How Much Should a Small Business Spend on Google Ads in Canada?
Start with the economics of one customer
Before choosing a media budget, estimate the gross value of a new customer and the maximum acquisition cost your business can support. If one customer is worth $2,000 in gross profit and you can responsibly invest 20% of that amount to acquire the customer, your maximum customer acquisition cost is approximately $400.
Work backward from the sales process
Advertising usually generates leads rather than closed customers. If one in four qualified leads becomes a customer, a $400 customer acquisition target translates into a maximum qualified-lead cost of roughly $100.
Estimate the traffic required
Suppose clicks in your market cost between $6 and $10 and your landing page converts 8% of visitors. At an $8 click cost, 100 clicks would require about $800 and could produce approximately eight enquiries. Actual results vary, but this calculation shows whether the proposed test can produce enough data to evaluate.
Avoid budgets that cannot generate learning
A very small daily budget may keep a campaign active while producing too few clicks or leads to make reliable decisions. In competitive GTA markets, a controlled test often requires concentrating spend on a narrow service, location and high-intent keyword set instead of trying to cover every opportunity.
What should be included in the decision?
- Average cost per click for your service and location.
- Expected landing-page conversion rate.
- Percentage of leads that are genuinely qualified.
- Sales close rate and customer value.
- Time required to collect enough data.
When should the budget increase?
Increase spend after tracking is reliable, lead quality is acceptable and the campaign is constrained by budget rather than by weak conversion. Scaling before those conditions are met usually magnifies inefficiency.

