IDR payment is a monthly bill amount calculated by your income, not by how much you borrowed

IDR stands for Income-Driven Repayment. It is a way to pay back federal student loans based on what you earn each month, rather than a fixed amount tied to your loan balance. The payment can be as low as $0 per month if your income is below a certain threshold, and it rises or falls as your income changes. After you make payments for 20 to 25 years (depending on the plan), any remaining balance is forgiven.

IDR is different from the standard 10-year repayment plan, which charges the same amount every month regardless of income. If you earn less than the standard payment would cost, or if your income fluctuates, IDR can lower your monthly bill. The trade-off is that you pay interest on the unpaid balance while you are in the plan, so you may pay more total interest over time.

Key Takeaways

  • IDR calculates your monthly payment as a percentage of your discretionary income—usually 10 to 20 percent depending on which plan you choose.
  • Your payment can drop to $0 if your income is low enough, and you must recertify your income every year to keep the payment accurate.
  • Interest accrues on any unpaid balance, and unpaid interest can capitalize (get added to your principal) if you are not on a plan that prevents it.
  • After 20 to 25 years of payments, any remaining loan balance is forgiven, though forgiven amounts may be taxable as income.
  • You must enroll in an IDR plan through your loan servicer; it does not happen automatically when you graduate or leave school.

The four IDR plans and how they differ

The U.S. Department of Education offers four income-driven repayment plans. Each calculates your payment differently and has different forgiveness timelines.

Revised Pay As You Earn (REPAYE) charges 10 percent of your discretionary income and forgives the balance after 25 years. It is open to all borrowers with federal loans. Unpaid interest does not capitalize if you are paying at least the accrued interest each month, which protects you from balance growth.

Pay As You Earn (PAYE) also charges 10 percent of discretionary income and forgives after 20 years, but it is only open to borrowers who took out their first federal loan on or after October 1, 2007, and who borrowed as an undergraduate. Unpaid interest does not capitalize as long as you are making payments.

Income-Based Repayment (IBR) charges 10 to 15 percent of discretionary income depending on when you took out your first loan. Forgiveness happens after 20 or 25 years. Unpaid interest can capitalize if you are not paying enough to cover it each month.

Income-Contingent Repayment (ICR) is the oldest plan and charges the highest percentage—up to 20 percent of discretionary income. It forgives after 25 years and is the only plan available to borrowers with Parent PLUS loans (though Parent PLUS loans must be consolidated into a Direct Consolidation Loan first). Unpaid interest capitalizes regularly.

How discretionary income is calculated

Your IDR payment is based on discretionary income, which is your adjusted gross income (AGI) minus 150 to 225 percent of the federal poverty line for your family size and state. The exact percentage depends on which IDR plan you choose.

For example, if you are single and your AGI is $35,000, and the federal poverty line for a single person is $14,580, then your discretionary income under REPAYE would be $35,000 minus (150% × $14,580) = $35,000 − $21,870 = $13,130. Your monthly payment would be 10 percent of that divided by 12 months, or about $109.

You report your income using your most recent tax return when you enroll. If your income changes during the year, you can update it with your servicer, and your payment will recalculate. You must recertify your income every year, usually by submitting a new tax return or income statement to your servicer.

Interest accrual and capitalization under IDR

Interest on federal student loans accrues daily, meaning it grows every single day. Under IDR, if your monthly payment is lower than the interest that accrues that month, the unpaid interest can be added to your principal balance—a process called capitalization.

For example, if your loan balance is $50,000 at 5 percent interest, about $208 in interest accrues each month. If your IDR payment is $150, the unpaid $58 gets added to your balance. Over time, this means you owe more than you borrowed.

REPAYE and PAYE prevent unpaid interest from capitalizing as long as you are making your scheduled payments. IBR and ICR do allow capitalization. If you are on IBR or ICR and your payment does not cover the monthly interest, ask your servicer about paying the accrued interest separately to stop it from being added to your balance.

Recertification and what happens if you miss it

Every year, your loan servicer will ask you to recertify your income. This means submitting proof of your current earnings—usually your most recent tax return, a pay stub, or a statement from your employer. If your income has changed, your payment adjusts up or down.

If you do not recertify by the deadline, your loan will be moved off the IDR plan and placed on the standard 10-year repayment plan. Your monthly payment will jump to whatever the standard amount is for your loan balance, which is often much higher than your IDR payment. You can ask your servicer to move you back to IDR, but you will need to submit the missing income documentation.

Set a calendar reminder for your recertification deadline each year. Most servicers send a notice 60 to 90 days before the deadline, but it is easy to miss if you have moved or changed email addresses.

Loan forgiveness and tax consequences

After you make payments for 20 to 25 years on an IDR plan (depending on which plan), any remaining balance is forgiven. You no longer owe the money. However, the forgiven amount may be treated as taxable income by the IRS, which means you could owe federal income tax on it.

For example, if you have paid $100,000 over 25 years and your remaining balance is $80,000, that $80,000 may be added to your taxable income for that year. If you are in the 22 percent tax bracket, you could owe roughly $17,600 in taxes on the forgiven amount.

Some states do not tax forgiven student loan debt, but most do. Check your state's tax rules or speak with a tax professional before the forgiveness happens so you can plan for the tax bill. Some borrowers set aside money each year to cover the eventual tax liability.

When to choose IDR instead of standard repayment

IDR makes sense if your monthly income is low relative to your loan balance, or if your income is unpredictable. If the standard 10-year payment would be more than 10 to 15 percent of your gross income, IDR will lower your monthly bill.

IDR also works well if you expect your income to rise significantly over time. Your payment grows with your income, so you pay less early on and more later. This can help you manage cash flow when you are starting out in your career.

However, IDR is not the right choice if you can afford the standard payment and want to pay off your loans quickly. You will pay more interest overall, and you will carry the debt longer. If you can pay off your loans in 10 years or less, the standard plan is usually cheaper.

Frequently Asked Questions

Can my IDR payment really be zero?

Yes. If your discretionary income is zero or negative—meaning your AGI is below 150 to 225 percent of the poverty line—your payment can be $0. You must still enroll in the plan and recertify your income each year. Interest will still accrue on your loans, but you are not in default as long as you are enrolled and recertifying.

What happens to my IDR payment if I get married?

If you are married and file taxes jointly, your spouse's income counts toward your discretionary income calculation, which usually raises your payment. If you file separately, only your income counts, but filing separately has other tax consequences. Talk to a tax professional before changing your filing status.

Can I switch from IDR back to standard repayment?

Yes. You can change plans at any time by contacting your loan servicer. If you switch away from REPAYE or PAYE, any unpaid interest that was not capitalized will be added to your balance. If you switch back to IDR later, you start fresh with a new recertification.

Do Parent PLUS loans work with IDR?

Parent PLUS loans can only use Income-Contingent Repayment, and only after the loans are consolidated into a Direct Consolidation Loan. The payment is calculated differently than for other IDR plans and is usually higher. Parent PLUS borrowers should explore consolidation and ICR only if the standard repayment plan is unaffordable.

What if I stop making IDR payments?

If you miss a payment, your loan enters delinquency. After 90 days of missed payments, the default is reported to credit bureaus. After 270 days, your loan is in default and the government can garnish your wages or tax refunds. Stay in contact with your servicer if you cannot make a payment; they may be able to adjust your plan or pause payments temporarily.