Results based SEO is a promise, not a method, and the promise takes at least three different shapes. Some providers mean pay per ranking, where you are billed when a keyword reaches an agreed position. Some mean pay per lead, where you buy enquiries at a fixed price and the provider absorbs the risk of producing them. A few mean a share of revenue attributed to organic search. Each arrangement changes the incentive in a different direction, and each fails in a different way. The reason to understand the difference before signing is simple: in every version, the definition of the result decides who wins the argument in month six, and the definition is written by whoever cares more at the start.
The three models and what each one rewards
Ranking based deals reward whatever is cheapest to move, which means long specific phrases nobody searches. A provider paid on positions has no reason to prefer a query that produces customers over one that produces a screenshot, so unless the tracked set is fixed in advance and chosen by you, the incentive quietly runs against you. Lead based deals are cleaner because a lead is closer to a business outcome, but they push the argument onto lead quality: what counts, whether a wrong number counts, whether a form from outside your service area counts. Revenue share is the most aligned and the rarest, because it requires the provider to trust your reporting and requires you to open your books. Most disputes in all three come down to attribution, not effort, so decide early which model you can actually administer.
Where performance pricing goes wrong
The structural problem is that the provider carries risk it cannot fully control, and risk that cannot be controlled gets managed by shortcuts. Google's spam policies name link schemes, scaled content abuse and site reputation abuse as violations, and these are precisely the tactics that appear when someone needs a position by a deadline to get paid. A penalty arrives after the invoices have cleared and lands on your domain, not theirs. The second failure is scope starvation: a provider paid only on outcomes will not spend hours on technical debt, internal linking or the unglamorous work that compounds, because none of it converts into a billable event this month. The third is the exit, where a lead based provider who owns the landing pages or the phone numbers can switch off the supply the day you leave.
What a defensible results contract looks like
Write four things down before anyone starts. First, the tracked set, chosen by you from queries with commercial intent, fixed at the outset and changeable only by mutual agreement in writing. Second, the definition of a qualified result, including what disqualifies one, since a spam form and a genuine enquiry must not be worth the same. Third, the methods clause: a plain statement that the provider will not buy links, publish scaled generated content or use any technique contrary to Google's published spam policies, with termination attached. Fourth, ownership: analytics, Search Console, phone numbers, landing pages and all content in your name, so leaving costs you a notice period rather than your entire lead flow. A provider who accepts all four is worth working with on almost any pricing model.
The measurement plumbing you need first
None of the above is enforceable without instrumentation you control. Create the analytics and Search Console properties in your own account and grant access outward. Use call tracking numbers you own, in your account, so the numbers do not disappear with the provider. Agree the attribution window and the model in advance, because the difference between last click and a longer window is the difference between two invoices. Where your buying cycle is long, insist on cohort reporting that follows enquiries from a given month through to closed business, even though it reports late. It is the same discipline the better account based marketing companies insist on before a campaign starts, because the target list is small and the deals are large, and it applies here for the same reason: without agreed plumbing, results based pricing is just an argument with a payment schedule attached.
Questions people ask about results based seo
Is pay per lead better than a retainer?
It shifts risk to the provider, which sounds attractive, but you pay a premium for that and you give up control of what gets built. A retainer builds assets you keep. Many buyers end up with a hybrid: a modest retainer for the compounding work plus a performance element on defined outcomes.
What counts as a qualified lead?
Whatever you define in writing before the first month. Most workable definitions require a real contact detail, a request within your service area, and a service you actually offer, with a stated exclusion for duplicates, spam and existing customers. Ambiguity here causes more terminated contracts than performance ever does.
How do I know the provider is not using risky tactics?
Ask for a monthly list of every link acquired and every page published, and read a sample. Google's spam policies are public, so a methods clause referencing them gives you a clean termination right if the log shows purchased links or mass generated pages.
Can a provider guarantee a position?
No, and Google's guidance on hiring a search provider treats guaranteed rankings as a warning sign because nobody outside Google controls the ranking system. A guarantee attached to something the provider does control, such as delivery of agreed work on schedule, is reasonable and worth asking for.