Enterprise
Individual & Small Business
Idaho Sales Tax Nexus: Economic Nexus Threshold (2026)
Idaho's economic nexus threshold for remote sellers is $100,000 in sales, measured over the current or previous calendar year. Marketplace sales count toward Idaho's threshold. Inventory or another physical presence in Idaho generally creates nexus regardless of sales. The state rate is 6%, plus local taxes.
Idaho sales tax nexus: key facts
| Sales threshold | $100,000 |
|---|---|
| Transaction threshold | None |
| Test | Sales only |
| What counts | total sales into Idaho, including sales made through marketplace facilitators, exceeding $100,000 |
| Measurement period | current or previous calendar year |
| Marketplace sales count toward your threshold? | Yes, counted |
| Marketplace facilitator law | Yes: marketplaces generally collect on the sales they facilitate |
| State rate | 6% |
| Local sales taxes | Yes, in addition to the state rate |
| Current threshold effective | June 1, 2019 |
| Recent change | None found in our research |
| Registration | Official registration page |
| Last researched | September 23, 2026 |
The state rate is the statewide state-level rate only. Local and district rates are extra where they apply.
Quick check: do you have nexus in Idaho?
Enter your Idaho sales to see whether you may have nexus.
Selling into several states? Use the full Sales Tax Nexus Checker. Your figures stay in your browser.
What to do after crossing the Idaho threshold
We did not find a specific start-date rule for Idaho in the sources reviewed. Check the official guidance before you begin collecting.
- Confirm the numbers. Check your Idaho sales against the measure and period in the key facts above.
- Register before you collect. Use Idaho's official registration page. Collecting a state's tax without a registration is generally not allowed.
- Collect and file. Charge Idaho sales tax (plus any local taxes that apply at the delivery address) on taxable sales from the start date, and file returns on the schedule the state assigns. Marketplaces generally collect on the sales they facilitate, so you usually collect on your direct sales.
- Look back. If you crossed the threshold in an earlier period and did not register, get advice on those periods. Many states have voluntary disclosure programs that may limit penalties.
Physical presence and inventory in Idaho
Retailers with a physical presence in Idaho (including inventory stored in Idaho, e.g., in FBA/3PL warehouses) must hold a seller's permit regardless of sales volume. Idaho state-specific physical-nexus guidance could not be retrieved because the official site was unreachable.
Marketplace sellers in Idaho
Do marketplace sales count toward your own threshold? Yes, counted.
Idaho State Tax Commission guidance (Online Sellers Guide) says a retailer without physical presence whose total sales in Idaho, including sales made through a marketplace facilitator, exceed $100,000 in the current or previous calendar year is engaged in business in Idaho and needs a seller's permit. Marketplace facilitators combine their own sales with third-party sales.
Other things to know about Idaho
- Idaho's threshold is 'exceeds $100,000'. Idaho never adopted a transaction-count test.
- The remote seller and marketplace facilitator law took effect June 1, 2019 (per Idaho State Tax Commission online seller guidance).
- Idaho has a limited set of local option taxes (e.g., resort city taxes and auditorium district taxes) rather than broad county or city sales taxes. How remote sellers should handle them could not be confirmed from the official site.
Frequently asked questions
What is the Idaho economic nexus threshold?
$100,000 in sales, measured over the current or previous calendar year. What counts: Total sales into Idaho, including sales made through marketplace facilitators, exceeding $100,000.
Do marketplace sales count toward the Idaho threshold?
Yes, counted. Idaho State Tax Commission guidance (Online Sellers Guide) says a retailer without physical presence whose total sales in Idaho, including sales made through a marketplace facilitator, exceed $100,000 in the current or previous calendar year is engaged in business in Idaho and needs a seller's permit. Marketplace facilitators combine their own sales with third-party sales.
Does FBA or 3PL inventory in Idaho create nexus?
Retailers with a physical presence in Idaho (including inventory stored in Idaho, e.g., in FBA/3PL warehouses) must hold a seller's permit regardless of sales volume. Idaho state-specific physical-nexus guidance could not be retrieved because the official site was unreachable.
Does Idaho have a transaction-count test?
No. Idaho uses only the dollar threshold.
Crossed the Idaho threshold, or not sure? A professional can confirm it and handle registration.
Nexus Study + Registration + Cleanup
Fixed price, quoted before any work starts
- State-by-state review of your sales and inventory locations
- Registration in states where you have nexus
- Plan for any past-due periods (including voluntary disclosure where appropriate)
- Ongoing sales tax filing option
Disclaimer: This page provides general information for educational purposes and is not tax, legal or accounting advice. State rules change, and whether you have nexus can depend on facts not covered here. Confirm with Idaho's official guidance or a qualified professional before acting. RAHA Financials is not affiliated with any state tax agency.
Sources
- Primary official source: https://tax.idaho.gov/taxes/sales-use/guides-for-certain-groups/online-sellers/online-guide/
- tax.idaho.gov: https://tax.idaho.gov/taxes/sales-use/permits/who-needs-a-sellers-permit/
- tax.idaho.gov: https://tax.idaho.gov/taxes/sales-use/guides-for-certain-groups/online-sellers/
- legislature.idaho.gov: https://legislature.idaho.gov/statutesrules/idstat/title63/t63ch36/sect63-3620e/
- tax.idaho.gov: https://tax.idaho.gov/taxes/sales-use/guides-for-certain-groups/online-sellers/business-types/