A SaaS Google Ads budget should be built from the economics of the product and sales funnel, not a generic monthly range. A self-serve tool and an enterprise platform can support very different acquisition costs.
Define the conversion that matters
- demo request;
- trial or signup;
- qualified opportunity;
- sales-accepted opportunity;
- closed-won customer where attribution is reliable.
Use the planning formula
Estimated media spend = target conversions ÷ expected conversion rate × expected CPC. Pull current keyword estimates for the markets you actually target and use historical landing-page data where available.
Work backwards from allowable acquisition cost
Use ACV or customer value, gross margin, opportunity-to-close rate and payback expectations to determine what a qualified opportunity can cost. A cheap demo is not valuable if it never becomes pipeline.
Split campaigns by intent
Separate brand, category, problem, competitor, integration and other materially different search themes so budget and lead quality can be judged properly.
Scale from downstream evidence
Increase spend when additional budget is constrained by demand and continues to generate acceptable qualified pipeline. Do not scale solely because the platform reports more conversions.
Related: Google Ads management and SaaS marketing.
