Idaho Sales Tax Nexus
Idaho Risk Profile
(Note: Idaho is a revenue-only state. The 200-transaction rule was repealed in 2023.)Physical Nexus: Standard triggers apply (offices, employees, inventory). Idaho is particularly vigilant about the rental or leasing of tangible property; even one leased item used in-state can trigger immediate nexus for all business taxes.
Effective Date: June 1, 2019.
Look-back Exposure: Generally 3 years. Idaho is NOT a member of the Streamlined Sales Tax (SST) agreement and is known for its independent and focused audit approach, especially regarding e-commerce and 3PL fulfillment.
Danger Level: MODERATE (The SaaS & Bundling Risk)
Idaho treats Software-as-a-Service (SaaS) as taxable. Furthermore, if you bundle a non-taxable service with a taxable product (like a software subscription with professional consulting) and do not itemize them separately on the invoice, the entire transaction may become taxable, leading to significant audit assessments.
The Trap: Grocery Tax Liability
Because Idaho taxes groceries at the full 6% rate, remote sellers who mistakenly assume food is exempt face a high risk of under-collection. This is a common finding in Idaho audits for out-of-state retailers.
Idaho State Tax Nexus Summary
Idaho follows a revenue-based economic nexus standard. While the state is not a member of the Streamlined Sales Tax (SST) agreement, its $100,000 threshold is straightforward, though its taxability rules for services and digital goods are broad.
Sales Tax Nexus
Remote sellers and marketplace facilitators establish nexus in Idaho if they meet the following threshold in the current or previous calendar year:
- Economic Threshold: $100,000 or more in cumulative gross receipts from Idaho sales.
- Update: Idaho has repealed its transaction count threshold. Nexus is now based strictly on the $100,000 revenue limit.
Physical nexus is triggered immediately by having a physical presence in the state, such as an office, remote employees, or inventory stored in an Idaho warehouse or fulfillment center (including Amazon FBA).
Corporate Income Tax
Idaho imposes a 5.8% corporate income tax. While out-of-state sellers of tangible goods may be protected by Public Law 86-272, businesses with a substantial economic presence or those providing taxable services in the state likely have a filing requirement.
Taxability of Groceries, SaaS, and Digital Goods
Idaho taxes groceries at the full state rate. Furthermore, the state is aggressive in taxing the digital economy; streaming, downloads, and Software-as-a-Service (SaaS) are generally subject to the 6% state sales tax.
Conclusion
Because Idaho is not an SST member, their rules can be more rigid and their audits more specialized. We recommend a full taxability review for businesses selling digital products or those providing “bundled” services to Idaho customers.
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