All states

Iowa

Flat rate
Filing status
Income
Pre-tax adjustments
Itemized deductions
Household

Estimated taxes

Tax year 2025
Gross income$0
Total tax$0
Take-home pay$0

Overall effective rate: 0.0%

Federal

Adjusted gross income
$0
Standard deduction
$15,000
Taxable income
$0
Tax before credits
$0
Credits
- $0
Federal income tax
$0
Effective / marginal rate
0.0% / 0.0%

FICA

Social Security
$0
Medicare
$0
FICA total
$0

State — Iowa (IA)

State taxable income
$0
State income tax
$0
State + local tax
$0
Effective / marginal rate
0.0% / 0.0%

Notes

  • Iowa converted to a single FLAT rate of 3.80% for 2025 (Senate File 2442) — no brackets, same rate for every filing status and income level. The graduated brackets used through 2024 are gone.
  • The deduction for FEDERAL INCOME TAX PAID is REPEALED. Iowa formerly let you deduct federal income tax; that deduction is fully phased out by 2025 and is not modelled.
  • The tax base is FEDERAL TAXABLE INCOME (Form 1040 line 15), not AGI. The redesigned IA 1040 now adopts the FEDERAL standard or itemized deduction (line 1d) — Iowa no longer has its own standard deduction.
  • Unlike Colorado, Iowa requires NO state-income-tax addback for federal itemizers, so federal taxable income flows through directly.
  • Low-income exemption: a filer owes $0 when Iowa taxable income (line 4) is at or below $9,000 (single / married filing separately) or $13,500 (married filing jointly / head of household). The higher age-65+ thresholds ($24,000 / $32,000) are NOT modelled (no age field).
  • Not modelled: the optional alternate tax (4.3% on income over a $13,500/$32,000 exclusion, taken only when lower) and IA 1040 Schedule 1 modifications (retirement-income exclusions, U.S. government interest, 529 contributions, bonus-depreciation addbacks, etc.).

Sources

Disclaimer: This is an informational estimate for the 2025 tax year only and is provided on a best-effort basis. It is not tax, legal, investment, or financial advice. Results are approximate, may be inaccurate or out of date, and may not reflect all credits, deductions, phase-outs, or local rules. This site assumes no liability for any decisions made or outcomes resulting from its use. Consult a qualified tax professional before filing or making any decisions.