Discretionary Income — Smart Financial Analysis
Calculate your discretionary income for student loan payments and financial planning with federal poverty guidelines.
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Discretionary income for student loans is your Adjusted Gross Income (AGI) minus a protected amount based on the federal poverty line. Discretionary income (for student loans) is AGI minus the poverty-based protected amount—a specific federal formula. IDR plans include SAVE (5% undergrad, 225% poverty protection), PAYE and IBR (10%, 150% protection), and ICR (20%, 100% protection). The 2024 federal poverty guideline for a single person in the contiguous 48 states is $15,060.
Ready to run the numbers?
Why: Discretionary income for student loans is your Adjusted Gross Income (AGI) minus a protected amount based on the federal poverty line. The protected amount varies by repayment p...
How: Enter Adjusted Gross Income ($), Family Size, State to get instant results. Try the preset examples to see how different scenarios affect the outcome, then adjust to match your situation.
Run the calculator when you are ready.
💰 Example Scenarios — Click to Load
Your Information
Income Breakdown
Discretionary by Income Level
Student Loan Payment by Plan
Income Quintile Comparison
For educational purposes only — not financial advice. Consult a qualified advisor before making decisions.
💡 Money Facts
Discretionary Income analysis is used by millions of people worldwide to make better financial decisions.
— Industry Data
Financial literacy can increase household wealth by up to 25% over a lifetime.
— NBER Research
The average American makes 35,000 financial decisions per year—many can be optimized with calculators.
— Cornell University
Globally, only 33% of adults are financially literate, making tools like this essential.
— S&P Global
Discretionary income determines your student loan payments under income-driven repayment plans — it's your AGI minus 150% of the federal poverty line. Under the new SAVE plan, only 5% of discretionary income goes to undergraduate loans. A $50K earner pays just $71/mo instead of $300+ on the standard plan. This calculator computes your discretionary income for all IDR plans.
📚 Official Sources
📖 How Discretionary Income Works
Your AGI from your tax return (line 11 of Form 1040) is reduced by a protected amount based on family size and state. The protected amount equals the federal poverty guideline × the plan multiplier (100% for ICR, 150% for IBR/PAYE, 225% for SAVE).
Discretionary Income = AGI − (Poverty Guideline × Multiplier)
Monthly Payment = (Discretionary × Plan %) ÷ 12
🎯 SAVE vs IBR: Which Is Better?
SAVE Plan (Recommended)
225% poverty protection, 5% undergrad payment rate. Lowest payments for most borrowers.
IBR / PAYE
150% poverty protection, 10% payment rate. Widely available for older borrowers.
📅 When to Recalculate
- • Annual recertification — Required for all IDR plans
- • Income drop — Request recalculation for lower payments
- • Family size change — New child or dependent affects poverty guideline
- • Marriage/divorce — Filing status changes the calculation
✅ $0 Payment Eligibility
If your AGI is at or below the protected amount (poverty × multiplier), your discretionary income is $0 and your monthly payment is $0. SAVE's 225% protection makes $0 payments more common for lower earners.
👫 Spouse Income
If you file taxes jointly, your spouse's income is included in AGI. Filing separately excludes spouse income from SAVE, IBR, and PAYE—but may increase your tax burden. ICR always includes spouse income.
🗺️ Alaska & Hawaii
Poverty guidelines are higher in Alaska (~25%) and Hawaii (~15%). Residents get more protected income, which lowers discretionary income and monthly payments.
❓ Frequently Asked Questions
What is discretionary income?
Discretionary income for student loans is your Adjusted Gross Income (AGI) minus a protected amount based on the federal poverty line. The protected amount varies by repayment plan: SAVE uses 225%, IBR/PAYE use 150%, and ICR uses 100% of the poverty guideline. This determines your monthly payment under income-driven plans.
What is the difference between discretionary and disposable income?
Discretionary income (for student loans) is AGI minus the poverty-based protected amount—a specific federal formula. Disposable income is your take-home pay after taxes and essential expenses. They are different: a $50K earner might have $17K discretionary income for SAVE but only $3K disposable after rent and bills.
How is discretionary income used for student loans?
Income-driven repayment (IDR) plans base your monthly payment on a percentage of discretionary income: SAVE charges 5% for undergraduate loans, IBR/PAYE charge 10%, and ICR charges 20%. Your servicer uses your AGI and family size to calculate this annually.
What are IDR plans and how do they differ?
IDR plans include SAVE (5% undergrad, 225% poverty protection), PAYE and IBR (10%, 150% protection), and ICR (20%, 100% protection). SAVE is the most generous. Eligibility depends on loan type and when you borrowed.
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