Free Iowa Tax Calculator

Iowa taxes income at a single flat 3.8% rate for 2026 — one of the lowest flat rates in the country. The old bracket ladder (the odd 2024 version had a 5.96% middle rate above a 5.7% top rate) is gone: all levels of taxable individual income are subject to the same 3.8%. Iowa lets you use the federal standard deduction ($16,100 single / $32,200 married) on the state return.

A $72,000 single salary: taxable income after the federal deduction is $55,900. The flat 3.8% applies to all of it — about $2,124, a 2.95% effective rate. Des Moines, Cedar Rapids, and Iowa City add no local income taxes.

Iowa is one of the states that taxes Social Security for high earners (phase-out starts at $75,000 for 2026, exempt below), though the exemption rules keep expanding. The state offers a notable deduction for federal income taxes paid — one of the last states to allow it — which softens the effective burden for mid-to-high earners.

Property tax runs 1.71% average — high, driven by school district levies — while combined sales tax is 6.94%. Iowa has also been cutting corporate rates aggressively, and the income tax is scheduled to keep simplifying toward a flatter structure in future years.

Filing in Iowa: the resident return is Form IA 1040, filed with the Iowa Department of Revenue — and Iowa's deadline is April 30, two weeks after the federal due date. Free e-file is available for most residents.