Published: December 21, 2025
The Panic Moment
You logged in. You saw the confirmation number. You know you sent them money.
But when you check the dashboard today, the number isn’t lower. It’s higher.
You aren’t crazy, and this usually isn’t a banking error. It is a specific, brutal mechanism of student loan math that catches millions of borrowers off guard.
Here is why your money seems to be disappearing.
The “Daily Interest” Trap

Most debts (like credit cards) calculate interest monthly. Federal student loans calculate interest daily.
Every single day, a tiny amount of money is added to your pile. If you owe $30,000 at 6%, your loan grows by roughly $4.93 every morning.
The Math Problem: If your monthly payment is $100, but your loan grew by $150 in interest that month, your payment didn’t even cover the growth.
- The bank takes your $100.
- It pays off $100 of the interest.
- The remaining $50 of interest stays there.
- Result: You paid money, but you now owe $50 more than you did last month.
This is technically called Negative Amortization. In plain English: You are treading water while the tide rises.
The “Capitalization” Event

This is the second most common reason for a sudden spike.
Normally, unpaid interest sits in a separate pile from your main loan (Principal). It’s annoying, but it doesn’t compound.
However, if you trigger a Capitalization Event, the lender takes that separate pile of interest and dumps it into your Principal. Now, you are being charged interest on your interest.
Common Triggers:
- Leaving a deferment or forbearance period.
- Missing a deadline to recertify your income-driven plan.
- Consolidating your loans.
If you recently exited a “pause” on payments, your balance likely jumped because all that back-interest just became official debt.
The 2025 SAVE Plan Confusion
Note for 2025 Borrowers: If you are on the SAVE plan (or stuck in the legal limbo surrounding it), the rules are currently chaotic.
Under the original SAVE rules, the government was supposed to cover any extra interest so your balance wouldn’t grow.
The Reality: Due to ongoing court injunctions and processing delays, many servicers are showing accrued interest that should theoretically be waived but hasn’t been yet.
- What you see: A growing balance.
- What it might be: A display error or a “holding pattern” while the courts decide the legality of the subsidy.
Action Plan
- Check Your “Allocation”: Log into your servicer (MOHELA, Nelnet, etc.) and find the “Payment History” tab. It will show exactly how much of your payment went to Interest vs. Principal.
- Find the “Daily Rate”: Look for a field labeled “Daily Interest Accrual.” Multiply that by 30. If that number is higher than your monthly payment, your balance will grow mathematically.
- Don’t Panic Pay: If you are pursuing forgiveness (PSLF or IDR), a growing balance often does not matter. You are taxed on the timeline (10, 20, or 25 years), not the final amount.
This article is for general information only and reflects publicly available student loan rules as of December 2025.

Sarah Johnson is an education policy researcher and student-aid specialist who writes clear, practical guides on financial assistance programs, grants, and career opportunities. She focuses on simplifying complex information for parents, students, and families.



