"How much should I spend on Google Ads?" is one of the most common questions I get, and it's also one of the most misunderstood. There's no universal number — a budget that's healthy for one business would be a waste of money for another. Here's how to actually think about it.
Why There's No One-Size-Fits-All Budget
Your right budget depends on three things: your average order value or deal size, your target cost-per-acquisition, and how much search volume actually exists for your keywords. A $50 product and a $5,000 service need completely different budgets to gather the same amount of useful data — the math simply doesn't scale the same way.
Minimum Budgets by Business Type
| Business Type | Realistic Starting Budget |
|---|---|
| Local service business | $500 – $1,500 / month |
| Ecommerce (small catalog) | $1,500 – $5,000 / month |
| B2B / lead generation | $2,000 – $10,000 / month |
| Ecommerce (large catalog) or competitive B2B | $10,000+ / month |
These are starting points, not rules — your actual number depends on your margins, sales cycle, and competition in your specific keywords.
How to Estimate Your Starting Budget
A simple way to reverse-engineer a starting budget: decide how many leads or sales you want per month, multiply that by what you can realistically afford to pay per lead or sale, and that's your floor. If you want 20 leads a month and can afford $75 per lead, you're looking at roughly $1,500/month as a starting point — knowing that early data collection often costs more per lead than the account will once it's optimized.
Common Budget Mistakes
- Setting a budget based on what feels affordable rather than what's needed to gather meaningful data
- Cutting budget the moment performance dips, before the account has had time to stabilize
- Spreading a small budget across too many campaigns or keywords instead of focusing it
- Not accounting for a "learning period" — new campaigns are rarely as efficient in month one as they will be by month three
When to Increase (or Decrease) Spend
Increase spend when you're consistently hitting your target cost-per-acquisition and impression share data shows you're missing out on additional volume at that same efficiency. Decrease or pause when cost-per-acquisition is trending in the wrong direction with no clear fix in sight — but give any real change at least 2-3 weeks of data before reacting, since daily fluctuations are normal.
If you want a second opinion on what your specific business should actually be budgeting, that's exactly what a free audit covers — I'll give you an honest read on your numbers, not a generic answer.