Break-Even ROAS: The Number Every Advertiser Needs
A 3x ROAS can be a windfall or a slow bleed depending on your margins. Here is how to calculate break-even ROAS properly and turn it into a target you can manage to.
"Is a 2.5 ROAS good?" is one of the most common questions in paid media, and it has no answer until you know one more number: your break-even ROAS.
Break-even ROAS is the return on ad spend at which an order neither makes nor loses money once advertising is paid for. Above it, ads are adding profit. Below it, every sale costs you. Without this number, you are judging campaigns by feel.
This guide shows how to calculate it correctly, the costs most people forget, and how to turn it into a target you can actually run your ads against.
The formula
Break-even ROAS = 1 / Contribution margin %Contribution margin is what is left from a sale after every variable cost of fulfilling it, but before advertising. If 40% of each sale is left after costs, break-even ROAS is 1 / 0.40, or 2.5. At a 2.5 ROAS, the ad spend consumes exactly that 40%.
You can also express it in dollars:
Break-even ROAS = Average order value / Contribution margin per orderBoth versions give the same answer. The dollar version is often easier because you work with real order numbers.
Step by step: a worked example
Say you sell a $75 insulated water bottle bundle. Here is a realistic cost breakdown per order:
| Cost | Amount |
|---|---|
| Product cost (landed, incl. freight and duties) | $19.00 |
| Packaging | $1.50 |
| Shipping to customer | $7.50 |
| Payment processing (about 2.9% + $0.30) | $2.48 |
| Pick, pack and fulfillment fees | $3.00 |
| Returns and damages allowance (4% of revenue) | $3.00 |
| Discount allowance (average 10% off) | $7.50 |
| Total variable cost | $43.98 |
Contribution margin per order is $75 minus $43.98, or $31.02. That is 41.4% of the $75 price.
Break-even ROAS = $75 / $31.02 = 2.42.
So if this campaign returns $2.42 in revenue for every $1 of ad spend, it breaks even. At 3.0 ROAS it is making money. At 2.0 it is losing about $6 an order.
Run your own numbers with the free break-even ROAS calculator.
The costs people forget
Most break-even mistakes come from a contribution margin that is too optimistic. Check that you have included:
- Landed cost, not factory cost. Freight, duties and inbound shipping belong in product cost.
- Free shipping. If you offer it, its cost is part of every order.
- Discounts. If the average order uses a 10% code, your real price is 10% lower.
- Payment fees. Small per order, but they add up.
- Returns and exchanges. Apparel and footwear can lose a significant share of revenue to returns. Use your own historical rate.
- App and platform fees that scale with orders. Some subscription and review apps charge per order.
- Agency or management fees if they scale with spend. Fixed monthly fees belong in overhead, but percentage-of-spend fees act like extra ad spend.
Leave any of these out and your break-even ROAS will look lower than it really is, which means you will happily scale campaigns that lose money.
From break-even to target ROAS
Break-even is the floor, not the goal. You also need to cover fixed costs (salaries, software, rent) and leave a profit.
Decide what share of revenue you want left as profit per order after ads. Then:
Target ROAS = 1 / (Contribution margin % - Desired profit %)With a 41.4% contribution margin and a desired 15% profit per order:
Target ROAS = 1 / (0.414 - 0.15) = 1 / 0.264 = 3.79.
| Desired profit per order | Ad spend allowed (% of revenue) | Target ROAS |
|---|---|---|
| 0% (break-even) | 41.4% | 2.42 |
| 5% | 36.4% | 2.75 |
| 10% | 31.4% | 3.18 |
| 15% | 26.4% | 3.79 |
| 20% | 21.4% | 4.67 |
This table is worth printing. It shows that pushing for a little more profit per order demands a much higher ROAS, which becomes harder to hit at scale.
When it's fine to run below break-even
First-order break-even is not always the right line. Some businesses can profitably acquire customers at a loss on the first purchase.
Repeat purchase businesses
If customers reorder, the first order does not need to carry all the acquisition cost. Say a $40 supplement subscription has $18 of contribution margin per order and the average customer orders four times. Lifetime contribution is $72. You could pay up to $72 to acquire a customer and still break even over their life, which works out to a first-order ROAS of $40 / $72, or about 0.56.
Few brands would actually run that close to the edge, because cash flow and churn uncertainty matter. But it shows why a subscription brand can rationally accept a first-order ROAS below its single-order break-even. Pair this with a clear LTV to CAC ratio so you know how far you can stretch.
New channel tests
When you test a new channel, the platform's reported ROAS often understates its true impact, because tracking is still maturing and buyers convert later through other routes. For a channel like ChatGPT ads, where someone may see your chat card while researching and buy days later from a branded search, judge a test on incremental revenue and new customers as well as reported ROAS.
Break-even ROAS by channel
Your break-even ROAS is a property of your product, not the platform. It is the same whether the click comes from Meta, Google or ChatGPT. What changes is how each platform reports revenue.
Platforms use different attribution windows and each tends to credit itself. A sensible approach:
- Calculate one break-even ROAS for your product or store.
- Compare each platform's reported revenue against your actual store revenue over a month to estimate how much each over- or under-reports.
- Adjust your per-platform target accordingly.
For example, if summed platform claims usually run about 30% above actual revenue, a reported ROAS of 3.1 may be closer to 2.4 in reality. That sits right at break-even in our water bottle example. This is exactly why brands pair ROAS with blended metrics; see ROAS vs MER vs CAC for how to combine them.
Break-even CPA: the same idea per order
If you prefer thinking in costs per sale, break-even cost per acquisition is simply your contribution margin per order. In the water bottle example, break-even CPA is $31.02. Any campaign acquiring buyers for less than that is profitable on the first order.
This version is handy when you are evaluating click costs. If you pay $3.50 per click and your landing page converts at 4%, you need 25 clicks per sale, costing $87.50. That is far above $31.02, so you would need a higher conversion rate, a cheaper click, or a higher order value to make it work. The CPC calculator and conversion rate calculator help you explore those trade-offs.
Levers to lower your break-even ROAS
If your break-even ROAS is above what you can realistically hit, fix the economics rather than hoping ads will improve:
- Raise average order value with bundles, multipacks or a free-shipping threshold set slightly above your typical cart.
- Cut discounting. Moving from an average 15% discount to 5% can improve margin dramatically.
- Renegotiate shipping or switch carriers for your most common package size.
- Reduce returns with better sizing guides and more accurate product photos.
- Raise prices where your brand and reviews support it. Even a few dollars can move break-even meaningfully.
In our example, raising the bundle price from $75 to $82 with no change in costs would add $7 of margin per order, lifting contribution to about $38 and dropping break-even ROAS from 2.42 to roughly 2.16.
How SecondWin uses break-even thinking
When SecondWin launches ChatGPT ads for a consumer brand, the campaigns live in your own OpenAI ad account, with your pixel and your numbers, so you can measure them against the break-even ROAS you set here. We start from messages that have stayed live longest in your niche's Meta ads, which is a practical way to give a new channel a fair test without burning budget on untested angles. Plan costs are flat and published on our pricing page.
To see the buyer questions and starting ad concepts for your store, run the free website analysis.
FAQ
What is a good ROAS if my break-even is 2.5?
Anything above 2.5 is profitable at the order level, but you also need to cover fixed costs and earn a profit. Most brands with a 2.5 break-even aim for something in the 3 to 4 range, depending on how much profit per order they want and how much repeat purchase they expect. Use the target ROAS formula to work out the exact number for your desired profit margin.
Should break-even ROAS include fixed costs like salaries?
Usually no. Break-even ROAS uses only variable costs that scale with each order, such as product, shipping, payment fees and returns. Fixed costs like salaries, software and rent are covered by the profit you earn above break-even. Including them per order makes the number depend on volume, which is confusing. Instead, set a target ROAS that leaves enough margin to cover those fixed costs.
Is break-even ROAS different for each product?
Yes, if your products have different margins. A high-margin accessory might break even at 1.8 while a low-margin hero product needs 3.2. If you sell many products, you can calculate a blended break-even based on your typical order mix, but campaigns that promote a single product should be judged against that product's own break-even ROAS.
How does break-even ROAS relate to MER?
They use the same margin math. Break-even ROAS applies it to a campaign or platform's attributed revenue, while break-even MER applies it to total revenue divided by total marketing spend. Because MER cannot be double-counted, it is the more reliable check that your whole marketing program is above break-even, while ROAS is more useful for comparing individual campaigns.