This page provides general legal information and calculation tools, not legal advice. DocketMath is not a law firm and does not provide legal representation, and using this site does not create an attorney-client relationship. Laws change and exceptions apply, so deadlines and amounts specific to your situation should be confirmed with a licensed attorney in your jurisdiction.

Interest in Montana

In Montana, the legal rate of interest on a money judgment is set by statute at 10% per year. This rate is established under Mont. Code Ann. § 25-9-205, which governs post-judgment interest, and is tied to the rate specified in Mont. Code Ann. § 31-1-106. The interest accrues from the date the judgment is entered until it is fully satisfied. The statute does not provide for a variable or floating rate; the 10% figure is fixed. The worked example below demonstrates how this rate applies to a judgment over time. For an estimate tailored to a specific judgment amount and duration, the DocketMath calculator can compute the total interest due.

Interest calculation example

For a Montana this interest calculation, use the verified rate from the current rule packet: 10%. The verified packet cites Mont. Code Ann. § 25-9-205, § 31-1-106 (https://leg.mt.gov/bills/mca/title_0250/chapter_0090/part_0020/section_0050/0250-0090-0020-0050.html).

Example inputs:

• Principal: $10,000
• Days in calculation period: 365

Calculation:

• Convert the rate to a decimal: 10% = 0.1
• Multiply principal by the rate and the day fraction.
• Example interest: $1,000.00

This example is generated from verified packet facts. Confirm compounding, judgment date, and case-specific accrual before relying on the amount.

Interest calculation example

For a Montana this interest calculation, use the verified rate from the current rule packet: 10%. The verified packet cites Mont. Code Ann. § 25-9-205, § 31-1-106 (https://leg.mt.gov/bills/mca/title_0250/chapter_0090/part_0020/section_0050/0250-0090-0020-0050.html).

Example inputs:

• Principal: $10,000
• Days in calculation period: 365

Calculation:

• Convert the rate to a decimal: 10% = 0.1
• Multiply principal by the rate and the day fraction.
• Example interest: $1,000.00

This example is generated from verified packet facts. Confirm compounding, judgment date, and case-specific accrual before relying on the amount.

Estimate your own result: every situation has exceptions that can change the outcome. Use the interest calculator to estimate your specific figure.

This page provides general legal information and calculation tools, not legal advice. DocketMath is not a law firm and does not provide legal representation, and using this site does not create an attorney-client relationship. Laws change and exceptions apply, so deadlines and amounts specific to your situation should be confirmed with a licensed attorney in your jurisdiction.