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Guide

US sales tax and economic nexus for ERP projects

A short guide built from official sources. It is information, not tax advice, and every rule was checked against its official source on 6 November 2026.

What the official sources say

  • South Dakota v. Wayfair (June 21, 2018)

    Streamlined Sales Tax Governing Board Verified 2026-11-06

    Per the Streamlined Sales Tax Governing Board, the US Supreme Court ruled on June 21, 2018 that states can require sellers to collect and remit sales or use tax on sales delivered to locations in the state, regardless of physical presence.

    Source: www.streamlinedsalestax.org

  • Economic nexus thresholds differ by state

    Streamlined Sales Tax Governing Board Verified 2026-11-06

    Many states require remote sellers to collect sales tax once sales and/or transactions pass a state threshold. Some states use sales OR transactions, others sales AND transactions, and the base may be gross sales, gross revenues, retail sales or taxable sales.

    Source: www.streamlinedsalestax.org

  • Physical presence still requires registration

    Streamlined Sales Tax Governing Board Verified 2026-11-06

    A seller with a physical presence in a state is not a remote seller and must register there regardless of the amount of sales. The Wayfair decision did not change that obligation, so the seller checks with the state.

    Source: www.streamlinedsalestax.org, www.streamlinedsalestax.org

  • One state's threshold: Texas

    Texas Comptroller of Public Accounts Verified 2026-11-06

    Remote sellers with total Texas revenue under $500,000 in the preceding twelve calendar months are not required to obtain a permit or collect, report and remit Texas use tax. Revenue counts taxable and nontaxable sales of goods and services into Texas.

    Source: comptroller.texas.gov

  • Registration and returns are per state

    Streamlined Sales Tax Governing Board Verified 2026-11-06

    A remote seller is responsible for collecting and remitting tax from its registration date and for filing returns in each state it registers in. One no-fee application through the SST Registration System covers the Streamlined member states only.

    Source: www.streamlinedsalestax.org

A summary for orientation only. It is not legal advice.

Questions to answer before configuration

In which states do we sell and where are we present?

Sellers with a physical presence register regardless of sales volume, while remote sellers watch each state's threshold. List both, so the ERP holds one record per state.

  • States with a physical presence
  • States watched against a threshold

How does each state measure its threshold?

States differ on sales versus transactions, and on gross sales, retail sales or taxable sales. Texas, for example, publishes a revenue safe harbor. Your ERP reports should mirror the measure each state uses.

  • Measure and period per state
  • A report that tracks it monthly

Which registrations and returns are we responsible for?

Returns are filed per state, and the Streamlined registration system covers only Streamlined member states. The ERP calendar should list each filing and who owns it.

  • Registration date per state
  • Filing calendar with owners

What do our products and services count as?

Taxability by state was not sourced for this guide. Treat it as an open question for your adviser, and capture the answer on the item master in the ERP.

  • Taxability recorded per item
  • Adviser answer kept with the record

Platform pages

Sales tax questions

What changed after South Dakota v. Wayfair?

According to the Streamlined Sales Tax Governing Board, the June 21, 2018 ruling lets states require sellers to collect and remit sales or use tax on sales delivered into the state regardless of physical presence. Thresholds and dates are set by each state.

Is there one national threshold?

No. The official guidance says thresholds differ by state, with some based on sales or transactions and others on both. Check each state's department of revenue, because the summary chart on the official page is dated January 11, 2023.

Does a single registration cover every state?

No. The Streamlined Sales Tax Registration System has no fee and covers Streamlined member states only. Other states register separately, and a seller files returns in each state where it registers.

Discuss your US tax set-up

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