How Does the Federal Loan Interest Subsidy Work?

Advertiser Disclosure

Student Loan Hero Advertiser Disclosure

Our team at Student Loan Hero works hard to find and recommend products and services that we believe are of high quality. We sometimes earn a sales commission or advertising fee when recommending various products and services to you. Similar to when you are being sold any product or service, be sure to read the fine print to help you understand what you are buying. Be sure to consult with a licensed professional if you have any concerns. Student Loan Hero is not a lender or investment advisor. We are not involved in the loan approval or investment process, nor do we make credit or investment related decisions. The rates and terms listed on our website are estimates and are subject to change at any time.

Editorial Note: This content is not provided or commissioned by any financial institution. Any opinions, analyses, reviews or recommendations expressed in this article are those of the author’s alone, and may not have been reviewed, approved or otherwise endorsed by the financial institution.

student loan interest subsidy

We’ve got your back! Student Loan Hero is a completely free website 100% focused on helping student loan borrowers get the answers they need. Read more

How do we make money? It’s actually pretty simple. If you choose to check out and become a customer of any of the loan providers featured on our site, we get compensated for sending you their way. This helps pay for our amazing staff of writers (many of which are paying back student loans of their own!).

Bottom line: We’re here for you. So please learn all you can, email us with any questions, and feel free to visit or not visit any of the loan providers on our site. Read less

Americans with student loan debt pay an average of $393 in monthly student loan payment. If you’re a young graduate, that can eat up a big chunk of your starting salary and force you to make tough budgeting decisions.

Some borrowers turn to income-driven repayment (IDR) plans to reduce their monthly bill and get more breathing room. Under some of these plans, the government will cover a portion of the interest you owe.

But that student loan interest subsidy is not available for the entire length of your repayment. Here are some issues you should know about…

Student loan interest subsidy

Depending on your income, your monthly payment under an IDR plan may not be enough to pay off the accrued interest. This is called “negative amortization.”

In this case, the government might cover at least some of your interest for a certain period.

Role of IDR plans

If you can’t afford your federal student loan payments on a 10-year standard repayment plan, an income-driven repayment plan may be a solution. With IDR, the government looks at your discretionary income and family size to determine your monthly payment. Your repayment term is set at 20 or 25 years, depending on your loan. If you qualify, it can result in a significantly lower monthly payment.

However, under an IDR plan, interest continues to accrue. Because the repayment term is longer, interest has more time to add up. You could end up paying thousands more over the duration of your loan. Additionally, if you have a remaining balance on your debt at the end of your loan term, you could be required to pay tax on any amount that was forgiven.

Which loans are eligible?

Only certain types of student loans are eligible for income-driven repayment plans and the interest subsidy.

The following loan types are eligible:

Direct PLUS loans for parents are eligible if you consolidate them into a direct consolidation loan.

Check with Federal Student Aid on eligibility for federal Stafford loans from the Federal Family Education Loans (FFEL) program, FFEL PLUS loans, FFEL consolidation loans and federal Perkins loans.

You cannot access the interest subsidy if you have private student loans.

IDR plans and the student loan interest subsidy

Borrowers taking advantage of three of four IDR plans are eligible for a student loan interest subsidy:

How much interest the government covers varies by plan.


If your monthly payment doesn’t cover the interest, the government will pay all the interest on your subsidized loans — including the subsidized portion of a direct consolidation loan — for up to three consecutive years. After, it will cover 50% of the interest throughout your term.

For example, if your monthly interest charges are $40 but your payment only covers $25, the government will pay the $15 difference for the first three years. After that, it will pay $7.50 (half).

If you have unsubsidized loans, the government will pay half of the remaining interest during your loan term.

Any borrower with eligible federal loans can qualify for REPAYE. Undergraduates get a 20-year repayment term, while graduate students get 25 years. You’ll generally pay 10% of your discretionary income.


If you have loans in a PAYE or IBR plan, the student loan interest subsidy works differently.

When your monthly payment does not cover the interest on your subsidized loans, the government will pay your remaining interest for up to three consecutive years. You’ll be on the hook for any interest that accrues after those three years.

If you have unsubsidized loans, the government will not cover any of the interest. If you leave either plan or no longer qualify to make income-based payments, your interest will capitalize.

You get a 20-year repayment term under the PAYE plan. With IBR, it’s 20 to 25 years — depending on when you took out your loans. With both plans, you typically pay 10% of your discretionary income, though it can be 15% with an IBR plan if your loans were disbursed before July 2014. You’ll never pay more than what you would under a standard repayment plan.

Income-contingent repayment (ICR)

For borrowers on an income-contingent repayment plan, your loans are not eligible for the student loan interest subsidy.

With ICR, your repayment plan term is 25 years. You’ll pay the lesser of 20% of your discretionary income or what you would on a fixed repayment plan over 12 years (adjusted for income).

How to apply for an IDR plan

Like most programs that provide financial relief, you’ll need to apply to get an IDR plan.

Borrowers can apply through Federal Student Aid for free. Private companies can help, but they may charge a fee.

After your initial application, your work isn’t done. Participants are required to recertify every year and resubmit updated information about their income and family. If you don’t, you could lose your benefits, and your payments could go back to the amount you owed under the 10-year repayment schedule, potentially costing you a lot of money.

To know when it is time to recertify, set a reminder in your calendar or smartphone.

Understanding your IDR plan terms

Managing your student loans, particularly when you’re on an IDR plan, can be confusing and overwhelming. Understanding the terms of your loan and repayment plan are essential to paying off your debt.

The student loan interest subsidy can provide aid to those struggling to keep up with their payments. When the government chips in for interest charges, borrowers can save money and free up cash flow. Before choosing an IDR plan, evaluate all your repayment options and select the one that best fits your financial situation.

Alli Romano contributed to this report.

Published in Student Loan Repayment

You're on your way...

You are being redirected to where you’ll be able to fill out an online form. Based on your creditworthiness, you may be matched with up to five different personal loan lenders in our partner network.