🎓
✓ Editorially reviewed by Derek Giordano, Founder & Editor · BA Business Marketing

RAP Student Loan Calculator

Repayment Assistance Plan payment, interest waiver and $50 principal match

Updated October 2026

🧮
700+ calculators, no signup required
Finance · Health · Math · Science · Business
nnng.com
RAP payment = AGI × tier rate ÷ 12 − $50 per dependent, never below $10. The rate is 1% of AGI from $10,001 to $20,000 and rises one point per $10,000 to 10% above $100,000, applied to your whole AGI. A single borrower with $55,000 of AGI and no dependents pays 5%: $55,000 × 0.05 ÷ 12 = $229.17 a month. On $35,000 at 6.5%, the first month’s interest is $189.58, so $39.58 reaches principal and the federal match adds $10.42 to make the $50 minimum principal reduction.

The RAP Formula, Step by Step

Take the borrower with $55,000 of AGI, no dependents, $35,000 of Direct Loans at 6.5%:

1. Tier: $55,000 is in the $50,001-$60,000 band, so the rate is 5%.
2. Annual amount: $55,000 × 5% = $2,750, applied to the whole AGI, not just the part above a line.
3. Monthly: $2,750 ÷ 12 = $229.17. No dependents, so nothing is subtracted, and it is above the $10 minimum.
4. First month: interest is $35,000 × 6.5% ÷ 12 = $189.58, leaving $39.58 for principal. That is under $50, so the Department adds $10.42 and the balance drops by $50.00.
5. Long run: with income rising 3% a year, the payment is reset each year and the loan is paid off after 162 payments (13 years 6 months), about $55,550 paid in total and $107 of federal match.

Which Numbers to Enter

AGI is line 11 of your most recent Form 1040, the figure RAP uses when you certify income (you can also let the Department pull it from the IRS with consent). Filing status matters: on a joint return RAP uses combined AGI, and if your spouse also has federal loans the household payment is split by each person’s share of the combined balance. Dependents are the ones claimed on that return. The balance and weighted rate are on your loan details at StudentAid.gov; the weighted rate is each loan’s rate weighted by its balance. Income growth only affects the long-term projection.

The results give the first payment with how it was built, the first month’s interest and match, the AGI that would move you to the next tier, and either the payoff date or the amount forgiven after 360 payments.

RAP Payment by AGI Tier

Because each band’s rate applies to all income, the bracket edges are steep: $40,000 of AGI costs $100 a month, but $40,001 costs $133.34.

AGIRateMonthly payment, no dependentsWith 2 dependents
$15,0001%$12.50$10.00
$25,0002%$41.67$10.00
$35,0003%$87.50$10.00
$45,0004%$150.00$50.00
$55,0005%$229.17$129.17
$65,0006%$325.00$225.00
$75,0007%$437.50$337.50
$85,0008%$566.67$466.67
$95,0009%$712.50$612.50
$120,00010%$1,000.00$900.00

Five Borrowers Over 30 Years

Projections assume income grows 3% a year, payments are made in full and on time, and the rate is fixed. Totals are what the borrower pays; the match and waived interest come from the Department.

BorrowerProfileFirst paymentOutcomeTotal paidPrincipal matchInterest waived
Single, low income$25,000 AGI, 0 dep., $30,000 at 6.0%$41.67Forgiven after 30 yrs: $1,568$43,908$9,652$11,317
Parent of two$35,000 AGI, 2 dep., $40,000 at 6.5%$10.00Forgiven after 30 yrs: $8,377$55,046$8,733$30,438
Single, mid income$55,000 AGI, 0 dep., $35,000 at 6.5%$229.17Paid off in 13 yr 6 mo$55,550$107$0
Parent of one, higher balance$80,000 AGI, 1 dep., $60,000 at 7.0%$416.67Paid off in 11 yr 10 mo$92,994$0$0
Graduate degree, high balance$120,000 AGI, 0 dep., $120,000 at 7.5%$1,000.00Paid off in 13 yr 8 mo$198,583$0$0

The low-income borrowers never cover their interest, so the waiver keeps their balances from growing and the match shrinks them slowly; both end with a forgiven balance. Higher earners pay their loans off in 12 to 14 years, and for them RAP works much like a standard plan.

Interest Waiver and Principal Match

If a full, on-time payment does not cover the month’s interest, the unpaid interest is waived instead of added to the balance. If the payment reduces principal by less than $50, the Department adds a matching amount equal to the smaller of $50 minus the principal you paid, or your whole payment, so a $10 payment that goes entirely to interest still lowers principal by $10. Late or partial payments get neither benefit.

Eligibility and Deadlines, 2026 to 2028

RAP opened July 1, 2026. Direct Subsidized, Unsubsidized, Grad PLUS and Consolidation loans are eligible; Parent PLUS loans and consolidation loans that repaid a Parent PLUS loan are not. Loans first disbursed on or after July 1, 2026 can be repaid only under RAP or the new Tiered Standard plan (fixed payments over 10 to 25 years depending on the amount borrowed). Borrowers in the older plans being phased out have until July 1, 2028 to choose RAP, Tiered Standard or IBR. Any balance left after 360 qualifying payments is discharged, and RAP payments count toward Public Service Loan Forgiveness. Since 2026, balances forgiven under income-driven plans are generally taxable federal income again, because the temporary exclusion expired after 2025.

RAP or IBR? Payments Compared

IBR for borrowers since July 2014 takes 10% of AGI above 150% of the poverty guideline for your family size. Using the 2026 HHS guidelines for the 48 states and family size = borrower plus dependents:

Borrower (from above)RAP monthlyIBR monthly (10%)Lower payment
Single, low income$41.67$8.83IBR
Parent of two$10.00$0.00IBR
Single, mid income$229.17$258.83RAP
Parent of one, higher balance$416.67$396.17IBR
Graduate degree, high balance$1,000.00$800.50IBR

IBR is lower at the bottom, where the poverty-line allowance shelters most income, and at higher incomes, where RAP’s rate reaches 7% to 10% of all AGI; RAP is cheaper in the middle and adds the interest waiver and match. A lower payment is not the whole story: IBR forgives after 20 or 25 years rather than 30, and IBR payments are capped at the 10-year standard payment, which this comparison does not apply.

Common Mistakes With RAP Estimates

Using gross pay instead of AGI. Pre-tax 401(k), HSA and health premiums are not in AGI, so AGI is usually lower than salary. Missing a tier edge. A small raise that crosses a $10,000 boundary lifts the rate on all income; a pre-tax retirement contribution can pull AGI back under the line. Assuming joint filing is free. Combined AGI can move a couple into a higher tier; filing separately uses only your own AGI but can cost tax credits. Counting Parent PLUS loans. They are not eligible. Paying late. The interest waiver and match apply only to on-time, full payments.

What the Calculator Does Not Model

It does not track PSLF’s 120-payment count, estimate tax on a forgiven balance, compare the Tiered Standard plan, apply IBR’s payment cap, or handle periods of forbearance, deferment or default. It assumes one weighted rate and annual recertification at a steady growth rate. Private student loans are not covered. For a binding figure use the Loan Simulator at StudentAid.gov or your servicer, and get tax advice before a large forgiven balance is discharged.

Frequently Asked Questions

How is the RAP payment calculated?
Find your AGI tier (1% for $10,001-$20,000, up one point per $10,000, 10% above $100,000), multiply your whole AGI by that rate, divide by 12, subtract $50 per dependent, and use $10 if the result is lower.
Is RAP better than IBR?
It depends on income and family size. IBR takes 10% of income above 150% of the poverty line (15% for older loans), so it is usually lower at low incomes and, as RAP’s rate climbs toward 10%, at higher incomes; RAP is usually lower in the middle and adds the interest waiver and $50 principal match.
Does unpaid interest grow my balance on RAP?
No. If your on-time payment does not cover the month’s interest, the rest is waived.
When is the RAP balance forgiven?
After 360 qualifying monthly payments (30 years); public service workers can qualify for PSLF after 120 payments.
Do I have to switch to RAP?
Only for new loans made on or after July 1, 2026, which can use RAP or Tiered Standard. Borrowers in the older plans being phased out must choose RAP, Tiered Standard or IBR by July 1, 2028.
Can Parent PLUS loans use RAP?
No. Parent PLUS loans, and consolidation loans that include one, are not eligible for the Repayment Assistance Plan.
Is RAP forgiveness taxed?
Under current law, yes in most cases: the federal exclusion for income-driven forgiveness expired after 2025. PSLF forgiveness remains tax-free.

How to Use This Calculator

  1. Enter AGI and filing status — from your most recent tax return; add your spouse’s AGI and loans if you file jointly.
  2. Enter dependents — each one takes $50 off the monthly payment.
  3. Enter balance and rate — your total federal Direct Loan balance and weighted interest rate.
  4. Read the payment and the long view — first-month interest and match, payoff or the amount forgiven after 30 years.
📚 Sources & References
  1. [1] U.S. Department of Education. Fact sheet: simplifying student loan repayment (reviewed Jun 11, 2026). www.ed.gov
  2. [2] Congressional Research Service. The Repayment Assistance Plan (RAP) in P.L. 119-21, IF13075 (Jul 31, 2025). www.everycrsreport.com
  3. [3] Electronic Code of Federal Regulations. 34 CFR 685.209, income-driven repayment plans (accessed Oct 2026). www.ecfr.gov
  4. [4] HHS ASPE. 2026 Poverty Guidelines (Jan 15, 2026). aspe.hhs.gov
✅ Editorial Standards — Every calculator is built from peer-reviewed formulas and official data sources, editorially reviewed for accuracy, and updated regularly. Read our full methodology · About the author