IBR Calculator: Estimate Student Loan Repayment

The Income-Based Repayment Plan is one of the original Income-Driven Repayment (IDR) options. It remains one of the most secure from legal attacks because it was created by Congress, along with the Public Service Loan Forgiveness program.

If the SAVE Plan is eliminated under a potential Trump administration and no replacement plan is introduced, borrowers can still turn to the IBR Plan to keep their monthly payments affordable.

The IBR Plan is best for

  • Borrowers looking to switch from the SAVE Plan.

  • Full-time government and nonprofit employees working towards PSLF.

  • People who owe a lot of student loan debt compared to their annual income.

  • Parent PLUS Loan borrowers who used the double consolidation loophole to get into the SAVE Plan.

Use our Income-Based Repayment Calculator to estimate your monthly student loan payments.

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Eligibility and Qualification

To qualify for the Income-Based Repayment Plan, you must have a federal student loan and show a partial financial hardship (PFH). This means your monthly payment under IBR would be less than what you’d pay under the 10-year Standard Repayment Plan.

Parent PLUS Loans don’t qualify directly but can become eligible if consolidated using the double consolidation loophole.

Use the calculator to quickly check if your income and loan balance make you eligible for IBR.

Additional Context for the IBR Calculator

Partial Financial Hardship

To qualify for IBR, you must demonstrate a Partial Financial Hardship. Simply put, compare your monthly payment under the Standard 10-Year Repayment Plan to your estimated IBR payment. If your IBR payment is lower, you meet the PFH requirement.

Borrowers with higher incomes and relatively small loan balances may not qualify, even if they feel financially stretched due to expenses. Many people mistakenly think there’s a strict income cap based on poverty guidelines, but this isn’t the case. For a deeper explanation, check out our guide on IBR and Partial Financial Hardships.

Parent PLUS Loans

Parent PLUS borrowers who used the double consolidation process to access the SAVE Plan may also open the door to other IDR plans, including IBR. The outcome depends on ongoing SAVE litigation, but the principle behind double consolidation is to unlock broader repayment options.

Avoid consolidating all Parent PLUS loans into a single loan—double consolidation is key. For detailed guidance, see our Parent PLUS Loans and Income-Driven Repayment article.

Filing Taxes Jointly vs. Separately

The trade-off here is straightforward: Filing separately may lower your IBR payment but could result in higher overall taxes. Some borrowers file separately, use that tax return to calculate payments, and then amend their filing back to “joint” afterward. Although it can be a bit complicated, this method is allowed under IRS and Department of Education rules.

Income Fluctuations

Your IBR payment isn’t locked in for a year—it adjusts anytime your income decreases. For example, if you start the year making $80,000 but cut back to $40,000 after having a child, you can recalculate your payments immediately. Use the calculator to estimate how changes in income or family size might impact your monthly payment.

Tax Implications for Forgiveness

Currently, all federal student loan forgiveness is tax-free through the end of 2025. Beyond that, forgiven balances may result in federal or state tax liabilities. Your preparation strategies include setting aside savings or planning for exclusions if your liabilities outweigh your assets. See our article on Tax Implications of Student Loan Forgiveness for more details.

Repayment Servicers

Servicers like Navient, Nelnet, and MOHELA all follow the same federal formula to calculate IBR payments. If your servicer provides incorrect calculations, consider working with a student loan ombudsman to resolve discrepancies.

Income Benchmarks

For example, if you earn $60,000 annually, your discretionary income might be $25,000 (after subtracting the poverty line). Under IBR, you’d pay 15% of that, or about $3,750 annually ($312.50 per month). For more details, see our Income-Based Repayment Chart.

Switching Plans

Switching between IDR plans generally doesn’t reset your forgiveness timeline, except in cases like moving between SAVE and IBR. For example, borrowers with only undergraduate loans may move from a 20-year timeline under SAVE to a 25-year timeline under IBR if SAVE is eliminated.

Consolidation

Consolidating loans typically resets progress toward forgiveness unless you qualify for exceptions like the one-time account adjustment. Current rules apply a weighted average of prior qualifying payments, but future policies remain uncertain. For more, check out our Guide to Consolidation and Forgiveness.

Calculator Accuracy

Federal student loans are complex, with dynamic repayment variables like plan changes, deferments, and policy updates. Our calculator accurately captures your current monthly payment and long-term estimates. For more detailed modeling, try the U.S. Department of Education’s Loan Simulator on StudentAid.gov.

IBR Calculator FAQs

How much does IBR cost?

The total cost of IBR depends on your monthly payments over time, including accumulated interest, and whether you qualify for forgiveness. Use the calculator to estimate your monthly payment and the long-term repayment cost, factoring in potential loan forgiveness after 20-25 years.

How do I calculate my IBR payment?

Your IBR payment is based on 15% of your discretionary income, divided by 12 to get a monthly payment. Discretionary income is your adjusted gross income minus 150% of the poverty guideline for your household size and state. Use the calculator to estimate your payment, or learn more about the calculation process in our article: How is Income-Based Repayment Calculated?

What’s the difference between discretionary income and AGI?

Adjusted Gross Income (AGI): Your total income minus adjustments like retirement contributions or student loan interest deductions. This is reported on your tax return. Discretionary Income: Your AGI minus 150% of the poverty guideline for your household size and state. This is the number used to calculate your monthly payment amount.

Can I use this calculator if I’m self-employed or have a fluctuating income?

Yes. You need to document your income during its lowest period for the most accurate IBR estimate. The IBR application allows you to submit proof of income reflective of your current situation instead of relying solely on historical tax returns.

What happens if I don’t qualify for IBR?

If you don’t qualify this is because: You don’t have a Partial Financial Hardship: Look into other plans like Income-Contingent Repayment, Extended Repayment, or Graduated Repayment. You have the wrong type of loan: Consider consolidating eligible loans into a Direct Consolidation Loan to access IBR. But, if you have private student loans, you cannot qualify for IBR or any IDR plan.

How does IBR compare to other IDR plans like SAVE or PAYE?

IBR is one of the original IDR plans and remains a fallback if SAVE or PAYE isn’t available. For a detailed breakdown of the differences, check out our comparison table below.

IBR vs Other IDR Plans

Feature

IBR

SAVE

PAYE

ICR

1. Monthly Payment Calculation

15% of discretionary income

5% (undergrad) or 10% (graduate loans) of discretionary income

10% of discretionary income

20% of discretionary income or fixed 12-year repayment adjusted for income

2. Discretionary Income Definition

Income above 150% of the poverty guideline

Income above 225% of the poverty guideline

Income above 150% of the poverty guideline

Income above 100% of the poverty guideline

3. Eligibility for New Borrowers

Available to all Direct Loan borrowers with PFH

Available to all Direct Loan borrowers

Requires borrowing after Oct. 1, 2007, and a Direct Loan disbursement after Oct. 1, 2011

Available to all Direct Loan borrowers, including Parent PLUS (if consolidated)

4. Parent PLUS Loan Eligibility

Yes, but only if consolidated through double consolidation

Yes, but only if consolidated through double consolidation

Yes, but only if consolidated through double consolidation

Yes, but only via consolidation into a Direct Loan

5. Forgiveness Timeline

25 years (graduate loans); 20 years (undergrad loans, if SAVE unavailable)

20 years (undergraduate loans); 25 years (graduate loans)

20 years for most borrowers

25 years

6. Interest Subsidy

None

Covers unpaid interest for borrowers with payments below accruing interest

None

None

7. Income Recertification

Annually

Annually

Annually

Annually

8. Best For

Borrowers with higher debt-to-income ratios

Borrowers seeking lowest payments and interest subsidies

Newer borrowers with high debt and lower incomes

Borrowers with consolidated Parent PLUS loans

IBR Calculator Estimate Accuracy

Federal student loans are unlike any other type of consumer lending. They involve countless variables—program changes, deferments, consolidations, and shifting repayment plans—that can drastically alter your loan’s costs and timeline over time. Unlike fixed loans like mortgages or car loans, student loans are dynamic and adapt to your circumstances.

Our calculator is designed to help you understand your immediate monthly payment options. It can estimate longer-term scenarios, but most borrowers experience changes throughout repayment, such as pauses, plan adjustments, or policy updates, which may impact your total costs and repayment timeline.

For a more comprehensive analysis, consider using the U.S. Department of Education’s Loan Simulator on StudentAid.gov to supplement your estimates. Both tools provide valuable insights, but real-world repayment often includes twists and turns calculators can’t predict.

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