# How to Calculate Pro Rata Salaries

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Pro rata is Latin for "a proportion of." In terms of salary it refers to the the amount a part-time worker would make if they worked full-time. This is often calculated for part-time positions with "benefits" such as pensions, holidays, maternity pay and parental leave, but you only receive these benefits in proportion to how much you work compared to a 40-hour work week.

Gather your data. You will need the number of hours worked for a full-time employee (A); the number of hours you work per week (B); and the number of weeks you will be working (C). As an example, let's define these variables as A = 40, B = 28, C = 52. A full-time annual salary is \$100,000.

Divide the full-time annual salary by 52. The equation is \$100,000 / 52 = \$1,923.

Divide Step 2 (\$1,923) by the full-time number of hours (40). The equation is \$1,923 / 40 = \$48. This is your hourly rate.

Multiply Step 3 (\$48), the hourly rate, by the number of hours you work each week (28). The equation is \$48 * 28 = \$1,344. This is your weekly salary.

Multiply your weekly salary (\$1,344) by 52. The equation is \$1,344 * 52 = \$69,888. This is your annual salary.

Divide your annual salary (\$70,000) by 12 for your pro rata salary. The equation is \$70,000.00 / 12 = \$5,833.33.

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