How does Taxwire compare to Sphere?

Taxwire tracks both economic and physical nexus and provides an in-house filing team with full VAT and GST compliance. Sphere covers economic nexus only, has no physical nexus tracking, and has no in-house filing team, relying on a self-serve, AI-assisted support model instead.

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Sales Tax in Union, IA.

Get the current sales tax rate for Union, Iowa — and automate compliance with Taxwire.

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Iowa

Union

The sales tax rate in Union, Iowa is 7%

This combined rate includes Iowa's state tax of 6% plus local taxes. The exact rate can vary slightly depending on your precise location within the city, as some addresses fall within special taxing districts.

Union, IA

Combined sales tax rate

Need help with Iowa sales tax?

Our team can help you navigate Iowa's state tax requirements.

Tax rate breakdown

The combined sales tax rate of 7% for Union is made up of the following components:

Tax on Sale

State

County

City

District

Tax due on sale

Why sales tax rates vary across Iowa?

Iowa allows local governments to levy additional sales taxes on top of the state rate. This means the total sales tax you collect or pay depends on the specific address of the transaction — not just the city or ZIP code. Two businesses on opposite sides of the same street can have different tax obligations if they fall in different jurisdictions.

This is why accurate, address-level tax calculation matters. A single ZIP code in Iowa can contain multiple tax rates.

Simplify Iowa sales tax compliance

Staying compliant with Iowa sales tax can be complex — rates change, rules vary by product, and you need to track nexus across multiple jurisdictions. Taxwire automates sales tax calculation, filing, and remittance so you never miss a deadline.