Every borrowing decision for college funnels into one question: federal, private, or both? The mechanics are simpler than the marketing makes them look. Federal loans have fixed rates set by Congress, fees skimmed off the top, and a stack of repayment protections. Private loans are underwritten like a car loan, priced on your credit, and almost bereft of those protections. Here's the full comparison with current numbers, plus the one scenario where private clearly wins.
Federal student loans come from the Direct Loan program. Your rate doesn't depend on your credit history: Congress pegs it each year to the May 10-year Treasury auction, and every eligible borrower in that year pays the same. For loans disbursed between July 1, 2026 and June 30, 2027, that's 6.52% for undergrad Direct loans, 8.07% for grad Direct, and 9.07% for PLUS. Rates are fixed for life, and the loans carry borrower protections written into law.
Private student loans come from banks, credit unions, and online lenders. The rate is whatever your credit (and usually a cosigner's) supports. As of August 2026, advertised fixed APRs started around 3.6% for the strongest applicants and ran past 15% at the top of the market, with the average 10-year fixed near 9.1%. There's no forgiveness program, no income-driven repayment, and hardship help is whatever the lender chooses to offer.
| Feature | Federal Direct | Private |
|---|---|---|
| 2026-27 rate | 6.52% (undergrad) / 9.07% (PLUS) | ~3.6%–16%+ by credit |
| Rate type | Fixed only | Fixed or variable |
| Origination fee | 1.057% (4.228% PLUS) | Usually none |
| Cosigner needed | No | Yes for ~9 in 10 undergrads |
| Income-driven repayment | Yes (RAP caps at 1-10% of AGI from July 2026) | No |
| Forgiveness (PSLF/IDR) | Yes | No |
| Hardship deferment | Legal right in set cases | Lender discretion |
| Credit check to borrow | None for Direct undergrad | Full underwriting |
The rate is only half the price of a loan. The other half is what happens when life goes sideways. Federal loans let you switch to an income-driven plan if your income drops, pause payments through qualified deferment or forbearance, and pursue Public Service Loan Forgiveness if you work in government or nonprofits. RAP, the newest income-driven plan, caps payments between 1% and 10% of adjusted gross income with a $10 monthly floor and forgives remaining balances on a 20-to-30-year horizon.
None of that exists in the private market. If you lose a job, you're negotiating with a lender whose generosity is optional. That flexibility is worth real money, and it's why the standard advice holds even in years when the federal rate looks high: take subsidized and unsubsidized Direct loans to the limit before signing anything private.
More than people think, and it quietly raises the federal cost. Fees come out of the disbursement, but you repay the full amount you borrowed. At the 1.057% Direct fee, a $20,000 tuition bill needs $20,213.66 of debt. At the PLUS 4.228% fee, it needs $20,882.93. Private lenders mostly charge nothing upfront, so a private offer 0.3 points above a PLUS rate can still lose on total cost. Run both sides through the federal vs private student loan calculator with fees included; sticker APRs hide this.
Enter the cash you actually need and see monthly payment, total repaid, and the lifetime difference side by side.
Open the Federal vs Private Calculator →Two situations, honestly. First: you've maxed out federal Direct loans and still have a gap. You don't have a federal option left except PLUS, so private competes directly against a 9.07% rate with a 4.228% fee. With a creditworthy cosigner, beating that is very doable. On $20,000 over ten years, a private loan at 8.50% saves about $2,083 versus PLUS.
Second: parents with excellent credit comparing Parent PLUS against a parent private loan in their own name. Same math as above applies. What parents give up is the PLUS safety net (deferment while the student is enrolled, and the possibility of income-contingent repayment), so the interest savings need to be real, not cosmetic.
What doesn't happen: undergrads with strong credit "saving money" by skipping the 6.52% Direct loan for a 6% private one. That trade gives up income-driven repayment and forgiveness for $0.52 points. It's almost never worth it, and once you refinance federal into private, there's no road back.
Around nine in ten private loans to undergraduates carry one, and the cosigner is fully liable for the balance. If the student can't pay, the lender comes for the cosigner, and a default damages both credit files. Some lenders offer cosigner release after 24-48 months of on-time payments, but approval rates on those applications are modest. Treat cosigning as borrowing the money yourself, because functionally you are.
Before refinancing existing federal debt, run the numbers both ways with the student loan refinance calculator — savings need to compensate for the protections you permanently surrender. And if you're weighing total borrowing against future earnings, the college ROI calculator frames the decision from the other end.
Yes, always. The FAFSA is free and it's the only door into federal grants, work-study, and Direct loans. Many state grants and school scholarships also require it. You can decline every loan offered and still take a private one later, but federal aid can't be restored retroactively if a private loan goes bad.
Federal rates aren't priced on your credit at all. Congress sets them each year from the May 10-year Treasury auction, and every eligible borrower gets the same number. Private lenders price on credit, so a borrower with strong credit and a cosigner can come in below the federal rate while a borrower with thin credit pays several points above it.
Much less than with federal loans. Private hardship programs are lender discretion, typically a few months of interest-only payments, and there's no income-driven option or forgiveness. Miss payments and the loan defaults fast, usually after 90 to 120 days, and your cosigner's credit takes the same hit. This is the real cost of the private rate you signed for.
When the parents' credit is strong. PLUS loans run 9.07% in 2026-27 with a 4.228% origination fee, which turns $20,000 of need into $20,883 of debt. A private loan at 8.50% with no fee saves about $2,083 over ten years on that amount. Compare real offers against PLUS, not against the 6.52% undergrad rate your student gets.