June 8, 2026
How Much Should a Small Business Spend on Google Ads?
It’s the first question most owners ask, and the one with the most misleading answers online. “Spend 7–10% of revenue” and “start with $1,000/month” are everywhere — and they’re nearly useless, because they ignore the only things that actually determine the right budget: your goals, your margins, and your math.
Start from a customer, not a number
The wrong question is “how much should I spend?” The right one is “how much is a customer worth, and how many do I want?” Work backward: what’s a customer worth to you (ideally lifetime value), what can you afford to pay to acquire one, how many do you want per month, and what’s a realistic click-to-customer conversion rate.
Multiply it out and you get a budget grounded in your economics, not a generic percentage. A business where a customer is worth $5,000 can justify a very different budget than one where a customer is worth $50 — even at the same size.
Why "minimum viable budget" matters
There’s a floor below which Google Ads can’t gather enough data to optimize. Spread $300 across five campaigns and ten keywords and no single one collects enough conversions to learn from. It’s usually better to start narrow and concentrated — fewer keywords, tightly segmented by intent, with enough budget behind them to produce real conversion data — than to spread a small budget thin.
Budget follows performance, not a spreadsheet
The biggest mistake isn’t picking the wrong starting number — it’s leaving the budget static. A well-run account rebalances toward what’s working: segments with the lowest cost per acquisition and highest conversion rate get more; the ones that aren’t pulling their weight get less or get cut.
So the honest answer to “how much should I spend?” is: enough to gather real data in your highest-intent segments, then let performance decide where it grows. A budget isn’t a fixed cost — it’s a dial you turn based on what’s converting.
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