Tax-Deferred Payments (TDP) Calculators

Calculating your TDP deduction. Determine how long it will take to pay off your TDP with the calculator on the left. Use the calculator on the right to determine your payment amount. Use your Member Billing Statement to determine the cost to buy service.

How long it will take to pay off your TDP agreement

Determine your payment amount

Number of payments to pay off:  Payment amount: 
Divide the number of payments by your number of pay periods per year to see how many years it would take to pay off your agreement. This amount is based on 21 pay periods and factors in 8 percent interest applied to your balance on June 30 each year.