Sales Tax & E-Commerce Channels
Registration and zero returns after nexus, marketplaces, Amazon FBA, 3PL, SaaS and digital goods, exemption certificates, VDAs and drop shipping.
8 articles · last reviewed 2026-07-18
What Is Sales Tax Nexus? The Most Common Traps for International E-Commerce Sellers
Sales tax nexus is the level of connection between a business and a state that allows the state to impose registration, collection, filing, and recordkeepi
Read article → Sales Tax & E-Commerce ChannelsAfter Nexus: registration, filing frequencies and zero returns
A nexus conclusion starts the coordination of permits, tax engines, orders, returns and the ledger.
Read article → Sales Tax & E-Commerce ChannelsAmazon collected the tax—why might the seller still have filing duties?
Marketplace-facilitator laws commonly shift collection and remittance for specified platform transactions to the marketplace.
Read article → Sales Tax & E-Commerce ChannelsHow Amazon FBA and 3PL inventory create physical presence
Inventory is company property.
Read article → Sales Tax & E-Commerce ChannelsWhere are SaaS, software and digital products taxable?
There is no durable national list of states that tax “SaaS.
Read article → Sales Tax & E-Commerce ChannelsResale and exemption certificate management for audit readiness
An exemption certificate is not complete merely because a PDF reached a shared drive.
Read article → Sales Tax & E-Commerce ChannelsPast-due state taxes: VDA, back filing, or prospective registration?
Registering online immediately after finding an old exposure may feel responsible, but it can surrender options before the company understands its timeline
Read article → Sales Tax & E-Commerce ChannelsWhy Sales Tax certificate chains break in drop shipping
A drop shipment has one movement of goods but commonly two sales: supplier to retailer and retailer to customer.
Read article →Get the companion guide：Multistate Nexus Risk Map & Self-Check Workbook →
