Budget Calculator

This calculator annualizes the income you enter using the pay-frequency conversion and then divides it by twelve to create a monthly planning figure. It applies each percentage to that monthly amount, preserving decimal-safe money arithmetic and showing any remainder as unallocated. The familiar 50/30/20 example comes from a Consumer Financial Protection Bureau budgeting guide, but household costs vary, so the controls accept a custom split. Use take-home income rather than salary before payroll deductions. The output is a planning aid rather than financial advice: irregular income, taxes, insurance, annual bills, and debt terms may require separate sinking funds. A weekly paycheck is multiplied by 52, a biweekly paycheck by 26, semimonthly pay by 24, monthly pay by 12, quarterly pay by 4, and annual pay by 1. These calendar factors are the same factors used for annualizing a regular pay rate in 29 CFR 778.113. The final division by twelve can create a cent remainder; the displayed figures are rounded half-up to cents, so a category total may differ by a cent from an unrounded spreadsheet. A negative unallocated result means the requested percentages exceed the available monthly income, not that the calculation failed.