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.

Payment Plan Math in Montana

Montana law sets the maximum interest rate for payment plan agreements at 12% per year under Mont. Code Ann. § 31-1-103. This statute governs the allowable charge on a deferred payment balance, meaning any interest added to a payment plan cannot exceed this annual rate. The calculation applies simple interest on the principal amount owed, not compound interest, so the total finance charge is determined by multiplying the principal by 12% and then by the time period in years. The official source provides the exact statutory language outlining how this rate is applied. The worked example below demonstrates the step-by-step computation. For an estimate tailored to your specific payment plan terms, use the DocketMath calculator.

Governing authority

In Montana, the payment plan math rule is set by Mont. Code Ann. § 31-1-103. The verified packet cites Mont. Code Ann. § 31-1-103 (https://leg.mt.gov/bills/mca/title_0310/chapter_0010/part_0010/section_0030/0310-0010-0010-0030.html).

Montana payment plan math: the verified value is 12% under Mont. Code Ann. § 31-1-103. The verified packet cites Mont. Code Ann. § 31-1-103 (https://leg.mt.gov/bills/mca/title_0310/chapter_0010/part_0010/section_0030/0310-0010-0010-0030.html).

Estimate your own result: every situation has exceptions that can change the outcome. Use the payment plan math 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.