Lesson 16 of 25 · 7 min

How repayment works on a plan loan

Plan-loan interest that returns to the same account is still a cash-flow clock the month must find.

Repayment of a plan loan is an installment against the pledged account. Rules vary by plan; a reader's own plan belongs with a qualified professional. Invented figures continue from lesson 15: $18,500 at 8.5 percent for 60 months. The payment is $379.56. Five years of the exact installment total $22,773.35. The formula is the same PMT identity: r = 0.085/12, n = 60, P = $18,500.

Interest on a plan loan is typically paid to the same account, not to an outside lender. That is a routing of the interest leg, not a benefit to chase. The $379.56 still has to leave some other cash on the same date. Track 1 lesson 1 continued: the pledge is the vested account; the installment is the cash-flow clock that services the pledge. Where the interest arrives after it is paid does not retire the month's need to find $379.56.

First-month interest is $18,500 × 0.085 ÷ 12 = $131.04. Principal in that first payment is $379.56 − $131.04 = $248.52. The $131.04 is the amount that, on a typical plan, is credited back to the same account. The $248.52 is the amount that reduces the $18,500. Both figures are parts of a cash amount that the month must produce. The destination of the interest does not change the source.

Interest that returns to the same account is still a cash-flow clock. The month finds $379.56. The account receives the interest leg. Those are two postings, not a canceled obligation.

Key terms

Plan-loan installment: The fixed monthly amount that retires the plan loan. On these figures, $379.56 for 60 months.
Interest returned to the account: The typical routing of the interest leg: paid by the participant, credited to the same plan account. A mechanism, not a reason to take the loan.
Cash-flow clock: The month's need to produce the installment, regardless of where the interest leg is then posted.

Worked example

Sixty remainders, interest routed back

Invented plan. $18,500 at 8.5 percent for 60 months. Rules vary by plan; a reader's own plan belongs with a qualified professional.

Monthly rate r: 0.00708333
Installment: $379.56
Total of 60 payments: $22,773.35
First-month interest: $131.04
First-month principal: $248.52

The month must find $379.56. The interest leg typically returns to the same account. The cash-flow clock is the $379.56, not the routing.

Check yourself

An invented plan loan of $14,200 at 7.9 percent for 48 months has an installment of $346.00. What is the total of 48 payments, and what is the first-month split?

Plan-loan interest that returns to the same account is still a cash-flow clock: the month must find $379.56, the everyday version of an installment against pledged collateral, Track 1 lesson 1 continued. Open What collateral actually is →

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Educational only. Nothing in this lesson is investment, legal or tax advice, or a recommendation to enter into any transaction. Figures are illustrative and computed from the inputs stated in the lesson.