PSLF calculator: what actually gets forgiven
Public Service Loan Forgiveness wipes out whatever is left after 120 qualifying payments, tax-free. So the only question that matters is how little you can pay between now and then. Enter your numbers and see it.
Formulas current as of August 2026. (corrected 10 Aug: principal top-up is capped at your payment)
How PSLF math actually works
PSLF is different from every other forgiveness track, and the difference changes what you should optimise for.
- The finish line is fixed at 120 qualifying payments — ten years of them. Your plan's own forgiveness timeline (20, 25, or 30 years) is irrelevant, because you'll be done long before it arrives.
- Whatever remains is forgiven, and it is not taxed. Unlike long-term IDR forgiveness, which became federally taxable again in 2026, PSLF forgiveness is tax-free by separate statute.
- So every dollar you don't pay is a dollar that gets forgiven. That inverts the normal instinct. Paying extra toward principal is actively counterproductive — it shrinks the balance that would have been wiped out for free.
Which is why the strategy reduces to one line: get into a qualifying plan and make the payment as small as the rules allow. Both RAP and IBR qualify. The calculator above shows which one is smaller across your remaining months, and how much more gets forgiven as a result.
The three things that sink PSLF claims
1. A payment count that isn't what you think
Most borrowers earned no PSLF credit during the SAVE litigation forbearance, and plenty are discovering they're a year or two behind where they assumed. Pull the official number from StudentAid.gov before planning around it. If a meaningful block of forbearance months is at stake and you already have 120 months of qualifying employment, look into PSLF Buyback, which can convert some of those months retroactively.
2. Landing in a non-qualifying plan
The 10-year Standard plan technically qualifies, but Graduated and Extended do not — and if you ignore your SAVE exit notice, auto-enrollment can drop you into one of those. Every payment made there buys you nothing. See what happens if you do nothing.
3. Employment certification you never filed
File the PSLF employment certification form now, and again every year, and again whenever you change jobs. Reconstructing employment history five years later — from an employer that reorganised, was acquired, or closed — is where people genuinely lose PSLF after doing everything else right.
A trap the calculator will flag
If your balance is small relative to your income, you may finish paying the loan off before reaching payment 120. In that case PSLF forgives nothing, and the ten years of paperwork bought you no benefit. When the projection shows that, it's worth asking whether PSLF is the right strategy for you at all, or whether you're simply repaying a loan with extra steps.