Marketing budget
and KPIs

How to set a marketing budget and KPIs that mean something

Most small businesses set a marketing budget in one of two ways: whatever feels affordable, or whatever a vendor proposes. Neither tells you whether the money is working. A marketing budget and KPIs built backward from your own numbers do: you know what you can spend, what you should get for it, and when to change course.

The method is simple arithmetic. You don't need a finance degree, only a few honest numbers from your business.

Step one: what a customer is worth

Start with gross profit per customer, not revenue. A kitchen remodel brings a large invoice, but only part of it is profit after materials and labor. A dental patient may bring modest profit per visit but return twice a year for many years. A coffee subscription brings small amounts every month. My article on customer lifetime value shows how to estimate it with rough data.

From that value, you decide the maximum you're willing to pay to acquire one customer. Many owners are surprised by how high that ceiling can be when they count repeat business, and how low it is for one-off, thin-margin sales.

Step two: how many customers you need

Next, the volume. If your goal is a certain revenue increase this year, how many new customers does that take per month? And how many leads, given your current close rate? If you close one in four inquiries and need ten new customers a month, you need about forty leads. Multiply by your target cost per lead and you have a first budget figure.

Step three: splitting the money

The total is then divided between channels based on how much each customer is likely to cost there and how fast each channel works. Google Ads usually delivers quickly but costs more per lead in competitive US niches like legal, home services and healthcare. SEO and Google Maps cost less per lead over time but take months to build. Email to past customers is cheapest of all. A typical split leans on fast channels at the start and shifts toward slower, cheaper ones as they mature.

Seasonality matters too. A landscaper, a tax preparer and a gift shop each have months when every dollar works harder, and the budget should follow those months rather than a flat monthly figure.

The KPIs I actually use

Clicks, impressions and followers can help explain a change, but they are not targets. A good monthly report puts these five numbers on one page.

Reviewing and adjusting

Once a month, look at the five numbers against targets. If cost per customer is well below the ceiling, that channel can take more budget. If it's above for two or three months, cut it back or fix the funnel behind it. Once a quarter, revisit the targets themselves. This is also where measurement quality matters: without call and form tracking, the numbers are guesses, which is why analytics setup comes before any serious spending.

Price

Budget and KPIs are part of the $1,900 marketing strategy. The plan includes the customer value calculation, cost ceiling, monthly budget per channel and KPI targets. If you already have numbers and want a second opinion, a $65 consultation is often enough.