Discretionary-income percentage
The IBR percentage depends on whether you meet the federal definition of a new borrower.
Legacy Income-Driven Plan | 2026 Eligibility Rules
Understand the 10% or 15% formula, Standard-payment cap, 20/25-year horizon, FFEL eligibility, and when IBR still beats newer alternatives.
Federal loans only · Annual income update · Payment cap applies · Borrower keeps FSA credentials
Income-Based Repayment (IBR) remains a major federal student loan option in 2026, but eligibility now depends heavily on when your loans were disbursed. For qualifying older Direct and FFEL loans, IBR generally sets payments at 10% or 15% of discretionary income, caps the required payment at the 10-year Standard amount, and provides a 20- or 25-year general forgiveness horizon. This guide explains the formula, loan-date rules, marriage effects, interest subsidy, PSLF fit, Parent PLUS exception, and when RAP deserves a side-by-side comparison.
01 / QUICK ANSWER
The IBR percentage depends on whether you meet the federal definition of a new borrower.
IBR generally measures discretionary income above 150% of the applicable poverty guideline.
The IBR payment will not exceed the applicable 10-year Standard Repayment Plan amount used for the cap.
New borrowers generally use 20 years; other IBR borrowers generally use 25 years.
Federal Student Aid’s current IDR FAQ and IDR request control the eligibility and formula rules. Use the current IDR FAQ and Repayment Calculator before acting.
02 / THE 2026 GATE
Eligible Direct and FFEL loans can still qualify. Older borrowers may have a real IBR-vs.-RAP decision.
If a borrower receives a new loan on or after the cutoff, current Federal Student Aid guidance can make RAP the only IDR option for the Direct Loan portfolio.
Original Parent PLUS loans are not eligible for IBR. Current federal guidance shows a narrow transition pathway for certain Parent PLUS debt consolidated before July 1, 2026 after at least one ICR payment before July 1, 2028. That is a history-specific exception, not a general Parent PLUS rule.
03 / PAYMENT ENGINE
Use the income information accepted under the current federal IDR process.
The applicable guideline depends on family size and residence. The remainder is IBR discretionary income.
The percentage depends on whether the borrower satisfies the federal IBR new-borrower definition.
The monthly amount will not exceed the applicable 10-year Standard Repayment Plan amount used for the IBR ceiling.
If income increases substantially, IBR’s payment ceiling can become one of the most important differences in a RAP-vs.-IBR comparison. A first-year payment comparison alone can miss that future-income effect.
04 / HOUSEHOLD EFFECTS
The IBR calculation generally uses combined income. Spouse federal student-loan information can also matter to the allocation of an income-driven payment.
The federal calculation generally uses the borrower’s individual income. That does not mean separate filing is automatically the better tax decision.
We can model student-loan repayment implications using the filing statuses you want compared. We do not tell a borrower how to file a tax return or provide individualized tax advice.
Read Federal Student Aid marriage guidance ↗05 / BALANCE BEHAVIOR
Current federal-servicer guidance says that when the calculated IBR payment does not cover all monthly interest on eligible subsidized loans, the government can cover the remaining unpaid interest during the first three consecutive years.
That does not mean every IBR balance is protected from growth forever. Loan type, subsidy eligibility, the payment amount, and time in the plan all matter.
RAP uses a different interest structure and can also provide a principal benefit, which is why older eligible borrowers should compare more than the first monthly payment.
See How RAP Handles Interest06 / LONG-TERM PATH
General IBR horizon when the federal July 1, 2014 new-borrower definition is satisfied.
General IBR horizon for borrowers who do not meet the newer-borrower definition.
IBR can be used with PSLF on eligible Direct Loans when every PSLF requirement is met.
A forgiveness horizon is not the same thing as a promise of forgiveness. The borrower must remain on an eligible path, satisfy the applicable payment and program rules, and preserve records. Tax treatment can also change over time and is outside FedRepay’s tax-advice scope.
Review My PSLF Strategy07 / THE REAL 2026 DECISION
The best comparison uses the same income, household assumptions, loan portfolio, and forgiveness goal for both plans.
Open the Full RAP vs. IBR Comparison08 / DECISION SCREEN
09 / DECISION PROCESS
Record loan type, disbursement date, current plan, servicer, consolidation history, and any Parent PLUS history. Start with StudentAid.gov rather than assumptions from an old statement.
Check whether the loans fall before the July 1, 2026 cutoff and whether each loan type can actually use IBR. Mixed portfolios require special care.
Identify whether you meet the federal new-borrower definition tied to July 1, 2014. That changes both the percentage and the general repayment period.
Use the Federal Student Aid Repayment Calculator with current income, family size, marital/tax information, and actual loan records when possible.
Compare the required payment, Standard payment cap, repayment horizon, interest treatment, PSLF strategy, total projected cost, and future-income sensitivity.
IBR requires annual updating of income and family information. Save confirmations, notices, payment histories, and the account-specific recertification date.
Use StudentAid.gov or the official servicer process. If the tradeoffs remain unclear, get individualized analysis before changing plans or consolidating loans.
Use StudentAid.gov and the official Repayment Calculator.
Get individualized analysis and a written Strategy Summary.
Add a Roadmap™, implementation guidance, document review, and support.
10 / FREQUENTLY ASKED QUESTIONS
IBR is a federal income-driven repayment plan for eligible Direct and FFEL Program loans. Payments are generally 10% or 15% of discretionary income, depending on borrower status, and are capped at the applicable 10-year Standard Repayment Plan amount.
IBR generally applies to eligible Direct and FFEL Program loans disbursed before July 1, 2026. Parent PLUS loans are not eligible, and consolidation loans with Parent PLUS history require special review under the current transition rules.
IBR generally takes 10% or 15% of discretionary income and divides the annual amount by 12. Discretionary income is the amount by which adjusted gross income exceeds 150% of the applicable poverty guideline. The required payment is capped at the applicable 10-year Standard amount.
Federal Student Aid treats a borrower as a new borrower for IBR when the applicable July 1, 2014 conditions are satisfied, including having no outstanding Direct or FFEL balance at the relevant point when obtaining a new loan on or after that date. New borrowers generally use the 10% formula and 20-year horizon.
IBR does not use RAP’s $10 monthly floor. Depending on income, family size, and other calculation inputs, the official income-driven estimate can be very low and may be $0. Use the Federal Student Aid Repayment Calculator for the account-specific estimate.
Yes. The IBR payment will never be more than the amount used for the applicable 10-year Standard Repayment Plan cap. That feature can become important when a borrower’s income rises.
The general IBR repayment period is 20 years for qualifying new borrowers and 25 years for other IBR borrowers before remaining eligible balance may be forgiven, assuming the required qualifying repayment conditions are satisfied.
Yes. IBR is the income-driven repayment plan that can directly cover eligible FFEL Program loans. That makes IBR especially important for some legacy borrowers considering whether consolidation is actually necessary.
Original Parent PLUS loans are not eligible for IBR. Current federal guidance shows a narrow transition pathway for certain Parent PLUS debt consolidated before July 1, 2026 after at least one ICR payment before July 1, 2028, so those histories should be reviewed individually.
Federal Student Aid generally uses joint income when married borrowers file a joint federal tax return and individual income when they file separately. Tax filing decisions can affect much more than student loans, so FedRepay does not provide tax-return advice.
For eligible subsidized loans, current federal-servicer guidance says the government can cover 100% of remaining unpaid interest for the first three consecutive years when the calculated IBR payment does not cover all monthly interest.
IBR can be used for qualifying PSLF payments on eligible Direct Loans when the borrower also satisfies the employment, payment, form, and other PSLF requirements. FFEL loans do not become PSLF-eligible merely because they are on IBR.
Neither is universally better. IBR has a 150%-of-poverty formula, Standard payment cap, and 20- or 25-year general horizon. RAP uses a different AGI-band formula, a $10 minimum, a 30-year general horizon, and different interest and principal benefits. Compare both only after confirming eligibility.
Yes. Income-driven repayment requires annual updating of the information used to calculate the payment. Confirm the specific recertification date in StudentAid.gov or with the official servicer and keep records of the submission.
Use the official Federal Student Aid repayment process and current IDR request through StudentAid.gov. FedRepay can help analyze options and review borrower-completed information within the purchased scope, but the borrower keeps the FSA credentials and submits through the official channel.
This page was source-reviewed against current federal materials on August 25, 2026. Program guidance can change.
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