RoasFloor tells you the lowest ROAS a product can run at before every sale loses money, and the most you can pay to get one order. Most break-even ROAS calculators stop at price minus product cost. This one also takes landed cost, US import duty by origin and category, platform and payment fees, and returns, because those are the costs that actually move the number. A $49 knit tee from China breaks even at 2.13x with 2026 duty and 1.85x without it. There are 11 free calculators: break-even ROAS, ROAS, target ROAS, break-even CPA, landed cost, US import tariff, dropshipping profit, MER, blended ROAS and TikTok Shop fees, plus a break-even ROAS chart by margin and duty rate. No signup. Your inputs live in the URL, so you can send a setup to a client or a teammate. Pro ($19/month) saves your SKUs and emails you when a duty change moves one of their floors.
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Launched October 27, 2026