Gather all sources of income
Include salary or wages
Include bonuses and commissions
Include freelance or self-employment earnings
Include rental income
Include interest and dividends
Include government benefits or pensions
Include any other regular income
Determine the amount received each pay period
Convert weekly income to monthly income by multiplying by 52 and dividing by 12
Convert biweekly income to monthly income by multiplying by 26 and dividing by 12
Convert semimonthly income to monthly income by multiplying by 2
Add all monthly income amounts together
Subtract taxes and mandatory deductions if calculating take-home income
Use the final total as your monthly income