TaxFacetTaxFacet

Montana Capital Gains Tax Calculator (2025)

Calculate federal and Montana capital gains tax on stocks, real estate, and investments. See short-term, long-term, and NIIT rates for Montana residents.

$
$
$

Total Capital Gains Tax

$10,450

20.90%

Effective CG Rate

Net After Tax

$39,550

Federal CG Tax

$7,500

MT State Tax

$2,950

Summary

Your total capital gains tax is $10,450 (20.90% effective rate) on $50,000 in gains.

Long-term gains: $50,000 at 15% — 15.00% blended federal rate.

No NIIT applies — your income is below the $200,000 MAGI threshold for your filing status.

Montana taxes capital gains at 5.90% effective rate, adding $2,950 to your total tax.

Net After Tax: $39,550
Fed LTCG

3 rows

Tax ComponentTax AmountEffective Rate
Federal Long-Term CG Tax$7,50015.00%
Montana Capital Gains Tax$2,9505.90%
Total Capital Gains Tax$10,45020.90%

Estimated federal and Montana capital gains tax. Excludes wash sale rules, 1031 exchanges, qualified opportunity zones, and state-specific exclusions. Not tax advice.

Related Calculators

Montana State Income TaxMontana PaycheckMontana Bonus TaxMontana Self-Employment TaxMontana Retirement Income TaxMontana Sales Tax