Drop shipping treats one shipment as two sales for tax purposes, and depending on nexus, resale certificate rules, and marketplace facilitator laws, an ecommerce operator can owe tax in states they never set foot in. A 2026 field guide to who actually collects, the ten strict resale states, and the nexus thresholds — including transaction-trigger drops — that decide your exposure.
Marketplaces like Amazon, Etsy, and Shopify collect sales tax for you, but registration, zero returns, and economic nexus tracking are still your responsibility. A 2026 compliance routine for multi-channel sellers, with state thresholds and the six mistakes that trigger penalties.
How state income tax really works for remote employees who cross state lines: the convenience-of-the-employer rule used by seven states (including New York), which reciprocity agreements eliminate double taxation, day-counting evidence auditors accept, and the bookkeeping habits that keep multi-state returns predictable.
A 2026 guide to sales tax compliance for small businesses selling across state lines — how nexus works after Wayfair, which states repealed the 200-transaction rule, and a seven-step sequence to collect, file, and remit across 45 states without triggering audits.