A performance based marketing agency ties some or all of its fee to a result rather than to hours: a lead, a booked appointment, a sale, or a share of revenue. The appeal is obvious to any owner who has paid a retainer for a year and cannot say what it bought. The catch is equally real, and it is almost never about honesty: it is about measurement. The moment your money depends on a counted event, the definition of that event, who counts it, and who can see the counting become the whole commercial relationship. This guide covers the models in use, where each one goes wrong, and what to settle before signing.
The four models sold under one name
First, pure pay-per-lead: you pay a fixed amount per qualified enquiry, and the agency carries the media cost. Second, pay-per-sale or revenue share: the agency takes a percentage of transactions it can attribute. Third, the hybrid, and by far the most common in practice, where a reduced retainer covers the base work and a bonus is paid against agreed targets. Fourth, media buying with a fee tied to spend, which is often marketed as performance based but is not: the agency earns more when you spend more, regardless of what the spend produces. Ask which of the four is on the table and get the mechanics in writing. The distinction between the third and the fourth is where most buyer disappointment starts, because both are described with the same language in the pitch.
Why the definition of a lead is the entire contract
Under pay-per-lead, every ambiguity in the definition costs you money. Does a form submission count if the phone number is fake? Does a two-minute call count if the caller wanted a job rather than a quote? Does a customer already in your database count as new? Does an enquiry outside your service area count? Write the definition down, including duration thresholds for calls, required fields for forms, geography, and a rejection window with a stated process for disputing. Then agree who holds the counting system. If the agency owns the call tracking and the form platform, they are marking their own homework, and you are dependent on their export. The workable arrangement is that leads land in your CRM, in an account you own, and both parties read the same records.
Attribution decides who gets paid for what
Revenue share and pay-per-sale deals live or die on attribution rules that must be settled up front. Decide the lookback window, whether the model is last click or something broader, how repeat customers are treated, how offline sales that started online are credited, and what happens to a customer who first found you organically and later clicked an ad. None of these questions has a single correct answer, which is precisely why they must be answered in the contract rather than argued about in month five. Google's own conversion tracking documentation is a reasonable neutral reference for how windows and models behave, and it is worth both sides reading it before agreeing terms. Also agree what happens to the tracking configuration when the relationship ends, because a measurement setup you cannot access is a hostage.
What performance pricing does to incentives
Payment shapes behaviour, and not always the way the buyer hoped. An agency paid per lead will optimise for lead count, which pushes toward cheap, broad, low-intent traffic and aggressive form design unless quality is defined and enforced. An agency paid on revenue will chase your most profitable existing segment and may starve the slower work, such as content and technical foundations, that pays off after their contract ends. An agency paid a share of spend has a reason to raise budgets. None of that makes performance pricing wrong; it means you should choose the model whose distortion you can live with and instrument against it. Home services businesses, where a call is the sale, are the natural home for these deals, and it is also where the lead definition arguments are most common, so agree the rules before volume arrives.
Questions people ask about performance based marketing agency
Will a good agency work purely on performance?
Rarely, and usually only where the economics are proven. Pure performance means the agency funds media, tooling and labour before earning anything, so they will accept it only when your conversion path, average order value and close rate are known and healthy. If an agency offers pure performance to a business with no data, ask what they know that you do not.
Is pay-per-lead cheaper than a retainer?
Not usually per unit. You are paying the agency to carry risk and float the media, and risk has a price. What pay-per-lead buys is predictability: a cost you can compare against the value of a job. Model both against your own close rate before assuming either is better value.
What should the rejection process look like?
A stated window, typically a few days, a defined reason list, evidence such as the call recording or the form record, and a maximum time for resolution. Without a rejection process, quality disputes become a monthly argument, and the party holding the data usually wins it.
How do I stop shared leads being sold to competitors?
Say so explicitly in the agreement: leads generated under this contract are exclusive to you and may not be resold or reused. Some lead-generation businesses sell the same enquiry several times, which is legitimate when disclosed and damaging when it is not. Exclusivity should also be reflected in the price.