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The Ad Spend Calculator.
A spreadsheet for working out whether your ad spend is actually profitable. Drop in your monthly numbers and it returns CPA, ROAS, ad spend as a percentage of revenue, and a defensible target for the next quarter.
What it covers
- Plain-language CPA, ROAS, and contribution-margin calculations with the formulas visible. No black box.
- A break-even ROAS calculator that accounts for cost of goods, fulfilment, and operating overheads. The number most agencies will not show you.
- A scaling-headroom worksheet that estimates how far you can push spend before saturation kicks in, based on your last three months of data.
- A monthly reconciliation template that compares platform revenue against your CRM. The first early warning when attribution starts to drift.
We built this for our own client work. It is the same calculator we run inside the first week of every PROFIT framework engagement. Free to download, free to use, no follow-up email sequence attached.
Why we made it free
Most operators we audit are scaling on the wrong number. They are optimising platform-reported ROAS without checking whether the underlying business unit economics support it.
The calculator forces the harder conversation. It shows the break-even ROAS your business actually needs (which is almost always higher than the agency target) and the headroom you have to scale before saturation starts. Both numbers belong in the same finance meeting as the campaign report.