better-priced agencies do differently

The pricing model itself moves the numbers. Promethean Research, which benchmarks the North American digital agency market, reports average net margins of around 18% for agencies using value-based pricing, against roughly 16% for retainer-led firms, 14% for project pricing and 13% for hourly billing. Net margin is the profit left after every cost in the business, so a five-point spread between hourly and value-based is enormous: on £1m of revenue it is £50,000 a year for doing the same work under a different agreement. Value-based pricing means setting the fee from the worth of the outcome to the client rather than the cost of producing it.

Adoption is still low. In SoDA and Productive's agency survey, value-based fees accounted for only around a tenth of agency revenue, with projects and retainers carrying most of the rest. That is partly because pure value pricing is genuinely hard: it needs a measurable outcome, a client willing to share their data, and nerve. But you do not have to be purely value-priced to benefit. You need value logic on the way up, to set the ceiling, and cost logic underneath, to defend the floor. Most agencies have neither. They have a guess.

How to build a retainer price that holds

Start with the floor, which means knowing your loaded cost. Loaded cost is what an hour of a person's time actually costs the business: salary plus employer National Insurance, pension and a fair share of the software and overheads that support them, divided by the hours they realistically spend on client work. That last part is where most people go wrong. A £40,000 salary looks like £19 an hour spread across a full working year. Load it to roughly £48,000 and divide by 1,000 genuinely productive hours, once holidays, training, admin and internal meetings come out, and the true figure is £48 an hour. Two and a half times the naive number, and the reason so many retainers that look profitable are not.

Notice how the price line is calculated. A 60% delivery margin means delivery cost should be 40% of the fee, so you divide £2,992 by 0.4 and get £7,480. You do not add 60% on top of cost. Adding 60% would give £4,787, which is only a 37.5% margin, and that mix-up is exactly how agencies come to believe they price at 60% while their accounts insist otherwise. Delivery margin, often called gross margin, is the share of the fee left after the direct cost of doing the work, and it has to fund every overhead, every hire and every pound of profit the business will ever make.

Then define the scope like you mean it. Named deliverables with quantities, not themes: four articles, one technical audit, one reporting call. Write down what is excluded as clearly as what is included, and attach a rate to out-of-scope work so that the change conversation becomes administrative rather than awkward. Scope that lives in a sales deck is a hope. Scope that lives in the agreement is a boundary.

Repricing the clients you already have

New pricing is easy to apply to new clients. The money is in the existing base, and that is where owners freeze, because the fear of losing a client feels bigger than the certainty of undercharging one. Two facts help. First, the maths of a rise: at a 60% delivery margin, a 10% increase across the base means you could lose one client in ten and still bank more gross profit than before, with less work to deliver. Second, most well-handled increases stick. Clients who are seeing results rarely leave over a reasoned adjustment, and a client who will only stay at a loss-making price is not really a client. They are a cost with a logo.

Time the conversation to a natural seam: renewal, the annual review your contract now contains, or a visible step-up in scope or team seniority. Give sixty to ninety days of notice. Lead with what has changed, the results delivered, and the scope as it stands today set against the scope that was originally signed, because most clients genuinely have not noticed how far it has grown. Then present the new price alongside a real alternative, such as holding the current fee with a trimmed scope. An increase with options reads as management. An increase without them reads as an ultimatum.

For accounts that are badly underwater, price the work from scratch as if the client walked in today, compare that with what you are actually charging, and decide deliberately: reprice, reshape or retire. Keeping a loss-making retainer for the sake of the revenue line is buying turnover with your own margin, and it is the most expensive revenue you will ever own.

Anchoring and tiering

Anchoring is the bias that makes the first number in a negotiation the reference point for every number after it. If the only figure a client ever sees is your single quote, the anchor is whatever budget they walked in with, and you are negotiating against a number you cannot see. Presenting three tiers moves the comparison inside your own pricing. The question stops being 'is £7,500 expensive' and becomes 'which of these is right for us', which is a far better question to be asked.

Build the tiers deliberately. The middle tier is the one you expect to sell: full core scope, priced at your target margin using the loaded-cost method above. The top tier is a genuine premium option, more senior time, wider scope, faster turnaround, priced with the same discipline, and it earns its keep even when nobody buys it, because it makes the middle look reasonable. The bottom tier must be a genuinely smaller scope at the same margin, never the same scope discounted. If your cheapest option loses money, tiering has simply industrialised the original mistake.