Cross-border tax guides
Find sales-tax, VAT, GST, marketplace, FBA, and low-value import guidance by market and transaction flow. Each guide includes sources and an update date.
US sales tax, marketplaces, and FBA
US sales tax nexus for online sellers (2026)When online and Amazon FBA sellers have to register for US sales tax — economic nexus thresholds, marketplace facilitator rules, and what triggers a filing obligation.2026-07-08US economic nexus thresholds by state (2026)A state-by-state reference of US sales tax economic nexus thresholds for remote and cross-border sellers, covering the $100k states, the $500k states, and the disappearing 200-transaction test.2026-07-08US sales tax for non-US (overseas) sellers (2026)Do overseas sellers owe US sales tax? Economic nexus is based on where your customers are, not where your company is — here's what changes (and what doesn't) when you're based outside the US.2026-07-08Do Amazon FBA sellers have to collect US sales tax? (2026)Whether FBA sellers owe US sales tax, how marketplace facilitator laws cover Amazon sales, and when FBA inventory creates nexus.2026-07-08Do TikTok Shop sellers owe US sales tax? (2026)How US sales tax works for TikTok Shop sellers — what the platform collects under marketplace facilitator law, what's still on you, and when warehoused inventory changes the picture.2026-07-08
UK and EU VAT, IOSS, and imports
UK VAT registration threshold for sellers (2026)The UK VAT threshold is £90,000 — but overseas sellers often have no threshold at all. When cross-border sellers must register for UK VAT.2026-06-15Selling to UK consumers from overseas: the £135 VAT rule and when you must register (2026)How overseas (non-UK-established) sellers handle UK VAT when shipping to UK consumers: the £135 low-value import rule, the marketplace deemed supplier rule, and why holding UK stock removes any registration threshold.2026-07-08EU VAT for non-EU sellers: IOSS, OSS & the €150 change (2026)For non-EU sellers, do not treat €10,000 as a safe harbor for DTC sales. Review DTC and marketplace sales separately, then compare the ≤€150 IOSS route with the normal import path.2026-07-08IOSS explained: EU VAT for parcels under €150 (2026)What IOSS is, who actually needs to register for it, and when a marketplace handles it for you instead. Covers the mechanics, not the customs duty change.2026-07-08The EU €150 customs change (July 2026): what sellers must doThe EU removed the €150 customs duty exemption on 2026-07-01. What changed, how VAT/IOSS still fits, and what non-EU Amazon, Temu, TikTok Shop and DTC sellers should check.2026-06-26
Australia and Southeast Asia GST
Australia GST on low-value imported goods for overseas sellers (2026)When overseas DTC sellers need to review Australian GST on low-value imported goods, marketplace tax collection and the A$75,000 GST turnover threshold.2026-07-08Singapore low-value goods GST and OVR for overseas sellers (2026)A Singapore-first GST review for overseas sellers shipping low-value goods or selling remote services into Singapore.2026-07-08