Introducing the Revenue Retainer: A New Way to Price Agency Work

You run lead generation for home-services clients, and you’ve heard the advice a hundred times: stop billing for hours, start charging for value. It removes your earnings cap, opens the door to scaling your agency, and pays out based on results, not tasks.

Then you sit down to write the invoice, and the advice stops exactly where you need it most. Most agency owners making the switch run into this problem:

“Everyone tells me to charge based on value, but nobody tells me what that actually looks like as a monthly invoice I can put in front of a client.”

This article aims to solve that problem. With it, you’ll be able to explain what a Revenue Retainer looks like for your business and decide if you should offer one this year.

“Charge for Value” Has Never Told You What to Put on the Invoice

The advice to price on value is incomplete: it tells you to stop billing for hours, but stops short of showing you what that looks like in practice.

It's not that marketers don't know about the model. The industry even names it in standard agency-pricing guides: “value-based recurring pricing,” where clients pay a share of the value delivered every month. The problem, though, is “difficulty quantifying exact ‘value’ each month” (RivalFlow). How are you supposed to figure out each month's invoice when value earned is variable?

The numbers show it's a real issue too. In Consulting Success’s survey, 39% of consultants said they’d never tried value-based pricing because they don’t know how. They believe it works. They just don’t know how to build the number.

That’s the problem this article solves: what number goes on the invoice, and how you build it. (WhatConverts has also covered another angle on pricing to the value you show.)

The Problem with Hourly Pricing

Let's look at the two most common pricing models for agencies, starting with the most common: hourly.

Hourly billing has a ceiling you can calculate: revenue equals your rate times the hours you can sell. ConsultFees runs the math. At $250 an hour and 25 billable hours a week, a consultant tops out near $325,000 a year at peak capacity.

The only levers left are hiring or raising rates, and both move the ceiling instead of removing it. The chart below shows the shape. Revenue climbs with hours, then goes flat (there's only so many hours in a week). But the value you create keeps rising past what you can bill.

Then it gets worse, because the model punishes the skill it should reward, a problem ConsultFees calls the efficiency penalty. A junior consultant needs 30 hours for a job and bills $6,000. A senior does the same job in 10 hours and bills $2,000. Ten years of skill earned $4,000 less.

Pricing consultant Jonathan Stark argues hourly billing works against both sides’ financial incentives and breaks trust. The billable hour, he says, was never built to price professional services. It’s borrowed from factory-floor cost accounting.

Hourly is clear. A client always gets it. But hourly doesn't connect your pay with your results, just the time you spent to earn them. That’s what billing for tasks costs an agency over time.

The Problem with Percentage of Ad Spend Pricing

What about pricing based on percentage of ad spend? This model has it's downfalls too.

A percentage of ad spend ties your fee to the client’s budget. Spend goes up, you earn more. Spend goes down, you earn less. Results never enter the math, so your incentive and your client’s point in opposite directions from the day you sign.

In one line, Credo explains both sides: the client is “incentivized to… spend as little as possible,” while the agency’s goal is “to get your clients to spend more.” Since incentives are going opposite directions, you're pulling one way while the client is pulling another.

Let's put it in dollars. 15% of a $50,000 budget is $7,500 a month. But if you optimize the account so the client hits the same result on $35,000, and the fee drops to $5,250 (AlwaysOnward). Your best work cuts your own pay.

Is the model always wrong? No, Credo says it holds up under tight guardrails. The client gives written approval before any spend increase, the agency eats overspend, and reporting ties spend to profit. But do that and those guardrails just turn the model into a results-based fee, which is the tell.

It’s no fringe habit, either. WordStream’s 2019 survey found 34% of agencies priced this way, most charging 10% to 20%. Home services was among their top three client verticals. The table below sets all three models side by side.

To make matters more complicated for agencies, ad costs keep climbing too. See why that pressure will force every agency to prove ROI outright, or lose the client.

Charging a Percentage of the Value You Create Is a Proven Model, Just Not in Agencies Yet

Before you introduce a new number to a client, you need to know it isn’t an experiment. Pegging a fee to a share of some number is one of the oldest plays in professional services. A revenue-share retainer applies that same old play in a new setting.

Whole industries already price on a percentage of the number that matters

Look at four you know: franchise royalties are a share of the franchisee’s gross revenue, calculated before profit or expenses. They’re collected on an ongoing basis, for the life of the deal. That makes them the closest structural twin to a revenue-share retainer. The franchisor wins when the franchisee grows. Here’s how franchise royalties are calculated on gross revenue.

Recruiting does something similar. Placement fees run as a cut of first-year salary, split across milestones. Top Echelon’s worked example on a $75,000 role at a 25% fee: 5% up front, 10% at shortlist, 10% at hire. One number, paid in stages.

Real-estate commissions are a share of sale price, paid only on a close, a model every reader already understands. Consulting success fees run 10% to 20% of the revenue growth created, the higher end for hard, higher-risk work. Four unrelated industries, one shared idea. The tiles below line them up.

Fixed, forecast-based pricing isn’t new either, and neither is a slow rollout

Setting a fixed number ahead of time has its own history. Ron Baker of the VeraSage Institute began pricing accounting work fixed in advance in 1989. He sold certainty, the way a fixed-rate mortgage beats a variable one: you know what’s coming. He cites AICPA data showing 30% to 60% of accounting firms now value-price, “way up from 15 years ago.”

Marketing shows the same drift on the advertiser side: the ANA found 82% of surveyed marketers now use fee-based, non-hourly compensation, up from 68% in 2016. That shift runs strongest among the largest advertisers, but it still points the whole market the same way.

Be honest about the pace, though. Law is the most recorded case of a whole field moving off the billable hour. The move is real, but slow. Alternative fee arrangements climbed to roughly 20% of firm revenue after 2008, then plateaued around 2014, even with clients asking for more.

The decades-long shift away from the billable hour proves the direction is right and the clock is long. Adopting a better model is a multi-year move, and there’s no switch to flip.

The Revenue Retainer: One Monthly Number, Built From the Revenue You Can Forecast

A Revenue Retainer is a monthly agency fee built from one number. Forecast the revenue your marketing will drive over the next twelve months, agree on a share of it, and divide by twelve. The fee grows only when the revenue you create grows; ad budgets and billable hours don’t count.

That’s the answer to the blank invoice from the top of this piece. Here’s how it works, step by step.

Step 1 is the baseline: the revenue your marketing can be shown to have driven over the trailing twelve months. Not leads, not spend, revenue. Step 2 is the forecast: project that baseline forward twelve months, folding in growth and seasonality.

Step 3 is the percentage: agree on a share of that forecast, a call big enough to hold loose for now. Step 4 is the division: split the yearly figure into twelve equal payments for one predictable monthly fee. The certainty is the point, the fixed-rate-mortgage idea from before applied to a retainer.

Here’s why it beats both earlier models. The fee tracks what you produce for the client. Pay it as one ongoing share, like a franchise royalty, or split it across milestones, like a recruiting fee. Both shapes have precedent.

The baseline is the number most agencies can’t produce yet

Every step after the first is math; Step 1 is the hard one. To set that baseline, you have to trace which revenue your marketing drove. Do it lead by lead and call by call, back to the campaign that produced it. Most agencies can’t, which is the real reason value-based pricing never happens for them.

The baseline a Revenue Retainer is built on: the actual revenue your leads can be shown to have driven. This is the number Step 1 needs.

This is where lead tracking earns its place in the model. WhatConverts ties each lead and call to the revenue it became. The baseline becomes a figure you can defend. No more hoping an estimate holds up. Pull that piece out and the model has no number to stand on. If you want to prove which revenue your marketing actually drove, that’s step zero.

What a Revenue Retainer Looks Like on a Real Invoice

Here’s what it looks like with real numbers.

Say you run marketing for a roofing client, with a trailing-twelve-month, marketing-attributed baseline of $2.4 million. Forecast a 15% rise and you’re near $2.76 million. Agree on a share of that forecast (the exact figure stays loose; “what share” is its own call), then divide by twelve. What lands on the invoice is a single line: “Marketing, monthly fee: $X,XXX.”

Set that line beside the alternatives. An hourly bill that changes every month. Or a cut of a $50,000 budget that pays you to spend more. One clean number beats both.

Is home-services revenue-share hypothetical? Not in one vertical. A 2026 guide shows commercial HVAC agencies charging 8% to 15% of closed contract value. Attribution windows run 180 to 365 days, with clawbacks if a customer cancels early (Sure Shot Systems). Treat that as the single best vertical-specific data point, HVAC-only. Don’t carry 8% to 15% over to roofing or plumbing without noting it started in HVAC.

Producing that invoice takes more than a spreadsheet guess: it means forecasting from a real baseline, then reporting the fee against the revenue your marketing drove. That’s the job revenue reporting does.

Deciding Whether a Revenue Retainer Fits Your Agency

The model is right for some agencies and wrong for others. Still, this part is honest about both.

You’re ready to offer a Revenue Retainer when four things are true. A trustworthy attributed-revenue baseline. Enough history to forecast from. A client willing to share revenue outcomes. And attribution solid enough to stake a fee on. The checklist below lets you choose in about ten seconds.

You’re not ready when any of those is missing. No attribution, no meaningful history, or a client who won’t open their books means not yet. The HVAC guide sets the same bar bluntly: pure revenue-share needs “a proven funnel with documented conversion rates,” plus real history, at least six months of leads and closes.

Skip that, and you’re either pricing the risk too low or gambling on volume over quality. Not yet is a real answer, and reaching it is the point of deciding at all. So, which are you?

One thread runs through the whole “ready” column: it all rests on attribution; you can’t price on revenue you can’t trace, which is why value-based marketing built for agencies starts with tracking.

Say you clear the bar. Three calls still sit in front of you. How to move an existing client to this without a hard cutover. What to charge. How to defend your forecast the way an appraiser defends a valuation. Each is its own call, worth making with care.

See how Repeat Digital untangled its own attribution mess and scaled one client to $1M — proof the baseline this model needs is buildable.

You Finally Have a Number to Put on the Invoice

You started with advice you couldn’t act on: charge for value, no invoice attached; now you have the method the advice always skipped. Baseline the revenue your marketing drove, forecast it forward, agree on a share, divide by twelve. One visible number. Tied to the outcome you produce, independent of the hours you burn or the budget your client sets.

That’s the shift. You can put a single figure in front of a client and show the revenue underneath it; offer it this quarter or fix your attribution first. Either way, you’re deciding from the number now, not the slogan.

Ready to build a Revenue Retainer number from your own client’s data instead of the composite example?