Income Driven Repayment Calculator

Work out income driven repayment instantly with clear inputs, formula shown and shareable results.

About Income Driven Repayment Calculator

Income-driven plans ignore the loan balance and set the payment from income instead: a fixed percentage of discretionary income, defined as income above a protected threshold that reflects household size.

Formula

Income-driven payment

Monthly = (Income - threshold) × share / 12

Worked example

With the default values below, Income Driven Repayment Calculator returns Monthly Payment of $5,000.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Annual Gross Incomeminimum 0: 900,000
Protected Income Thresholdminimum 0: 300,000
Share Of Discretionary Incomeaccepts 1–25 %: 10 %

Results

Monthly Payment: $5,000.00
Discretionary Income: $600,000.00
Annual Payment: $60,000.00
Payment As Share Of Gross Income: 6.667%

Step by step

1Values used
2Income-driven payment
3Monthly Payment= 5,000.00
4Discretionary Income= 600,000.00
5Annual Payment= 60,000.00
6Payment As Share Of Gross Income= 6.667

Assumptions and limits

The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax or fees or charges into account.
Figures are rounded for display to 3 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
Figures are estimates. Lenders apply their own rounding, fees and eligibility rules, and rates change. This is not financial advice — confirm the numbers with your lender.
This is an estimate for general information and not professional financial, tax or legal advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Figures are estimates. Lenders apply their own rounding, fees and eligibility rules, and rates change. This is not financial advice — confirm the numbers with your lender.

Frequently Asked Questions

What if income is below the threshold?

Discretionary income is zero, so the required payment is zero while still counting towards forgiveness in most schemes.

Can the balance grow under this plan?

Yes. If the payment is below accruing interest the balance rises, which is why interest subsidies matter in these plans.