How much should you spend on marketing?

Published 2026-09-28 · 2 min read

The short answer

Work the budget out from the goal, not from a number you feel comfortable with: how many customers you need this month, and how much you can pay to win one and still profit; multiply the two. At first, budget enough for a real test over a month or two, then adjust based on your actual cost per customer.

The basic equation

Budget = customers needed × acceptable cost to acquire one. The acceptable cost comes from your margin and how often a customer buys again.

Example

A training center earns 800 from each trainee and accepts spending 200 to win one. It wants 30 trainees a month, so the starting ad budget is about 6,000, reviewed after the first month based on the real cost.

Don’t forget what surrounds the ads

Content production: photos, video, design.
Tools and subscriptions.
Website or landing page improvements.
Response time; a good ad is wasted on a slow reply.

When to increase the budget

When cost per customer is stable and acceptable and you can serve more. Increase gradually and watch that the cost doesn’t rise sharply as you scale.

Frequently asked questions

Is there a fixed percentage of revenue for marketing?

Common percentages are just a starting point. It's more accurate to work from cost per customer and your growth goal.

My budget is very small. Should I start?

Yes, but focus it on one channel and a clear audience rather than spreading it thin.

Related service: Marketing Strategy