Aisha K.
Mar 12, 2026
Clean layout and the results update instantly. Exactly what I needed for a quick planning check.
Loans & Debt Management
Income-Driven Student Loan Calculator
Inputs
0500000
112
520
0500000
015
Smart analysis
Recommendations
Tailored to your live inputs and result—guidance only, not professional advice.
- Interpret
Treat this as a planning estimate
Primary result: Estimated IDR payment = $302.29. Re-run with optimistic and pessimistic inputs to understand the range—not just a single point.
Scenario studio
Compare A vs B
Capture two sets of inputs on this device, then see which outcome wins. Share either scenario with a link.
Scenario A
Adjust inputs, then capture this slot.
Scenario B
Adjust inputs, then capture this slot.
Plain-English guide
Terms & how it works
Confused by a field? Read the short definitions here while you use the tool.
AGI
The “AGI ($)” value used in this tool’s formula. Adjust it to see results update live.
Family size
The “Family size” value used in this tool’s formula. Adjust it to see results update live.
Percent of discretionary income
The “Percent of discretionary income” value used in this tool’s formula. Adjust it to see results update live.
Loan balance
Starting amount owed before this period’s payments.
Average rate (%)
The “Average rate (%)” value used in this tool’s formula. Adjust it to see results update live.
- agi
AGI ($)
The “AGI ($)” field. Default 68000; typical range 0–500000.
- loanBalance
Loan balance ($)
The “Loan balance ($)” field. Default 35000; typical range 0–500000.
Discretionary income = AGI − 150% of the 2026 HHS 48-state FPL. Monthly IDR = discretionary × percent ÷ 12, capped at the 10-year standard payment.
Estimate an IBR/PAYE-style payment from AGI, household size, and a discretionary-income percent. Capped by a 10-year standard payment if you enter the balance.
How this calculator works
Estimate an IBR/PAYE-style payment from AGI, household size, and a discretionary-income percent. Capped by a 10-year standard payment if you enter the balance. Discretionary income = AGI − 150% of the 2026 HHS 48-state FPL. Monthly IDR = discretionary × percent ÷ 12, capped at the 10-year standard payment. Scenario: AGI $68,000, family of 2, 10% IDR → discretionary is AGI minus 1.5× FPL; payment is that slice ÷ 12 unless the 10-year standard is lower.
Discretionary income = AGI − 150% of the 2026 HHS 48-state FPL. Monthly IDR = discretionary × percent ÷ 12, capped at the 10-year standard payment.
Scenario: AGI $68,000, family of 2, 10% IDR → discretionary is AGI minus 1.5× FPL; payment is that slice ÷ 12 unless the 10-year standard is lower.
When to use this Income-Driven Student Loan
Common use cases
- Estimate an IBR/PAYE-style payment from AGI, household size, and a discretionary-income percent. Capped by a 10-year standard payment if you enter the balance.
- Sanity-check with this scenario: AGI $68,000, family of 2, 10% IDR → discretionary is AGI minus 1.5× FPL; payment is that slice ÷ 12 unless the 10-year standard is lower.
- The relationship is: Discretionary income = AGI − 150% of the 2026 HHS 48-state FPL. Monthly IDR = discretionary × percent ÷ 12, capped at the 10-year standard payment.
Localized examples
- Loans & Debt Management: the example on this page uses the same formula as the widget.
What you get
- Fields: AGI ($), Family size, Percent of discretionary income, Loan balance ($)
- Discretionary income = AGI − 150% of the 2026 HHS 48-state FPL. Monthly IDR = discretionary × percent ÷ 12, capped at the 10-year standard payment.
- Scenario on the page: AGI $68,000, family of 2, 10% IDR → discretionary is AGI minus 1.5× FPL; payment is that slice ÷ 12 unless the 10-year standard is lower.
How to Calculate Income-Driven Student Loan
- 1Enter AGI ($), Family size, Percent of discretionary income, then the remaining fields. Use the values you have, not a catalog average, unless that is all you know.
- 2Discretionary income = AGI − 150% of the 2026 HHS 48-state FPL. Monthly IDR = discretionary × percent ÷ 12, capped at the 10-year standard payment.
- 3Scenario: AGI $68,000, family of 2, 10% IDR → discretionary is AGI minus 1.5× FPL; payment is that slice ÷ 12 unless the 10-year standard is lower.
- 4Use it to compare habits, not to book a retirement party. Change one assumption and see which year moves.
Governing formula
Discretionary income = AGI − 150% of the 2026 HHS 48-state FPL. Monthly IDR = discretionary × percent ÷ 12, capped at the 10-year standard payment.
AGI $68,000, family of 2, 10% IDR → discretionary is AGI minus 1.5× FPL; payment is that slice ÷ 12 unless the 10-year standard is lower.
AGI $68,000, family of 2, 10% IDR → discretionary is AGI minus 1.5× FPL; payment is that slice ÷ 12 unless the 10-year standard is lower.
Variable definitions
- agi
AGI ($)
The “AGI ($)” field. Default 68000; typical range 0–500000.
- familySize
Family size
The “Family size” field. Default 2; typical range 1–12.
- discretionaryPercent
Percent of discretionary income
The “Percent of discretionary income” field. Default 10; typical range 5–20.
- loanBalance
Loan balance ($)
The “Loan balance ($)” field. Default 35000; typical range 0–500000.
- interestRate
Average rate (%)
The “Average rate (%)” field. Default 6.5; typical range 0–15.
- Compounding here (Discretionary income = AGI − 150% of the 2026 HHS 48-state FPL. Monthly IDR = discretionary × percent ÷ 12, capped at the 10-year standard payment.) assumes the deposit and the return you typed. Jobs, taxes, and a bad decade are not in the slider.
- Nothing here is uploaded for the calculation itself.
Frequently Asked Questions
Discretionary income = AGI − 150% of the 2026 HHS 48-state FPL. Monthly IDR = discretionary × percent ÷ 12, capped at the 10-year standard payment.
Related calculators
Loans & Debt Management
- Emergency Fund & Runway PlannerEmergency fund planner with a life-shock simulator: job loss, medical bill, rent hike, or partner income gone.
- Roth Conversion Tax CalculatorEstimate the extra 2026 federal tax from a Roth conversion and how much room is left in your current bracket. State tax is not included.
- Social Security Claiming Age CalculatorTurn your SSA statement FRA benefit into a monthly check at 62, FRA, or 70 using official early-reduction and delayed-retirement credits.
- RSU Vest Tax CalculatorEstimate federal tax when RSUs vest and compare it to the 22% supplemental withholding most brokers take.
- Layoff Runway and COBRA CalculatorWalk cash, severance, unemployment, and COBRA month by month to see how long essentials stay covered after a job loss.
- Medicare IRMAA CalculatorLook up 2026 Part B and Part D IRMAA from MAGI (usually the return from two years prior) and see what a Roth conversion would do to the premium.
Next in Money milestones
Keep going with related planners
These tools share the same journey — use them together for better decisions.
- Emergency Fund & Runway PlannerEmergency fund planner with a life-shock simulator: job loss, medical bill, rent hike, or partner income gone.
- Roth Conversion Tax CalculatorEstimate the extra 2026 federal tax from a Roth conversion and how much room is left in your current bracket. State tax is not included.
- Social Security Claiming Age CalculatorTurn your SSA statement FRA benefit into a monthly check at 62, FRA, or 70 using official early-reduction and delayed-retirement credits.
- RSU Vest Tax CalculatorEstimate federal tax when RSUs vest and compare it to the 22% supplemental withholding most brokers take.
- Layoff Runway and COBRA CalculatorWalk cash, severance, unemployment, and COBRA month by month to see how long essentials stay covered after a job loss.
Email me when you add a money planner
Occasional email when something new is worth opening. We never share your address. Unsubscribe anytime.
Discover & search
Explore More Tools
Related tools in Loans & Debt Management — strengthening topical internal links.
Same category · 3 tools
Browse all →Car Loan Payoff Calculator
Loans & Debt Management
Interactive car loan studio with extra-payment what-ifs, amortization preview, and PDF export. See months and interest saved instantly—no sign-up.
Personal Loan Calculator
Loans & Debt Management
Compare two personal loan offers on payment and total cost, then stress-test extra payments. Export a PDF summary from your browser.
Student Loan Payoff Calculator
Loans & Debt Management
Student loan payoff studio with live extra-payment savings, balance chart, amortization preview, and downloadable plan summary.
Community
Reviews & Ratings
See what others think about this tool, then leave your own rating to help improve CalculioHub.
4.8
out of 5.0
4 reviews
Daniel R.
Feb 28, 2026
Very usable on mobile. Would love a save/export option later, but the math feels solid.
Priya S.
Feb 3, 2026
The FAQ section answered my questions before I even had to search. Smooth dark mode too.
Marcus L.
Jan 19, 2026
Simple inputs, clear outputs. This replaced three bookmarks I used to juggle.
Improve this tool
Suggestion Box
Share an idea, report a bug, or send general feedback for Income-Driven Student Loan Calculator. Your input helps shape what we build next.