Iowa 2024 Income Tax Rates. The top income tax rate is currently 5.7% and would phase down to a flat 3.9% in 2026 under current law. The biden administration approved the 2021 american rescue plan, which expanded the child tax credit that year to $3,600 per child younger than 6, and $3,000.

Updated for 2024 with income tax and social security deductables. If the net estate of the decedent, found on line 5.