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Break-Even ROAS & Ad Spend CPA Calculator

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Essential paid-ads profitability calculator for Meta, Google, and TikTok advertisers. Enter AOV, COGS, shipping, and gateway fees to calculate exact Break-Even ROAS, maximum CPA ceiling, and multi-scenario profit.

100% In-Browser No Server Storage Instant Results
2.60x
Break-Even ROAS
1.87x
Margin 53.6% before ads
Max Allowable CPA
$34.82
Highest CPA before net loss
Attributed Revenue
$2,600.00
~40.0 orders at $65.00 AOV
Net Profit After Ads
$392.60
Ad ROI: 39.3%
Scenario ROASRevenueOrdersEst. CPANet Profit After Ads
1.25x$1,250.0019.2$52.00$-330.48
1.50x$1,500.0023.1$43.33$-196.58
2.00x$2,000.0030.8$32.50$71.23
2.50x$2,500.0038.5$26.00$339.04
3.00x$3,000.0046.2$21.67$606.85
4.00x$4,000.0061.5$16.25$1,142.46

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How It Works Under the Hood

Computes Pre-Ad Contribution Profit = AOV - (COGS + Shipping + Gateway % Fee + Fixed Fee + Other Variable Costs). Break-Even ROAS equals 1 / Contribution Margin Ratio, and Max Allowable CPA equals Pre-Ad Profit per order.

Step-by-Step Instructions

1

Enter Average Order Value (AOV) and per-order COGS, shipping, and gateway fees.

2

Inspect Break-Even ROAS and Max Allowable CPA immediately.

3

Adjust Test Ad Spend and Simulated ROAS slider to forecast Net Profit and Ad ROI.

4

Check the scenario ladder table (1.25x–4.0x) to set campaign stop-loss rules.

Key Features & Performance

  • Instant Break-Even ROAS Threshold: Know the exact multiplier where campaigns stop losing money
  • Max Allowable CPA: Clear upper limit for customer acquisition bids
  • Multi-Scenario ROAS Ladder: Compare revenue, order volume, CPA, and net profit side-by-side
  • 100% Confidential Unit Numbers: Margin metrics stay strictly inside your browser

Local Browser Processing & Privacy

Traditional web converters upload your documents, snippets, or media files to remote servers. Break-Even ROAS & Ad Spend CPA Calculator runs inside your browser tab:

Processed in This Tab

Your input text and files are processed locally without uploading payloads to a processing server.

No Tool Payload Logging

Microdeck does not log or store the files or inputs you paste into tool workspaces (normal static hosting/CDN requests still load page assets).

Tab Memory Lifecycle

Working outputs stay in your browser tab and are released when you reset the tool or close the tab.

Frequently Asked Questions

How is Break-Even ROAS calculated?

Break-Even ROAS = 1 ÷ Pre-Ad Contribution Margin. For example, if your contribution profit is $26 on a $65 AOV (40% margin), you break even at 1 ÷ 0.40 = 2.50x ROAS.

Does ROAS above Break-Even guarantee overall business profit?

Exceeding Break-Even ROAS ensures positive variable contribution per order after ad spend, which still needs to cover fixed monthly overhead such as salaries or software.

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