The question SME owners ask most often is “How much budget do I need to start running ads?” The truth is there's no fixed number, but there are planning principles that let you start safely, without risking a large sum on trial and error.
Start with a test budget, not a full budget
SMEs just starting out should split their budget into two phases: testing and scaling. The testing phase uses a small budget to see which creatives, audiences and offers the market responds to, before committing more budget in the scaling phase. Jumping straight into a full budget without testing first is an unnecessary risk.
Formula for a minimum test budget
A simple rule: your test budget should be enough to generate at least 30–50 conversions per creative, so you have enough data to make decisions. For example, if your product sells for ฿500 and you expect a cost per sale of about ฿150, you should allow a minimum test budget of roughly ฿4,500–7,500 per creative set.
How to split your budget without taking too much risk
- Start with money you can afford to lose without hurting the business, not your entire reserve.
- Test one platform at a time instead of spreading a small budget across many channels at once.
- Give each campaign at least 3–7 days before deciding. Don't switch it off too early.
- Once you find a winning formula, increase the budget gradually by 20–30% at a time, not in big jumps.
Don't increase your budget sharply the moment you see good results. The platform's AI needs time to re-learn every time the budget changes significantly, which can make results fluctuate temporarily.
Summary
There's no fixed minimum budget for every business, but there's a principle that always works: start small, test first, then scale based on real data. This lets SMEs start advertising with confidence, without gambling a large sum on guesswork.