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Pay Off Student Debt Calculator

Student Loan Payoff Calculator works out Monthly payment and Months of payments from Repayment plan, Loan balance and Annual interest rate. The default figures on this page give monthly payment of 341.10; change any entry and the result, the working and the sources update together.

Monthly payment
341.10
Student Loan Repayment Calculator
Months of payments
86
Years of payments
7.17
Total paid
37,567.01
Total interest
7,567.01
Standard 10-year payment for comparison
341.10
Interest in the first month
163.25
Interest saved by extra payments
3,365.36
Balance grows under this payment
no
Worked out from 34 CFR 685.208 - Repayment plans (Direct Loan Program) and 4 other sources.
An estimate, not a servicer statement or an eligibility determination. Income-driven plan parameters, forgiveness horizons and the tax treatment of cancelled debt are set by regulation and change; confirm your plan terms with your loan servicer.

Your figures

Updates as you type
Formatting only. This does not change the calculation.
The weighted average rate across your loans, as shown by your servicer.
Used by the level plans. 10 years is standard; extended plans run to 25.
Additional principal paid on top of the scheduled payment.
Adjusted gross income. Used by the income-driven and payroll-deduction plans.
Leave at 0 to use the published table for your family size and region.
The multiple of the guideline protected from the payment. 150% on most income-driven plans.
The percentage of discretionary income the plan charges each year.
Income-driven payments are recertified each year; this grows the income used for that.
Years of qualifying payments after which any remaining balance is cancelled.
Annual income above which deductions start, from your loan authority's current schedule for your plan and tax year.
The percentage of income above the threshold deducted at source.

How this is worked out

3 steps
  1. Monthly rate = 6.53% / 12 = 0.544167%
  2. Payment = P i / (1 - (1+i)^-n) on 30000 over 120 months = 341.1
  3. Paying 100 extra clears the loan in 86 months and saves 3365.36 of interest.
Yearly summarytable
yearinterestprincipalendingBalance
11,857.373,435.8326,564.17
21,626.23,66722,897.17
31,379.423,913.7818,983.39
41,116.054,177.1514,806.24
5834.974,458.2310,348.01
6534.994,758.215,589.8
7214.835,078.37511.43
83.18511.430

Figures from HHS poverty guidelines, 2026 rules, checked 31 August 2026. Its 4 worked examples are re-run on every release, last on 15 September 2026. What changed · how reference data is kept current

Sources and references

5 sources
34 CFR 685.208 - Repayment plans (Direct Loan Program)
Defines the standard, extended, graduated and income-driven repayment plans and their term limits.
34 CFR 685.209 - Income-driven repayment plans
Defines discretionary income as AGI less a multiple of the applicable HHS poverty guideline for the borrower's family size and state, and the payment as a percentage of it.
HHS, Annual Update of the HHS Poverty Guidelines, 91 FR (published 15 January 2026), FR Doc. 2026-00755
2026 · Poverty guideline table used for the discretionary-income floor.
ASPE, HHS Poverty Guidelines
Poverty guideline table used for the discretionary-income floor.
Standard annuity-immediate payment formula, PMT = P i / (1 - (1+i)^-n)
Used for the standard and extended level plans; equivalent to the Excel PMT function.

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Save it, change one figure, then compare the two

The calculation stays free. Save this scenario, adjust one assumption, save that too, and put them side by side to see exactly what the change costs you. A free account keeps 5 scenarios and 2 comparisons; Personal makes both unlimited and adds exports and private links. Nothing is saved unless you press Save.

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What the Student Loan Payoff Calculator calculates

Computes student loan repayment on a standard or extended level plan, on an income-driven plan where the payment is a share of discretionary income above the poverty guideline, or on a payroll-deduction scheme, and shows the payoff time, total interest and any balance forgiven.

How to use this Student Loan Payoff Calculator

Enter Repayment plan, Loan balance, Annual interest rate and Repayment term. Monthly payment updates as you type. Change one figure at a time to see what drives the result.

How the result is worked out

Open “How this is worked out” beside the result for the step-by-step calculation behind Monthly payment, Months of payments and Years of payments.

The method follows 34 CFR 685.208 - Repayment plans (Direct Loan Program), 34 CFR 685.209 - Income-driven repayment plans, HHS, Annual Update of the HHS Poverty Guidelines, 91 FR (published 15 January 2026), FR Doc. 2026-00755, ASPE, HHS Poverty Guidelines and Standard annuity-immediate payment formula, PMT = P i / (1 - (1+i)^-n).

What you can compare

Change one input at a time to see how it affects Monthly payment, Months of payments and Years of payments. The inputs you can vary are Repayment plan, Loan balance, Annual interest rate, Repayment term, Extra payment each month and Annual income (AGI).

Understanding Monthly payment, Months of payments and Years of payments

An estimate, not a servicer statement or an eligibility determination. Income-driven plan parameters, forgiveness horizons and the tax treatment of cancelled debt are set by regulation and change; confirm your plan terms with your loan servicer.

Results are general information, not financial, tax, legal, medical or engineering advice. Check any decision that matters with a qualified professional.

Embed this calculator on your website

Copy this code into any page. The calculator appears with the figures currently entered, sizes itself to fit, and a small credit line links back here. Free, no account, no ads inside it, no tracking of your readers. Set your own figures and fixed fields; Personal removes the credit line, sets your colour and shows you which sites use it.

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Frequently asked questions

How much would a $100,000 student loan be monthly?

On the figures this page opens with — loan balance 30,000, annual interest rate 6.53% and repayment term 10 years — the monthly payment is 341.1. No single number fits everyone: change any figure above and the answer updates as you type, with each step of the arithmetic beside it.

How much would a $70,000 student loan be monthly?

It needs Repayment plan, Loan balance, Annual interest rate, Repayment term, Extra payment each month and Annual income (AGI). Nothing else is required, and the figures stay in your browser.

How long will it take to pay off $40,000 in student loans?

The result gives Monthly payment, Months of payments, Years of payments, Total paid, Total interest and Balance forgiven, each labelled with its unit so the figure can be read on its own.

Did Trump forgive student loans?

Computes student loan repayment on a standard or extended level plan, on an income-driven plan where the payment is a share of discretionary income above the poverty guideline, or on a payroll-deduction scheme. On the figures this page opens with — loan balance 30,000, annual interest rate 6.53% and repayment term 10 years — the monthly payment is 341.1. Put your own figures in their place and the working updates beside the result.

What information do I need for the Student Loan Payoff Calculator?

You need Repayment plan, Loan balance, Annual interest rate, Repayment term, Extra payment each month, Annual income (AGI), Family size and Poverty guideline schedule. The page opens with default figures that give monthly payment of 341.10, so you can see the scale before entering your own.

What does this Student Loan Payoff Calculator show?

It shows Monthly payment, Months of payments, Years of payments, Total paid, Total interest, Balance forgiven, Discretionary income and Poverty guideline used, with the working and any warnings for your entries.

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