Break-Even ROAS & Target CPA Calculator

Break-Even ROAS is the exact return on ad spend required for a business to cover its Cost of Goods Sold (COGS) and variable costs without losing money on customer acquisition. By establishing your break-even floor, marketers can determine their Maximum Allowable CPA, ensuring every ad dollar spent scales the business profitably rather than burning cash.

How do you use this Break-Even calculator?

1. Input AOV: Enter your store’s Average Order Value.
2. Input COGS: Enter the cost to manufacture the products in that average order.
3. Input Variable Costs: Add up shipping, handling, and payment gateway fees.
4. Set Your Floors: The calculator will reveal your Gross Margin %, your Break-Even ROAS, and the highest CPA you can afford before operating at a loss.

What is Break-Even ROAS and how does it impact Unit Economics?

Optimizing campaigns in Meta Ads or Google Ads requires understanding the underlying business margins. Key unit economic variables include:

• Average Order Value (AOV): The average dollar amount spent per transaction.
• Cost of Goods Sold (COGS): The hard costs required to produce the item.
• Variable Costs: Additional per-order expenses like shipping, pick/pack fulfillment, and merchant processing fees (e.g., Stripe or Shopify fees).
• Gross Margin: The percentage of revenue remaining after all hard costs are subtracted.

How do you calculate Break-Even ROAS and Target CPA?

To calculate Break-Even ROAS, you must first determine your gross margin percentage, and then divide 1 by that margin. Your target CPA is simply your gross profit in dollars.

Gross Margin % = (AOV – COGS – Variable Costs) / AOV
Break-Even ROAS = 1 / Gross Margin %
Break-Even Target CPA = AOV – COGS – Variable Costs

Why use Break-Even ROAS instead of arbitrary ROAS goals?