Personal Finance Formulas
Explore formula guides that explain the equations, variables, and assumptions behind each calculator.
11 Formulas
Supporting formulas for personal finance calculators.
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Take Home Pay FormulaLearn how take-home pay is estimated from gross income, tax, pension contributions and other recurring deductions.View formula→Salary Calculator FormulaLearn how a salary calculator estimates annual deductions and take-home pay from gross salary and basic deductio...View formula→Hourly Wage Calculator FormulaLearn how weekly, monthly, annual, and overtime gross pay are calculated from an hourly wage and hours worked.View formula→Overtime Pay FormulaLearn how overtime pay, total gross pay, and effective hourly earnings are calculated for a pay period.View formula→Bonus Pay Calculator FormulaLearn how a bonus pay calculator estimates gross bonus, deductions, and take-home bonus pay.View formula→Commission Calculator FormulaLearn how commission earned, total pay, and effective commission rate are calculated in a commission calculator.View formula→Pay Rise FormulaLearn how a pay rise calculator estimates your new salary, annual increase, and pay per selected pay period.View formula→Salary Increase Percentage FormulaLearn how to calculate a salary increase in both cash terms and percentage terms.View formula→Salary Comparison FormulaLearn how a salary comparison calculator estimates gross pay difference, net pay difference, and effective hourl...View formula→Annual to Monthly Salary FormulaLearn how an annual salary is converted into estimated monthly, biweekly, weekly, daily, and hourly pay.View formula→Monthly to Annual Salary FormulaLearn how to calculate annual salary, weekly pay, and hourly rate from a monthly salary.View formula→