Iowa State Tax Calculator 2026
Estimate your Iowa state income tax and take-home pay for tax year 2026.
Last updated: November 2025 · Source
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Iowa 2026 tax overview
Flat 3.8% per IDR Oct 2025 announcement; conforms to federal std deduction.
Breakdown
Frequently Asked Questions
What are the 2026 Iowa income tax rates?
Iowa has a flat 3.80% rate on taxable income. Flat 3.8% per IDR Oct 2025 announcement; conforms to federal std deduction.
What is the 2026 Iowa standard deduction?
Iowa conforms to the federal standard deduction ($16,100 single, $32,200 MFJ for 2026 per Rev. Proc. 2025-32).
Does Iowa tax Social Security benefits?
Tax treatment of Social Security varies by state. Iowa's rules can change year-to-year, check the Iowa Department of Revenue for the most current guidance.
What is the difference between federal and Iowa state income tax?
Federal tax is collected by the IRS at uniform rates nationwide (10%-37%). Iowa state tax is separate, with its own brackets and rules. Total income tax burden = federal + state combined.