Federal student loan interest rates for the upcoming school year aren't decided by Congress, the Department of Education, or your college's financial aid office. They are decided by the bond market.
On May 12, 2026, the U.S. Treasury will hold its monthly auction of 10-year notes. The yield from that single auction will lock in the interest rate on every new federal student loan disbursed between July 1, 2026 and June 30, 2027. If your student is heading to college this fall and plans to borrow, the rate they pay for the next 10 to 25 years of repayment is being decided tomorrow. Here's what families need to know before the gavel falls.
Why a Treasury Auction Sets Student Loan Rates
A 2013 federal law tied federal student loan interest rates to the 10-year Treasury note yield. The thinking was simple: when the government's own borrowing costs rise or fall, student loan rates should track them. The result is a formula, not a vote.
The formula adds a fixed margin on top of the 10-year Treasury yield from the May auction:
- Direct Subsidized and Unsubsidized Loans (undergraduate): Treasury yield plus 2.05 percentage points
- Direct Unsubsidized Loans (graduate): Treasury yield plus 3.60 percentage points
- Direct PLUS Loans (parents and grad students): Treasury yield plus 4.60 percentage points
Federal rates also have caps they cannot exceed: 8.25% for undergraduate loans, 9.50% for graduate loans, and 10.50% for PLUS loans.
Once a federal student loan is issued, the rate is fixed for the life of the loan. Whatever percentage your family locks in for the 2026-27 school year stays with that loan, even decades later.
What 2026-27 Rates Are Likely to Look Like
The 10-year Treasury yield has been moving in the low 4% range through early 2026. If the May 12 auction lands at roughly 4.2%, the new rates would look something like this:
- Undergraduate Direct Loans: about 6.27%
- Graduate Direct Unsubsidized Loans: about 7.82%
- Parent PLUS and Grad PLUS Loans: about 8.82%
Those numbers are projections, not guarantees. Treasury yields move every day based on inflation data, Federal Reserve decisions, and global investor demand. The actual auction result could come in higher or lower.
For comparison, here are the current 2025-26 rates:
- Undergraduate Direct Loans: 6.39%
- Graduate Direct Unsubsidized Loans: 7.94%
- Parent PLUS and Grad PLUS Loans: 8.94%
If the projection holds, undergraduate borrowers could see roughly a 0.12 percentage point drop. On a $5,500 freshman-year loan, that translates to about $40 saved over a standard 10-year repayment plan. Helpful, but not life-changing. The bigger story for 2026-27 is not the rate. It is the structural change in what families can borrow at all.
When Will the New Rates Be Confirmed?
The auction happens on May 12. Official rates are usually announced by the Department of Education within a few weeks and appear in the Federal Register by late May or early June. Loans first disbursed on or after July 1, 2026 carry the new rate.
If your student already has a financial aid offer listing a federal loan, the package itself does not lock in a rate. The rate is set when the loan is actually disbursed in late summer.
How OBBBA Changes the 2026-27 Borrowing Picture
The new rates do not arrive in a vacuum. Starting July 1, 2026, the One Big Beautiful Bill Act (OBBBA) reshapes federal student lending in ways that matter more than the rate itself for many families:
- Parent PLUS loans are capped at $20,000 per year and $65,000 lifetime per dependent student
- Grad PLUS loans are eliminated for new graduate borrowers, with a three-year grandfather window for current students
- Aggregate federal borrowing limits for graduate and professional students are now $100,000 and $200,000 respectively
- The SAVE repayment plan is officially gone, replaced by the new Repayment Assistance Plan (RAP) for borrowers who take out loans on or after July 1, 2026
For families who were planning to lean on Parent PLUS or Grad PLUS to cover a gap, the rate is almost beside the point. The amount you can borrow is what changes. We walked through the full picture in our breakdown of the OBBBA final rules.
What Your Family Should Do Before July 1
There are a few smart moves to make in the next several weeks while the rate is being set and OBBBA is taking effect.
Borrow the subsidized loan first
Direct Subsidized Loans for undergraduate students with financial need are the cheapest federal option. The government pays the interest while your student is in school at least half-time, during the six-month grace period after graduation, and during deferment. Even a slightly higher interest rate is offset by the in-school interest subsidy.
Use unsubsidized federal loans before private loans
Direct Unsubsidized Loans come with borrower protections that private loans usually do not match: income-driven repayment plans, deferment for hardship, and access to forgiveness programs like Public Service Loan Forgiveness. A private lender might offer a lower headline rate to a borrower with a strong cosigner, but the trade-offs in protection are real and important.
Run the numbers on Parent PLUS versus a private parent loan
With the Parent PLUS rate likely landing near 8.82% for 2026-27 and a 4.228% origination fee on top, well-qualified parents may find a private parent loan cheaper at the same loan amount. The downside: private loans rarely offer income-based repayment or hardship deferment for parents who lose a job. The cheaper rate can become a much harder loan if life changes. We compare the trade-offs in our private loan certification guide.
File or update the FAFSA if you have not already
The 2026-27 FAFSA is open and processing in one to three days for most applicants. Roughly five million families have already submitted. Without an active FAFSA on file, your student cannot receive a federal loan at the new rate, period. If you have not started, submit your FAFSA this week.
Re-read your award letter for borrowing assumptions
Many financial aid offers list federal loans at the current 2025-26 rate. The actual rate will be slightly different by the time the loan disburses. If your award letter shows a $5,500 unsubsidized loan, your student will receive $5,500 minus the 1.057% origination fee regardless of the rate. The rate only changes how much your family pays back over time, not how much arrives at the school.
A Note on Variable-Rate Confusion
Federal student loans are fixed-rate. The rate is set once when the loan is disbursed, and it never changes again. Families sometimes confuse this with the annual rate-setting process and worry that their existing loans will adjust upward each year. They will not.
If your student borrowed in 2024-25 at 6.53%, that loan stays at 6.53% even after the May 12 auction sets a different number for new loans. Only loans disbursed on or after July 1, 2026 will carry the new 2026-27 rate.
What If Rates Come in Higher Than Expected?
Treasury yields can move quickly when economic data surprises the market. If the May 12 auction comes in noticeably higher than the early-2026 trend, undergraduate rates could end up flat or slightly above current levels rather than falling.
Even in that case, federal loans remain the right starting point. The federal rate caps still apply, the borrower protections still attach, and the in-school interest subsidy on subsidized loans still saves real money. A higher rate makes it more important to borrow only what you truly need, not less important to use federal loans first.
The Bigger Picture for College Borrowing in 2026
The May 12 auction is one piece of a turbulent year for college finance. Tuition is rising again at most schools, federal borrowing limits are tightening, and a brand-new repayment system is rolling out. The most important thing your family can do is build a borrowing plan that does not depend on hoping rates will fall.
Federal Direct Loans should be the foundation for student borrowing. Parents should think hard about how much PLUS debt they truly want to carry into retirement, especially with the new $65,000 lifetime cap forcing tighter math. Private loans should be a last resort, used only after federal options are exhausted and only with a clear view of what protections you give up.
If you are still mapping out how to pay for next year, create your free CollegeLens plan and we will walk through the numbers with you, factoring in the new rates, OBBBA caps, and your family's actual ability to pay.
The Treasury can set the rate. You set the strategy.
Sravani at CollegeLens