Debt Management Plan Calculator

Last Updated: July 28, 2026

Use this debt management plan calculator to estimate monthly payment, payoff time, negotiated-rate interest, administration fees, and total savings.

Model a plan that reduces participating interest rates and charges a monthly administration fee.

Debts entering the plan
Debt 1
Debt 2
Debt 3
Proposed plan

Debt Management Plan Formula

The payment applied to enrolled debt is estimated with the amortization formula:

M_debt = P * [r(1 + r)^n] / [(1 + r)^n - 1]
 M_total = M_debt + F_monthly

Total plan outlay is:

C_plan = P + Interest + n * F_monthly

Variables:

  • P is the total balance entering the plan
  • r is the average monthly plan rate
  • n is the payoff term in months
  • F_monthly is the administration fee
  • M_total is the full monthly plan payment

The calculator separately simulates the current debts using their entered rates and payments. It then compares that result with a single planning balance at the average negotiated rate. Payment mode subtracts the monthly administration fee from the chosen total payment before applying the remainder to debt.

Debt Management Plan Payment Reference

The table uses $20,000 of enrolled debt at an average 8% plan rate plus a $35 monthly administration fee.

Plan termTotal monthly paymentAdmin feesInterestTotal outlay
3 years$661.73$1,260.00$2,562.18$23,822.18
4 years$523.26$1,680.00$3,436.41$25,116.41
5 years$440.53$2,100.00$4,331.67$26,431.67

Example Problems

Example 1: Find the payment for a four-year plan.

Three cards total $20,000. The proposed average plan rate is 8%, the term is four years, and the monthly administration fee is $35. The calculator finds the debt payment required over 48 months and then adds $35 to produce the total monthly plan payment.

Example 2: Test a payment budget.

Enter a total payment of $500 and a $35 monthly fee. The calculator applies $465 to debt each month, simulates the declining balance at the plan rate, and reports the payoff time, interest, administration fees, and total outlay.

Frequently Asked Questions

Is a debt management plan a consolidation loan?

Usually not. A plan typically coordinates payments and negotiated terms with participating creditors without issuing a new loan. The debts remain separate even though the consumer may make one plan payment.

Why does the calculator use one plan APR?

Actual programs can negotiate a different rate for each creditor. The average plan APR is a planning simplification. Use a balance-weighted average of the proposed creditor rates when available.

Are monthly fees included in payoff time?

The fee is included in the total amount paid each month but does not reduce debt. In payment mode, the calculator subtracts the fee before applying the remainder to principal and interest.

Debt Management Plan Calculator