Workers are frequently given only pieces of information that concern monthly income streams. Although many employees know how much money is brought home each month, the monthly gross-income figure is often unknown. If the pay information you have does not translate to the gross amount of income you receive each month, you may perform a few math calculations to determine how much income to expect each month before taxes are taken out. You may then use the result of your calculation to apply for loans or credit and complete financial documents that request gross-income information.

### Single Paycheck

Look at your pay stub and note the amount of gross income you receive. If you receive a set salary, your gross income is the same amount each paycheck. If you receive an hourly wage, use a pay stub that reflects the number of hours you work on average.

Determine the number of times each month you receive a paycheck. If you are paid weekly or bi-weekly, you receive an extra check twice per year. You must account for the extra check to generate an accurate gross-income figure for the month. If you receive a paycheck each week, you receive 4.3 paychecks each month. If you receive a bi-weekly paycheck, you are paid 2.17 times per month.

Multiply your single paycheck gross-income by the number of times you receive a paycheck each month. If you are paid weekly, multiply the paycheck amount by 4.3. If you receive a bi-weekly check, multiply the paycheck amount by 2.17. If you are paid semi-monthly, multiply your paycheck amount by 2. The result is your gross income for the month.

### Annual Salary

Determine the frequency of your pay periods. Pay frequencies include weekly, bi-weekly (once every two weeks), semi-monthly (twice per month) and monthly.

Use your pay frequency to determine the number of paychecks you receive during the year. If you are paid weekly, you receive 52 paychecks each year. If you are paid bi-weekly, you receive 26 pay checks each year. Semi-monthly employees receive 24 paychecks per year and monthly employees receive 12 pay checks per year.

Divide your annual salary figure by the number of annual pay checks you receive. The result is your gross income per month.