Student Loan Calculator

Model education debt end-to-end: accrual during grace, capitalization at repayment start, then amortized payoff.

Principal borrowed

Rate

Grace period before payments

Repaid over

years

Monthly payment

$357.15

How the Student Loan Calculator works

The calculation follows the standard method used across the US — no shortcuts, no hidden assumptions. Here is exactly what happens behind the scenes:

Do subsidized loans accrue interest in school?

No — the government covers it. Unsubsidized loans accrue from disbursement, which is why balances jump when grace ends and interest capitalizes.

Extra payments: target principal?

Yes — instruct the servicer to apply extras to principal, not 'future payments', otherwise you gain no interest benefit.