Break-Even ROAS Calculator
Discover the exact Return on Ad Spend (ROAS) you need to hit profitability. Calculate your max Target CPA and gross margins to safely scale your campaigns.
Your Profitability Baseline
How to Find Your Break-Even Point
Input Your Sale Price
Enter your Average Order Value (AOV) or the final retail price of the specific product you are running ads for.
Enter Your COGS
Add the exact Cost of Goods Sold. This is how much you pay your supplier or manufacturer to produce the item.
Account for Hidden Costs
Include pick & pack fees, shipping costs, payment gateway fees (like Stripe/PayPal), and any variable taxes to ensure an accurate margin.
Set Your Ad Limits
Use the generated Break-Even ROAS as your strict minimum target in Google and Meta. Use the Break-Even CPA as your maximum allowable acquisition cost.
Why Scaling Without Break-Even ROAS is Dangerous
Many e-commerce founders and junior media buyers obsess over hitting a "3x ROAS" because it sounds impressive. But if your profit margins are razor-thin, a 3x ROAS might actually be losing you money on every single sale.
Break-Even ROAS is the absolute mathematical floor of your advertising campaigns. It represents the exact Return on Ad Spend required to pay for the product, shipping, fees, and the ad click itself, leaving you with exactly £0 profit. Anything above this number scales your profit; anything below it burns your cash reserves.
At Nexa Growth, we never launch a scaling campaign without strictly mapping out the unit economics. Knowing your Break-Even Cost Per Acquisition (CPA) allows you to confidently bid aggressively against competitors. If you know you can spend up to £45 to acquire a customer without losing money, you can outbid the competitor who incorrectly thinks they have to pause their ads at £30.
Frequently Asked Questions
What is Break-Even ROAS?
Break-Even ROAS (Return on Ad Spend) is the revenue you need to generate for every £1 spent on advertising just to cover all product and marketing costs. Hitting this number means you make zero profit, but you also take zero losses.
How do you calculate Break-Even ROAS?
The formula is: 1 ÷ Gross Profit Margin (%). For example, if your product sells for £100 and all your costs are £60, your profit is £40 (a 40% margin). Your Break-Even ROAS is 1 ÷ 0.40 = 2.5x.
What is Break-Even CPA?
Break-Even CPA (Cost Per Acquisition) is your Gross Profit per unit. It is the absolute maximum amount of money you can spend on ads to acquire a single paying customer before your campaign becomes unprofitable.
Why is my Break-Even ROAS so high?
A high Break-Even ROAS indicates low profit margins. If your COGS, shipping, and processing fees consume a large percentage of your sale price, you will require a massive ROAS just to survive. To lower your BE-ROAS, you must either raise your prices or negotiate cheaper production costs.
Is it ever okay to run ads below Break-Even ROAS?
Yes, if you have a strong Customer Lifetime Value (LTV). Many SaaS and subscription brands take a loss on the first sale (running below break-even) because they know the customer will buy repeatedly over the next 12 months, resulting in long-term profit.