Student Loans

Income Driven Repayment Calculator

Estimate an income-driven student loan payment from AGI, the poverty guideline, and the plan's income share.

What this calculator does

The Income Driven Repayment Calculator estimates your result instantly from the values you enter, using standard student loans formulas. Estimate an income-driven student loan payment from AGI, the poverty guideline, and the plan's income share. Calculations run in your browser, so nothing you type is sent to a server, and the output is an estimate for planning rather than financial advice.

Income Driven Repayment Calculator

Result

—
Discretionary Income
—
Estimated Monthly Payment

About Income Driven Repayment Calculator

Income-driven repayment plans cap your student loan payment at a share of what you earn above a poverty-based floor. This tool estimates the monthly payment under that idea using your adjusted gross income, the poverty guideline for your situation, and the percentage your plan applies.

It helps borrowers who expect income to swing from year to year see what a plan would look like before committing. Because it separates the discretionary income from the final payment, you can watch how the two move as your income or the plan percentage changes.

Formula & Mathematical Calculation

Discretionary Income = f(Adjusted Gross Income ($/yr), Poverty Guideline ($/yr), Discretionary Income (%))

Calculated according to standard finance formulas implemented in the calculator core.

Calculation Example

With a $45000 income and a $15060 poverty guideline at 150%, discretionary income is max(0, 45000 - 1.5 x 15060) = 45000 - 22590 = $22410. At a 10% plan percentage the payment is 22410 x 10 / 100 / 12 = $186.75. The tool shows $22410 and $186.75 with the matching interpretation line.

Key Benefits

  • Shows both the discretionary income and the final payment, not just the number you would owe.
  • Floors discretionary income at zero so a low income cannot produce a negative payment.
  • Lets you test different plan percentages without redoing the arithmetic by hand.
  • Spreads the annual share across 12 months so the figure is in per-month terms.
  • Keeps the poverty guideline as an input rather than hard-coding it, so you can use the value that fits your case.

How to Use this Calculator

  1. Enter your income
    Type your adjusted gross income in the AGI field, for example 45000.
  2. Enter the poverty guideline
    Put the annual poverty guideline that matches your household in the Poverty Guideline field, such as 15060.
  3. Set the plan percentage
    Enter the percentage your income-driven plan applies in Discretionary Income, for example 10.
  4. Read the two outputs
    Discretionary Income shows what is left above the floor; Estimated Monthly Payment shows the plan-style payment in dollars per month.
  5. Test the percentage
    Raise or lower the percentage to see how the payment scales, since it is a direct share of discretionary income.

Assumptions & Limitations

What the calculation assumes

  • Every value you enter is treated as an exact, known amount.
  • Rates and contributions are assumed to stay constant for the whole period unless the form asks for them separately.
  • Results use standard financial formulas and ignore fees, penalties and promotional terms that are not entered above.
  • Inflation, tax changes and market volatility are not modelled unless a field for them is provided.
  • Amounts are unit-agnostic: results are returned in the same currency you enter.

What it does not cover

  • Income Driven Repayment Calculator produces estimates for education and planning, not a quote, offer or professional advice.
  • Real-world outcomes differ when fees, taxes, rounding rules or provider-specific terms apply.
  • Local regulations and tax rules vary by country and change over time; verify current rules for your jurisdiction.
  • Figures are only as accurate as the inputs you supply — check them before acting on the result.
  • For decisions with lasting financial impact, confirm the numbers with a qualified professional.

Frequently Asked Questions

It is your adjusted gross income minus 150 percent of the poverty guideline, with a floor of zero. That zero floor matters: if your income is at or below the floor, the tool reports discretionary income of zero rather than a negative number, so the estimated payment also reads as zero.

The tool does not look it up for you; it expects you to supply the annual guideline that applies to your household size and region. Using the value you were given for your plan keeps the estimate consistent with the plan you are actually under.

Because discretionary income is floored at zero, anyone whose adjusted gross income is at or below 150 percent of the guideline has no positive base for the share. Multiplying zero by any percentage gives a zero payment, so the tool shows $0 in that case.

No. The tool simply multiplies discretionary income by whatever percentage you enter and divides by twelve. Enter the rate that matches your plan to get a matching estimate; it is not checking against any published plan schedule.

Free to use, no account needed. Calculations run in your browser, so nothing you type is sent to a server. Results are estimates — how we build and check our calculators.

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