How long until a new ad agency shows results?
Expect a ramp: weeks 1 to 2 for access, audit, and creative briefing; weeks 3 to 6 to ship and read the first testing batch; and 2 to 3 months before compounding shows up as steadier CPA and scaled winners. Anyone promising week-one transformation is selling the pitch, not the work.
The three phases of a realistic ramp
Access and audit (weeks 1 to 2) is not wasted time. A proper audit surfaces the existing creative library, spend history, audience structure, and measurement setup. The briefing that comes out of it determines whether the first creative batch tests the right hypotheses or repeats prior mistakes.
Why the 90-day number is not arbitrary
Platform algorithms need signal accumulation before they distribute efficiently. A new creative batch needs two to four weeks of spend before read-through is reliable. Then the winning concepts need budget to scale, and scaled winners need iteration. Three months is the minimum for that loop to complete once.
What to watch in the interim
Before 90 days, judge the agency on process quality, not outcome metrics. Are creative briefs specific and hypothesis-driven? Is the testing structure clean? Are learnings documented and carried forward? Those are the leading indicators of whether the outcome metrics will follow.
Related questions
What if results do not improve after 90 days?
Run a structured diagnosis first: creative quality, audience targeting, landing page conversion, and measurement accuracy. A good agency surfaces this themselves rather than waiting for the client to ask.
Should I expect results to dip during the transition?
A short dip is possible if the prior setup had artificially low CPA from narrow retargeting or misattributed conversions. A clean new setup often looks worse before the true baseline becomes visible.
Want this run on your account?
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