2025-2026 Tax Year
Transitioned to a flat tax of 3.8% effective Jan 1, 2025-2026.
The calculator first calculates your federal taxes using 2025-2026 tax brackets and standard deductions. It then calculates Iowa state tax by applying the flat rate of 3.80% to your taxable income. Social Security tax (6.2% on first $176,100) and Medicare tax (1.45% on all wages) are also calculated. Your net take-home pay is your gross income minus federal tax, state tax, Social Security, and Medicare.
Federal Tax: Taxable Income = Gross Income - Standard Deduction ($15,750 single, $31,500 married). Tax calculated using progressive brackets (10%, 12%, 22%, 24%, 32%, 35%, 37%).
Iowa State Tax: State Tax = Taxable Income × 3.80%
Social Security: Tax = min(Annual Income, $176,100) × 6.2%
Medicare: Base = Annual Income × 1.45%. Additional = max(0, Annual Income - $200,000 single or $250,000 married) × 0.9%
Net Pay: Net Pay = Gross Income - Federal Tax - State Tax - Social Security - Medicare