Sales Tax Nexus in Iowa: What Online Sellers Need to Know

The Short Answer

Iowa triggers sales tax obligations at $100,000 in cumulative gross receipts — no transaction count required since July 2023. Iowa is an SST member, which simplifies registration. SaaS is taxable in Iowa. The state rate carries local option taxes in many communities.

Economic Nexus Threshold

• Dollar threshold: $100,000 in cumulative gross receipts from retail sales into Iowa
• Transaction threshold: None — eliminated effective July 1, 2023 (Iowa SF 514)
• Effective date: January 1, 2019 (original); simplified to revenue-only July 1, 2023

Does Iowa Count Marketplace Sales Toward Your Threshold?

Marketplace facilitators collect and remit Iowa sales tax on their facilitated transactions. Marketplace sellers may be relieved from their own collection obligation when the marketplace is collecting. Taxero confirms your specific situation during onboarding.

What Taxable Products Look Like in Iowa

• Local option tax (LOST): Many Iowa communities add a local option tax on top of the state rate
• Groceries: Most grocery items exempt
• Clothing: Taxable
• SaaS and digital goods: Taxable. Iowa follows SST definitions — SaaS is taxable as a specified digital product.

How to Register in Iowa

Iowa is an SST member:

• SST SSTRS: sstregister.org — preferred path
• Direct: GovConnectIowa at tax.iowa.gov
• Cost: Free

Filing Requirements

Monthly (annual liability ≥ $1,200), quarterly, or annual. Due last day of the following month.

What Happens If You Don't Register

Late filing: 10% of tax due. Interest at statutory rate.

How Taxero Handles Iowa

Taxero uses SST registration for Iowa, applies SaaS taxability, tracks the $100K threshold (revenue-only since July 2023), and manages monthly or quarterly GovConnectIowa filings.

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