Iowa capital gains tax calculator
Iowa taxes capital gains on top of federal tax: 3.8% flat rate.
Calculate my Iowa taxYour details
Your tax estimate
| Capital gain | $50,000 |
| Federal long-term rate | 15.0% |
| Federal CGT | $7,500 |
| Total federal tax | $7,500 |
| Iowa (3.8%) | $1,900 |
| Total tax | $9,400 |
| Net gain after tax | $40,600 |
What you would pay in Iowa
Long-term gains (assets held more than a year) for a single filer with $75,000 of other income:
| Gain | Federal + NIIT | Iowa | Total tax | You keep |
|---|---|---|---|---|
| $25,000 | $3,750 | $950 | $4,700 (18.8%) | $20,300 |
| $50,000 | $7,500 | $1,900 | $9,400 (18.8%) | $40,600 |
| $100,000 | $15,000 | $3,800 | $18,800 (18.8%) | $81,200 |
| $250,000 | $42,250 | $9,500 | $51,750 (20.7%) | $198,250 |
Short-term vs long-term gains in Iowa
Sell within a year and the federal government taxes the gain as ordinary income. On a $50,000 gain with the same income, that means $12,964 of tax if you sell short-term against $9,400 if you hold past one year, a difference of $3,564.
How we estimate Iowa tax
3.8% flat rate. Where a state taxes gains as ordinary income on a sliding scale, the calculator applies the rate shown above to the whole gain, so for most people it is an upper estimate. Local and city income taxes are not included.
*Examples use 2026 IRS brackets, the standard deduction and the 3.8% Net Investment Income Tax. Change your filing status, income and holding period in the calculator above for your own figure.
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