Breakeven ROAS calculator
The ROAS in your dashboard is not the ROAS that matters. Enter your real unit economics and find the line where ads stop losing money — and the target that actually hits your profit goal.
How breakeven ROAS is calculated
Breakeven ROAS is a contribution-margin calculation. Start with your average order value, subtract everything it costs to deliver that order — product cost, shipping and fulfillment, payment and platform fees — and you get the contribution margin per order. Breakeven ROAS is simply AOV divided by that margin:
contribution margin = AOV − COGS − shipping − (AOV × fee %)
breakeven ROAS = AOV ÷ contribution margin
breakeven CPA = contribution margin
target ROAS = AOV ÷ (contribution margin − desired profit)A store with a $85 AOV, $32 COGS, $8 shipping, and 3.5% fees keeps about $42 of contribution per order — roughly 49% of revenue. Its breakeven ROAS is about 2.03. Any campaign running below 2.03 ROAS is destroying margin with every conversion it reports as a win.
Why platform ROAS misleads you
Ad platforms report revenue against spend and stop there. They do not know your product costs, your fulfillment rates, or your fee stack — so a 3.0 ROAS looks identical on a 60%-margin product and a 20%-margin one, even though the first is profitable and the second is bleeding. The most common failure mode we see in audits is a single account-wide ROAS target applied to a catalog where breakeven varies from 1.6 to 4.5 across categories.
The fix is unglamorous: compute breakeven per margin band, split campaigns or product groups accordingly, and set targets that reflect the economics of what is actually in the cart. This is the same margin-first logic behind POAS bidding — optimizing to profit on ad spend rather than revenue on ad spend.
What to do with the number
Treat breakeven as a floor, not a target. Bidding at breakeven means every marketing dollar returns exactly zero — you are running a charity for the ad platforms. Set your Smart Bidding target above breakeven by enough to fund the profit per order your business needs, then verify monthly that blended results (MER) agree with what the platforms claim. When platform ROAS and MER diverge, trust the bank account.
What is breakeven ROAS?
Breakeven ROAS is the return on ad spend at which advertising exactly covers its own cost after product, fulfillment, and payment costs — zero profit, zero loss. It equals AOV divided by contribution margin per order (equivalently, 1 divided by contribution margin percentage). A store with a 40% contribution margin breaks even at 2.5 ROAS: any campaign below that loses money on every order it generates, no matter how good the ROAS looks in the platform.
Why is my breakeven ROAS higher than I expected?
Most operators forget costs between revenue and profit: payment processing (typically 2.9% + fixed fee), marketplace or platform fees, shipping subsidies, packaging, and returns. Each one raises the breakeven line. If you compute breakeven from gross margin on the product alone, you will set bid targets that quietly lose money on fulfillment and fees.
What is the difference between breakeven ROAS and target ROAS?
Breakeven ROAS is the floor — the point of zero profit. Target ROAS is the number you actually give Smart Bidding, set above breakeven to leave the profit per order you want. If your breakeven is 2.5 and you want $10 profit on an $85 order, your target ROAS needs to be meaningfully higher. Bidding at breakeven means working for free.
Should I use ROAS or POAS for bidding?
POAS (profit on ad spend) is the better decision metric when margins vary across your catalog, because a high-ROAS order on a thin-margin product can be worth less than a modest-ROAS order on a high-margin one. ROAS remains the practical bidding input on most platforms. The workable compromise: compute breakeven per margin band and set different ROAS targets per campaign or product group.
Does breakeven ROAS account for repeat purchases and LTV?
No — this calculation is first-order profitability. If your customers reliably reorder, you can afford to acquire below first-order breakeven, because lifetime contribution covers the gap. That is a deliberate strategic decision that should be made with cohort data, not an excuse for unprofitable campaigns. Compute first-order breakeven first, then decide how far below it you are willing to buy growth.
Want these numbers computed from your actual account?
The free audit reads your real data and shows where the economics leak — no generic benchmarks, no sales theater.