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What I wish I'd known when starting — so you don't have to figure it out the hard way. 13+ years of business systems, digital marketing, and strategy for project & service businesses, shared.
Marketing Budget Tool

Google Ads Marketing Budget Calculator

Work out how many leads you need to hit your revenue target, and the maximum you can afford to pay Google Ads per lead while keeping total marketing spend under budget.

How to use this: fill in every field below — the tool recalculates instantly. This model is deliberately conservative: it's designed to hold your total marketing cost below your budgeted amount, since most businesses spend more per lead than they realise.

Leads Required

Calculate total leads needed per year to hit your revenue target.

$
$
%
Percentage of leads that turn into a sale.
#
Mail-outs, referrals, etc. Educated guess is fine.
$
Deducted from the new-sales target needed.

Budget Cost Per Lead

Calculate what you can afford to spend on Google Ads per lead.

%
$
Enter either field — the % and $ figure stay in sync (a common benchmark is 3%).
$
Flyers, print, signage, etc.
$
What your agency or consultant charges.
Check your inputs — conversion rate must be greater than 0.
Result

Your Monthly Budget Cost Per Lead

Google Ads leads needed / mo
Budget cost per lead
Ad spend / month
Daily budget

Leads Breakdown

New yearly customers needed
Yearly leads needed (total)
Leads/month target (total)
Leads/month target (Google Ads)
Leads/year target (Google Ads)

Budget Breakdown

Total marketing budget
Available for Google Ads
As % of turnover
Budget Google Ads cost per sale
Budget Google Ads cost per lead
Conservative budgeting model — holds total marketing spend below your target % of revenue.