PLUS Loan's 4.228% Fee vs a Private Loan: The $1,360 Cost Gap on $10K
A 2026-27 federal Parent PLUS loan runs 9.07% interest plus a 4.228% origination fee deducted from every disbursement — on $10,000 needed over 10 years, that's about $1,360 more than an 8% private loan with no fee. See where your own credit-based rate flips the math.
The fee that gets missed comparing headline rates
We ran a common scenario through the calculator: $10,000 needed in hand, the 2026-27 federal Parent PLUS rate of 9.07% with its 4.228% origination fee, against an 8% private parent loan with no fee. On the surface the rate gap looks modest — about 1 point. But the origination fee is deducted from every disbursement, which means a parent who needs $10,000 in hand actually has to borrow $10,441 from the PLUS program to net that amount. Combined with the higher rate, the PLUS loan costs about $1,360 more over a 10-year term — even though its headline rate isn't dramatically higher.
That gap flips fast, though: a parent with limited or damaged credit facing a 15% private rate finds PLUS clearly cheaper, fee and all — federal PLUS loans don't check credit score, only adverse credit history (recent delinquencies, bankruptcy), which is why they exist as a backstop in the first place.
How the math works
Gross principal borrowed = amount needed ÷ (1 − origination fee rate) — this nets exactly the cash amount needed after the fee is deducted from disbursement, matching how PLUS fees are actually assessed. Both loans are then amortized as standard fixed-rate installment loans over the repayment term to get monthly payment and total cost.
Default PLUS figures (9.07% rate, 4.228% fee) are the 2026-27 federal reference numbers, fixed for the life of the loan. Since July 1, 2026, new PLUS loans also carry a $20,000/year and $65,000 lifetime cap per student under the One Big Beautiful Bill Act, and can only use the new standard repayment plan (terms up to 25 years depending on balance) — narrower repayment options than PLUS loans had before that date.
Math runs locally. Inputs never leave your browser.Source on github.
Where this calculation doesn't apply
- Federal protections matter more than raw cost.PLUS loans offer death/disability discharge and deferment options a private loan doesn't — for a family without other financial cushion, that insurance value can outweigh a modest cost difference.
- The new annual/lifetime PLUS caps bind.If the amount needed exceeds $20,000/year or the family's $65,000 lifetime cap (for loans after July 1, 2026), the remaining gap has to come from a private loan regardless of which option is individually cheaper.
- The parent has excellent credit.A parent who qualifies for a private loan well under 6% may find the private option cheaper even accounting for PLUS's fee-adjusted comparison — get real quotes rather than assuming.
- The student, not the parent, is the better borrower.If the student has room left in federal Direct Loan limits, borrowing there first is usually cheaper and carries the borrower's own future IDR/forgiveness options — PLUS and private parent loans are both a last resort after that.
What to actually do
- Confirm the student has exhausted federal Direct Loan limits in their own name before considering either parent-loan option.
- Get 2-3 real private-loan quotes based on the parent's actual credit — don't assume a rate.
- Check current PLUS annual/lifetime caps at studentaid.gov, since they apply regardless of which option is cheaper.
- Weigh the federal protections (death/disability discharge, deferment) against the pure cost difference, not just the dollar total.
- If PLUS is chosen, budget for the origination fee explicitly — it's easy to underestimate how much more than the "amount needed" actually gets borrowed.