Mortgage Interest Deduction in Montana
State income tax rate
5.65%
Itemized deductions allowed
✅ Yes
State-Level Mortgage Interest Deduction
Montana has a top rate of 5.65% and conforms to federal itemized deductions. Mortgage interest is deductible on Montana returns.
Combined Federal + Montana Savings
If you paid $18,000 in mortgage interest last year and itemize on both returns, your combined tax savings would be approximately:
- Federal (22% bracket): $3,960
- Montana (5.65% rate): $1,017
- Total estimated savings: $4,977
These are estimates based on a 22% federal bracket. Your actual savings depend on your specific tax situation.