You do not have to pay unsubsidized loans while in school. As long as you’re enrolled at least half-time in an eligible program, your Direct Unsubsidized Loans are automatically placed in in-school deferment, and no monthly payment is due. The catch is that interest still accrues from the day the money is disbursed, and the federal government does not cover it for you the way it does with subsidized loans.1eCFR. 34 CFR 685.202 – Charges for Which Direct Loan Program Borrowers Are Responsible Every dollar of interest you skip during school gets added to what you owe once repayment begins.
When Payments Actually Become Required
Two things have to happen before a bill shows up. First, you have to leave school or drop below half-time enrollment. Half-time generally means at least six credit hours per semester for undergraduates, though each school sets its own threshold and reports enrollment status to the Department of Education. Deferment continues automatically until you graduate, withdraw, or fall below that line.
Second, the six-month grace period after separation has to run out. During those six months you still owe no required payments, but interest keeps accruing. The grace period is designed to give you time to find work before your first bill arrives, and it generally applies only once per loan. If you use the full six months and then re-enroll, your loans go back into deferment, but leaving school a second time usually will not reset the grace clock on those same loans. Returning to school before the original grace period runs out can preserve eligibility for a fresh six-month window after your next separation.
For loans first disbursed between July 1, 2025, and June 30, 2026, the fixed rate is 6.39% for undergraduates and 7.94% for graduate and professional borrowers.2Federal Student Aid. Interest Rates and Fees Each year’s loan keeps its original rate for life, so the number attached to a freshman-year loan doesn’t change even if later rates do.
What Happens to the Interest You Don’t Pay
Interest on a Direct Unsubsidized Loan accrues daily. Your servicer multiplies your current principal by the interest rate and divides by 365.25 to get the daily charge.3Edfinancial Services. Payments, Interest, and Fees Borrow $10,000 at 6.39%, and daily interest runs about $1.75 — roughly $53 a month. That charge builds quietly the entire time you’re in school, whether you look at your account or not.
When the grace period ends and repayment officially starts, any unpaid interest that piled up during school and grace is added to your principal. This is called capitalization.1eCFR. 34 CFR 685.202 – Charges for Which Direct Loan Program Borrowers Are Responsible Once capitalized, that interest becomes part of your new principal, and you start paying interest on it too.
A concrete example makes the effect visible. Borrow $20,000 in unsubsidized loans at 6.39% and attend school for four years without making any payments. By the time your grace period ends, roughly $5,600 in interest has accumulated. After capitalization your new principal is about $25,600, and daily interest is now calculated on that higher figure. Over a 10-year standard repayment plan, that capitalized interest generates its own additional interest charges, meaningfully increasing what you pay over the life of the loan.
Capitalization can also be triggered later by other events. Consolidating your federal loans into a Direct Consolidation Loan causes unpaid interest to capitalize immediately.4Federal Student Aid. 5 Things to Know Before Consolidating Federal Student Loans Switching between certain repayment plans can trigger it as well. Each event resets your principal to a higher baseline.
Should You Pay Anyway?
You can make payments on your unsubsidized loans at any time while you’re in school, and federal student loans carry no prepayment penalty.5Federal Student Aid. Repaying Your Loans Covering just the monthly interest — about $53 per $10,000 borrowed at 6.39% — keeps your principal flat, so you enter repayment owing what you originally borrowed and nothing extra.
The math on this is meaningful. Paying roughly $53 a month on a $10,000 loan across four years costs about $2,544 in interest. Skipping those payments lets approximately $2,800 in accrued interest capitalize onto your principal, and you then pay additional interest on that inflated balance for the next 10 years. The longer you’re in school, the wider the gap.
Partial payments help too. Covering half the monthly interest means less capitalizes, and your future monthly bill will be smaller as a result. To make a payment, log in at studentaid.gov to find which servicer holds your account; most servicers let you make one-time payments or set up recurring transfers.
How Your Payment Is Applied
Federal regulations require servicers to apply a payment in a fixed order: outstanding fees or collection costs first, then accrued interest, then principal.6eCFR. 34 CFR 685.211 – Miscellaneous Repayment Provisions Because interest is knocked down before principal, a payment equal to your monthly accrual keeps the balance from growing. Anything above that starts reducing what you originally borrowed.
The Tax Deduction Is Available Now, Too
Interest you pay on federal student loans — including voluntary payments made while still enrolled — may qualify for the student loan interest deduction, worth up to $2,500 per year. You don’t have to itemize; it’s an adjustment to income on your return. For the 2025 tax year, the deduction phases out between $85,000 and $100,000 of modified adjusted gross income for single filers, and between $170,000 and $200,000 for joint filers, disappearing above the upper limits.7Internal Revenue Service. Publication 970, Tax Benefits for Education
If you pay $600 or more in interest during the year, your servicer sends Form 1098-E.8Internal Revenue Service. Form 1098-E Student Loan Interest Statement You can still claim the deduction under $600; the servicer just isn’t required to send the form. Keep your own payment records either way.
When the Deferment Ends
Once the six-month grace period runs out, active repayment begins. The default is the standard 10-year plan with fixed monthly payments and a $50 minimum.9GovInfo. 34 CFR 685.208 – Fixed Payment Repayment Plans Your actual bill depends on your balance and rate. Alternatives include graduated repayment, extended repayment of up to 25 years for balances above $30,000, and income-driven plans that tie payments to income and forgive remaining balances after 20 or 25 years of qualifying payments. For new loans disbursed after July 1, 2026, current income-driven plans are being replaced by a new Repayment Assistance Program.
Before you graduate, withdraw, or drop below half-time, your school is required to provide exit counseling that walks through your balance, estimated monthly payments, plan options, and the consequences of missing payments.10Office of the Law Revision Counsel. 20 USC 1092 – Institutional and Financial Assistance Information for Students If you leave without completing it, the school must send the materials to you. You can also complete exit counseling online at studentaid.gov.