Break-Even ROAS: How to Know If Your Ads Make Money
A 5x ROAS can lose money and a 2.5x ROAS can make it. Learn how to work out your own break-even ROAS from margin, including shipping, fees and returns.
Why "good ROAS" depends on your margin
ROAS, or return on ad spend, is ad revenue divided by ad spend. If you spend Rs. 20,000 on ads and the platform reports Rs. 52,000 of sales, your ROAS is 2.60x. The ROAS calculator gives you that ratio and nothing more. It tells you how much revenue each rupee of advertising brought in, but not whether you kept any of it.
That gap is where sellers lose money. Revenue is not profit. Before a rupee of ad revenue becomes profit, it has to pay for the product, packaging, delivery, payment charges and the ad itself. So the useful question is not "what is my ROAS?" but "what is the lowest ROAS at which I stop losing money?" That number is your break-even ROAS.
The formula
Break-even ROAS = 1 ÷ margin, where margin is the share of the selling price left after every cost that rises with each extra order (as a decimal, so 40% is 0.40).
The logic is simple. If each Rs. 100 of sales leaves Rs. 40 after product and delivery costs, then Rs. 100 of ad spend must bring in Rs. 250 of sales (Rs. 100 ÷ 0.40) for those sales to produce exactly Rs. 100 of margin and pay for the ad. Any less and the ad cost more than the sales earned.
| Margin | Break-even ROAS |
|---|---|
| 10% | 10.00x |
| 20% | 5.00x |
| 30% | 3.33x |
| 40% | 2.50x |
| 50% | 2.00x |
| 60% | 1.67x |
Thin-margin products are the hardest to advertise. At 10% you need ten rupees of sales for every rupee of ads just to come out even.
Which margin should you use?
This is the step most people skip. There are two choices, and they give different answers.
- Gross margin counts only the product cost. It is the easy number, and it flatters you.
- Margin after variable costs also removes everything you pay per order: packaging, shipping, payment-gateway charges, marketplace fees and expected returns. This is the one to use for break-even ROAS.
Fixed costs such as rent, salaries and software do not belong in this number, because they do not change when you sell one more unit. Advertising decisions are about the extra unit. Keep fixed costs for your overall profit review.
Also use the price without GST. The tax you collect is passed to the government, so your revenue is the pre-tax price. If your listing price includes GST, take the tax out first. The GST calculator only adds tax on top of a price, so for a tax-inclusive price you will need to work backwards by dividing the price by one plus the GST rate. Make sure your ad platform's revenue figure and your margin use the same basis, either both with GST or both without.
Worked example: one product, two answers
Take a product that sells for Rs. 1,000 before GST. Your costs per order are:
- Product cost: Rs. 550
- Packaging and delivery: Rs. 90
- Payment charges at 2% of price: Rs. 20
Gross margin. (1,000 − 550) ÷ 1,000 = 45%. The profit margin calculator returns this if you enter revenue 1,000 and cost 550. Break-even ROAS on this basis looks like 1 ÷ 0.45 = 2.22x.
Margin after variable costs. 1,000 − 550 − 90 − 20 = Rs. 340 per order, which is 34%. Enter revenue 1,000 and cost 660 in the same calculator to get it. Break-even ROAS is 1 ÷ 0.34 = 2.94x.
Now the campaign. You spend Rs. 20,000 and the platform reports Rs. 52,000 of revenue, a ROAS of 2.60x. That is 52 orders at Rs. 1,000.
- Using the gross margin view: 52 × Rs. 450 = Rs. 23,400 of gross profit, minus Rs. 20,000 of ads, looks like Rs. 3,400 profit.
- Using the real per-order margin: 52 × Rs. 340 = Rs. 17,680, minus Rs. 20,000 of ads, is a loss of Rs. 2,320.
The same campaign is a win or a loss depending on which costs you counted. The campaign's 2.60x sits above the gross-margin break-even (2.22x) and below the true one (2.94x).
See the whole range at a glance
Using the same product and a Rs. 20,000 ad budget, here is what each ROAS level means in profit after all per-order costs.
| ROAS | Revenue | Orders | Profit after ads |
|---|---|---|---|
| 2.0x | Rs. 40,000 | 40 | −Rs. 6,400 |
| 2.5x | Rs. 50,000 | 50 | −Rs. 3,000 |
| 3.0x | Rs. 60,000 | 60 | Rs. 400 |
| 3.5x | Rs. 70,000 | 70 | Rs. 3,800 |
| 4.0x | Rs. 80,000 | 80 | Rs. 7,200 |
| 5.0x | Rs. 100,000 | 100 | Rs. 14,000 |
Break-even sits just under 3.0x. The profit at 3.0x is only Rs. 400, which a single bad week of returns can erase. Note that every extra 0.5x adds roughly Rs. 3,400 here, so the cost of missing your target is steep.
Returns change the answer
If a share of your orders are returned, the revenue disappears but some costs stay. Suppose 10% of orders come back, the product can be resold, the outbound shipping is not refunded and the payment charge is not returned. Then per order you earn 0.90 × (1,000 − 550) − 90 − 20 = Rs. 295, a margin of 29.5%. Break-even ROAS rises from 2.94x to 3.39x.
This is a simplified assumption, and your own return handling may cost more or less, such as reverse shipping or damaged stock. The point holds: if you sell categories with frequent returns, such as clothing, build the return rate into your margin before you judge a campaign.
From break-even to a target ROAS
Break-even is the floor, not the goal. To decide what you actually want, choose the profit you need as a share of revenue.
Target ROAS = 1 ÷ (margin − desired profit share). With a 34% margin and a target of 10% of revenue as profit, that is 1 ÷ (0.34 − 0.10) = 4.17x. Below that, the campaign still makes money but less than you wanted.
A related number is the most you can pay to win one order. In the example it is Rs. 340, the per-order margin. If your cost per order from ads (spend ÷ orders) is under that, you profit on the first sale. If it is above, you are relying on repeat purchases to recover the cost, and that is a separate, riskier bet which you should base on your own repeat-purchase data, not hope.
If you sell on a marketplace
Marketplace fees belong inside your per-order costs. The Amazon FBA calculator estimates net profit per unit as price minus your product cost, minus a flat 15% referral fee, minus the FBA fee you enter. Use it as a rough screen: Amazon's actual referral rate varies by category and price band, and the fulfilment fee depends on size and weight, so check the current fee schedule for your product and enter your real figure. Take the profit it shows, divide by the price, and you have a margin you can plug into the break-even formula.
A routine you can repeat
- List every cost that rises with one more order, and use the pre-GST selling price.
- Compute the margin after those costs, then 1 ÷ margin for break-even ROAS.
- Adjust for your return rate if it is meaningful.
- Pick a profit target and compute the target ROAS.
- Check each campaign or ad set with the ROAS calculator against these two numbers, not just the account average.
Limits of this approach
- The ROAS calculator divides revenue by spend. It does not know your margin, your costs or your returns. Zero spend gives an undefined result.
- Platform-reported revenue depends on the attribution window. Short windows miss delayed purchases, and generous ones may credit ads for sales that would have happened anyway.
- Break-even ROAS ignores customer lifetime value. If many buyers return and spend again, you may rationally accept a lower first-order ROAS, but only if you have your own repeat-purchase numbers.
- Margins move with supplier prices, discounts and shipping rates, so recheck them regularly.
- This article is general information about business arithmetic. It is not accounting, tax or financial advice.
The short version: a ROAS number means little until you set it against your own margin. Work out 1 ÷ margin with every per-order cost included, and judge each campaign against that.