How retirement income is taxed
in Montana
Montana taxes retirement income at progressive rates up to 5.9%. Here's what that means for your retirement plan and how to manage it.
Montana's retirement
tax landscape
Social Security is exempt if income is below $25,000 (single) / $32,000 (married). Pensions get a $5,780/$11,560 exclusion. Retirement account withdrawals get a $5,500/$11,000 exclusion 65+.
Understanding how Montana treats each type of retirement income is essential for planning your withdrawals, conversions, and Social Security timing. The interaction between state and federal taxes determines your true after-tax income each year.
What's taxed
and what's not
Here's how Montana treats the major types of retirement income.
Exempt below certain income thresholds. May become taxable above the threshold.
Partially exempt with deductions or exclusions.
Partially exempt or exempt with age requirements.
Qualified distributions are fully exempt at both the state and federal level.
Montana's
tax brackets
Montana uses progressive tax brackets with a top rate of 5.9%. For single filers: 4.7% up to $20,500, 5.9% above $20,500 (single). The standard deduction is $15,750 for single filers and $31,500 for married filing jointly.
Montana has a simple bracket structure. The top rate of 5.9% applies above $20,500 of taxable income. Most retirees land in the lower brackets.
Progressive rates mean each dollar is taxed at its own bracket rate. The marginal rate on the next dollar matters most for planning.
$15,750 single / $31,500 married filing jointly. Income below this threshold is tax-free at the state level.
Strategies to reduce your
Montana tax burden
Managing total income to stay below the $25,000/$32,000 SS exemption threshold is critical. The $5,500/$11,000 retirement exclusion for 65+ provides meaningful relief. Roth conversions before 65 avoid state tax entirely. The generous standard deduction ($15,750/$31,500) shelters significant income. Federal tax planning — withdrawal sequencing and SS timing — drives the primary savings opportunity.
Roth conversions before retirement. Converting traditional IRA balances to Roth during lower-income years means paying Montana tax now at lower rates, then taking tax-free Roth withdrawals later. See the full Roth conversion strategy guide.
Withdrawal sequencing. The order you draw from different accounts each year matters. Drawing from taxable brokerage accounts before tapping tax-deferred accounts can keep your Montana ordinary income lower. Read more in which accounts to withdraw from first.
Social Security timing. Optimizing when you claim Social Security affects both your federal and state tax picture. See when to start Social Security.
Model your Montana
retirement taxes
The interaction between Montana's tax rules and federal taxes is too complex to estimate by hand. A year-by-year projection shows your actual tax burden for every year of retirement.
Drawdown Arc's projection engine includes Montana's full bracket structure, standard deduction, and retirement income exemptions. Set your state to Montana and enter your account balances, pension, and Social Security timing — the projection shows your Montana state tax alongside federal tax for every year.
State tax modeling is a Pro feature. The free calculator shows your full federal tax projection — upgrade to Pro to add Montana (or any of the 50 states) to your model.
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