About
Import Math helps sellers pressure-test product margins before inventory decisions.
The calculators combine landed cost, tariff overlays, MPF, HMF, freight, marketplace fees, and target margin into one worksheet. The goal is practical planning, not official classification or customs advice.
What the calculators are for
Import Math is built for Amazon, Shopify, Etsy, TikTok Shop, eBay, Walmart Marketplace, and direct-to-consumer sellers who need to quickly see whether a product still works after duty, freight, fees, and fulfillment.
What they are not
The site does not classify merchandise, issue customs rulings, replace a broker, or verify eligibility for exclusions, trade programs, or country-of-origin claims. Always verify the HTS code and current rule stack before acting.
Related projects
From the same publisher: The Desk Brief for concise business notes and StockScreener.ca for Canadian account-location education.