Start from capacity, not from a percentage of revenue
The old advice to spend a fixed percentage of revenue on marketing ignores a basic question: what happens if the ads work? A plumbing company that can take twelve more jobs a month gains nothing from a campaign that generates sixty leads. It just pays for fifty-eight disappointed callers.
So we start with capacity. How many new customers can you serve well next quarter? Multiply by your average first-order value and you have the revenue ceiling the campaign is allowed to chase. Everything in the budget follows from that number.
Split spend into three buckets
| Bucket | Share | Purpose |
|---|---|---|
| Proven | 60–70% | Campaigns with a known cost per acquisition that is below your target. Scale carefully. |
| Promising | 20–30% | Formats or audiences with early signal but not enough data. Give them a fixed test window. |
| Exploratory | 5–15% | New platforms, new creative angles, new offers. Expect most of it to fail; the one that works funds next year. |
The percentages matter less than the discipline of having all three. Businesses that spend only on "proven" stagnate when the proven channel saturates. Businesses that spend only on exploration never compound.
Set the test rules before the test
Every promising or exploratory campaign gets three things written down before launch: the budget, the deadline, and the number that will decide its fate. "We will spend 1,500 over four weeks on search ads for emergency repairs; if cost per booked job is under 45 we move it to proven, otherwise we stop."
Writing it down removes the two most expensive habits in paid media: killing a campaign early because the first week looked bad, and keeping one alive for months because someone likes the creative.
Budget discipline is not about spending less. It is about knowing, in advance, what would make you spend more.
Balance paid with organic from day one
Paid ads deliver fast results, especially in the early stages of brand development, and that speed is addictive. The risk is a business whose entire pipeline switches off the day the ad account does.
Use paid search data as an SEO research tool: the queries that convert in ads are the queries worth building organic pages for. Use remarketing to capture the people your content brought in. Over 12 to 18 months, the blend should shift so that paid is amplifying a base that would exist without it.
If more than 80% of your new customers arrive through paid channels after two years of spending, the budget is working but the marketing is not. Talk to us about balancing PPC and organic reach.