Profit-to-Acquisition Ratio Calculator

Set realistic targets backed by math

Most target ROAS and CPA numbers come from stakeholder pressure or industry benchmarks. This calculator derives them from your actual unit economics: margin, reinvestment intent, and deal value.

Inputs
Currency
%
Net margin after COGS and fulfillment, before ad spend
%
Conservative
under 25%
Balanced
25-50%
Aggressive
50-75%
Hyper
over 75%
How much of your profit margin you are willing to reinvest per acquisition
$
Required to also output breakeven and target CPA alongside ROAS
Results

Enter your numbers on the left to see your targets.

Results will appear here as you type.
Conservative Starvation Zone
PAR: 50% (Balanced)

Three steps from margin to target

01
Calculate your breakeven point

Your breakeven ROAS is derived entirely from your margin. It is the minimum return needed for ads to not cost the business money. No benchmarks, no guesswork.

02
Decide your reinvestment percentage

The profit-to-acquisition ratio expresses how much of your margin you are willing to trade for a new customer. This is a strategic business decision, not a platform setting.

03
Set your target with confidence

Divide the breakeven by your reinvestment ratio. The result is a target backed by your own numbers, which means you can defend it in any stakeholder conversation.

Have the numbers. Need the strategy?

Knowing your target ROAS is step one. Building campaigns that hit it consistently is the actual work. If your account is not performing to your unit economics, let's talk.

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