State tax rates and rules for income, sales, property, estate, and other taxes that impact retirees. Go to Retiree Tax Map Montana Add to State Compare List | View List View State Compare List (0) selected | Compare up to 5 The Bottom Line Tax-Friendly Sales taxes are at the root of Montana's tax-friendly ranking. The Treasure State is one of five states that don't impose a general state sales tax. That's the good news.The bad news is that Montana taxes virtually all forms of retirement income, including Social Security. The state allows a pension- and annuity-income exemption, but this tax break is subject to certain income limitations. So, for wealthier retirees, the state's income tax hits hard.On the property-tax front, rates are modest, on average, and any homeowner or renter 62 or older with total household income of less than $45,000 can apply for a refundable income tax credit worth up to $1,000. Income Tax Range Low: 1% (on up to $3,100 of taxable income)High: 6.9% (on taxable income over $18,700) Taxation of Social Security Benefits Social Security benefits are taxable. The method used to calculate the taxable amount for Montana income tax purposes is similar to the method used for federal returns. However, there are important differences. As a result, the Montana taxable amount may be different than the federal taxable amount. Tax Breaks for Other Retirement Income For 2020, up to $4,370 of income from a retirement plan (including 401(k) plans and IRAs) is exempt for taxpayers with federal adjusted gross income of $38,605 or less ($40,790 or less for joint filers). If married, each spouse can claim the exemption.In addition, taxpayers age 65 or older can exclude up to $800 ($1,600 for joint filers) of interest income.Railroad Retirement benefits are also exempt. Sales Tax No state sales tax. Resort areas such as Big Sky, Red Lodge and West Yellowstone have local sales taxes. Real Property Taxes In Montana, the median property tax rate is $831 per $100,000 of assessed home value. Any homeowner or renter 62 or older can apply for a refundable income tax credit worth up to $1,000 if they have lived in Montana for nine months, occupied a residence for six months and have a total household income of less than $45,000. Annual Car Taxes and Fees An annual vehicle registration tax based on the car's age and value is imposed. Additional local taxes may apply. Estate and Inheritance Taxes No estate or inheritance tax.