Discretionary Income Calculator

Discretionary income is computed by taking your total adjusted income and subtracting a multiple of the official federal poverty guideline corresponding to your state, marital status, and number of dependents. For standard budget assessments, the formula subtracts 150 percent of the poverty guideline from total income: Discretionary Income = Total Income - (1.5 × Poverty Guide). For specialized repayment thresholds like ICR, the multiplier adjusts to 100 percent of the poverty guideline: ICR Discretionary Income = Total Income - Poverty Guide.

Imagine an individual filer living in a state where the federal poverty guideline for a single person is $15,000. Suppose their adjusted annual income is $45,000. To find the standard discretionary income, we multiply the poverty guide by 1.5, yielding $22,500. Subtracting this from the adjusted income ($45,000 - $22,500) results in a standard discretionary income of $22,500. For an ICR-specific calculation, we subtract the unmodified poverty guide ($15,000) directly from the adjusted income, resulting in $30,000 of ICR discretionary income.

Always ensure you use your most recent tax-adjusted gross income figures for accurate modeling. Keep in mind that federal poverty guidelines update annually, so historical figures will yield incorrect outputs. Finally, differentiate between standard discretionary thresholds and ICR thresholds depending on whether you are assessing general savings capacity or federal loan obligations.