Why can a good ROAS still mean I lose money?

You open your ad dashboard and see a ROAS of 4. Everyone says that is good. Yet at the end of the month your bank balance has not moved. Both things can be true, and the reason is simple: ROAS counts sales, while your bank balance counts what is left after costs.

What ROAS actually measures

ROAS is sales from ads divided by ad spend. It says nothing about how much of each sale you keep. Two shops can both show a ROAS of 4 and have completely different results.

Two shops, same ROAS

Say each shop spends Rs 250 on ads and gets Rs 1,000 in sales. ROAS is 4 for both.

Shop one keeps 40 percent of each sale after product cost, packing, shipping and payment fees. That is a contribution of 40 percent of Rs 1,000, which is Rs 400.

• Rs 400 minus the Rs 250 of ads leaves Rs 150 profit.

Shop two sells something with thinner margins and keeps only 20 percent. Its contribution is Rs 200.

• Rs 200 minus Rs 250 leaves a loss of Rs 50.

Same dashboard figure, opposite result. The second shop is paying Rs 250 to earn Rs 200.

Your break-even ROAS

You can work out the ROAS you need in order not to lose money. It is simply one divided by your contribution share.

• At 40 percent contribution, break-even ROAS is 1 divided by 0.4, which is 2.5. Anything above 2.5 earns something, so a ROAS of 4 works.
• At 20 percent contribution, break-even ROAS is 1 divided by 0.2, which is 5. A ROAS of 4 is below the line, so you lose.

Many sellers copy a target ROAS from someone else without checking their own break-even. Your number depends entirely on your margins. break-even-roas-calculation goes through the formula step by step.

Things that make the real picture worse

The example above is the neat version. In practice, the following also reduce what you keep:

• Returns and refused COD orders. A sale that never gets delivered still counted in ROAS. See cost-of-one-refused-cod-order.
• Discounts you gave to win the sale, if the dashboard shows the post-discount figure and your costs are fixed.
• Free shipping you absorbed.
• Overheads, such as tools, packaging stock and your own pay, which sit outside contribution but still have to be paid.

If you only look at ROAS you will miss all of these.

What to track instead

Keep a simple monthly sheet with:

• Ad spend.
• Sales from ads.
• Contribution percent for those products.
• Contribution minus ad spend, which is the profit from ads before overheads.

That last line is the one that matters. If it is positive and growing, ads are working. If it is negative, ROAS may be flattering you.

What to do if you are below break-even

• Raise prices or reduce discounts. A small change to margin has a big effect on break-even ROAS.
• Push products that have a better contribution share.
• Improve conversion on your store so each click is worth more.
• Cut ads that bring in low margin products.

If you want to understand how much of each order you can safely give to ads, ad-budget-from-contribution-margin shows a simple rule.

ROAS is a useful signal for comparing ads against each other. It is not a verdict on whether you are making money. Use it as a speedometer, and use contribution as the fuel gauge.