Since South Dakota v. Wayfair, Inc. (585 U.S., 2018), every US state applies an economic nexus threshold, typically $100,000 annual sales or 200 transactions. Enter your numbers; we map your obligations against the actual statute in each of the 50 states plus the District of Columbia, including which states' marketplace facilitator laws absorb your liability.
We work with sellers operating across Amazon, eBay, Shopify, Cdiscount, Bol.com, Allegro, Otto, Zalando, ManoMano and TikTok Shop. Marketplace facilitator law absorbs some sales-tax liability for the platforms' portion of your sales, but does not eliminate your registration obligations across every state where you have nexus from any channel.
We reconcile your marketplace data feeds against your obligations, file the right returns under the right schemes, and identify the OSS-versus-direct-registration breakpoint for your specific volumes.
For enterprise importers, brand owners, and multi-entity groups, sales tax is a discrete operating function with its own KPIs: states triggered, recoverable rate, days to authority resolution, voluntary disclosure cycle time.
We deliver this function as a managed service, with defined scope, monthly reporting cadence, named senior advisors, and audit-ready documentation that withstands financial-statement audit and IRS or state-revenue inquiry alike.
CiDATax handles US sales tax registration across all 50 states plus DC through the AVASK Group network. Marketplace facilitator reconciliation, monthly filings, audit defence.