Iowa Sales Tax and Invoicing Rules for 2026

TL;DR: Iowa charges a 6% state sales tax plus an optional 1% local option tax in most jurisdictions, for a typical combined rate of 7%. Remote sellers exceeding $100,000 in sales must collect. Most services are taxable, and invoices must itemize tax separately.

Iowa stands out among US states for its broad taxation of services. While many states limit sales tax to tangible goods, Iowa taxes a wide range of service categories from landscaping to pet grooming. This guide covers Iowa's rates, nexus rules, invoice requirements, exemptions, filing deadlines, and penalties for 2026.

State sales tax rate

Iowa levies a 6% state sales tax on retail sales of tangible personal property and enumerated services. Most cities and unincorporated areas impose an additional 1% local option sales tax (LOST), bringing the effective combined rate to 7% in the majority of Iowa locations. There is no additional county-level tax beyond LOST. Iowa is notable for taxing a broad range of services in addition to goods.

The local option tax is destination-based, meaning the tax applies based on where the goods are delivered or the service is performed. Sellers shipping into Iowa need to verify whether the destination jurisdiction has adopted the local option tax.

Nexus rules

Physical nexus is established through having a place of business, employees, inventory, or agents in Iowa. Regular delivery of goods using the seller's own vehicles also creates nexus. Having independent contractors soliciting orders in Iowa may also trigger nexus.

Economic nexus applies to remote sellers with $100,000 or more in gross revenue from sales into Iowa during the current or preceding calendar year. There is no separate transaction count threshold. Marketplace facilitators are required to collect and remit on behalf of third-party sellers. Iowa is a member of the Streamlined Sales and Use Tax Agreement (SSUTA), allowing simplified multi-state registration.

What must appear on invoices

The Iowa Department of Revenue expects invoices to include:

• Seller's name, address, and Iowa sales tax permit number
• Buyer's name and address
• Date of sale
• Description of each item or service
• Sale price before tax
• Sales tax amount shown as a separate line item
• Applicable rate (state plus local if applicable)
• Total amount due including tax
• Exemption certificate reference for exempt transactions

Iowa requires that sellers clearly indicate whether local option tax was collected and at what rate, since not all jurisdictions have adopted it. Sellers should retain all exemption certificates received from buyers for at least the statutory retention period.

Exemptions and special cases

Iowa provides the following exemptions:

• Unprepared food (groceries) is exempt from sales tax
• Prescription drugs and certain medical devices
• Agricultural machinery and equipment used in farming
• Industrial machinery and equipment (partially exempt through refund process)
• Sales to federal and state government entities
• Residential utilities including electricity, natural gas, and water
• Computers and peripherals used in processing or storage of data by insurance companies, financial institutions, and commercial enterprises (partial exemption)

Clothing is fully taxable in Iowa. Notably, Iowa taxes a wide array of services including but not limited to landscaping, janitorial services, pet grooming, and vehicle repair. Digital products and SaaS are generally taxable. Iowa also taxes specified digital products like e-books, streaming, and downloaded music. Prepared food is taxable at the full rate.

Filing frequency and deadlines

Iowa mandates electronic filing through GovConnectIowa. There is no vendor discount for timely filing in Iowa. Returns are required even for periods with zero tax collected. New businesses are typically assigned monthly filing for their first year.

Penalties for non-compliance

Late filing carries a penalty of 5% of the tax due per month, up to a maximum of 25%. A minimum penalty of $25 per return applies. Interest is assessed at the statutory rate determined annually by the Department of Revenue. Failure to obtain a sales tax permit carries a separate penalty. Iowa may assess taxes for the entire period a seller should have been collecting, going back up to three years (or longer in cases of fraud). Responsible officers may be held personally liable for unremitted taxes.

Frequently asked questions

Does Iowa tax services? Yes. Iowa is one of the broadest states for service taxation, taxing categories including janitorial, landscaping, pet grooming, vehicle repair, and many others. The state maintains a detailed list of taxable services in rule 701-26. Always verify whether your specific service is enumerated before assuming it is exempt.

Are digital products taxable in Iowa? Yes. Iowa taxes specified digital products including downloaded music, e-books, streaming services, and digital audiovisual works. SaaS is also generally taxable. The tax applies when the customer receives the product or accesses the service in Iowa.

Does Iowa offer a sales tax holiday? Yes. Iowa typically holds an annual two-day sales tax holiday in early August for qualifying clothing and footwear items priced under $100 per item. Check the Department of Revenue website for exact dates and qualifying items each year.

Are shipping charges taxable in Iowa? Iowa exempts transportation charges from sales tax when they are separately stated on the invoice and the transportation occurs after the sale. If shipping is bundled into the sale price, the full amount is taxable. Sellers should separately itemize shipping on invoices to preserve the exemption.