Idaho Investment Calculator

Calculate your after-tax investment returns in Idaho including 5.80% state and 15% federal capital gains tax.

Tax considerations for Idaho investors

Federal Capital Gains

0%, 15%, or 20% depending on your income bracket. This calculator uses the 15% middle bracket rate.

Idaho State Tax

5.80% on capital gains.

Combined Rate

20.8% total (15% federal + 5.80% state).

Frequently Asked Questions

What is the capital gains tax rate in Idaho?

Idaho taxes capital gains at 5.80%. This is in addition to federal capital gains tax (0%, 15%, or 20%).

How is this calculator different from the federal calculator?

This calculator automatically adds Idaho's 5.80% state capital gains tax on top of the 15% federal rate, giving you a more accurate after-tax projection.

What return rate should I expect?

Historical S&P 500 returns average 10% annually (7% after inflation). Use 7% for conservative estimates.

When do I pay capital gains tax?

You only pay when you sell. Long-term rates (shown here) apply to investments held over 1 year. Short-term gains are taxed as ordinary income.

Learn More