Your monthly gross income is the total amount you earn each month before taxes, insurance premiums, retirement contributions, or any other deductions come out. The formula depends on how you’re paid: salaried workers divide their annual pay by 12, while hourly workers multiply their rate by hours worked per week, then by 52, then divide by 12. If you have multiple income sources, you’ll add them all together for the full picture.
Knowing this number matters more than you might think. Landlords, mortgage lenders, credit card companies, and government assistance programs all use monthly gross income to decide whether you qualify. Here’s how to calculate yours accurately, no matter how you earn money.
Salaried Employees
If you earn a fixed annual salary, the math is straightforward. Divide your yearly pay by 12. A $72,000 salary works out to $6,000 per month in gross income. That’s it.
You can find your annual salary on your offer letter, employment contract, or the “gross pay” line of your most recent pay stub. If your pay stub shows a year-to-date gross figure, you can also divide that number by the number of months that have passed in the current year to get a monthly average. Just make sure you’re looking at the gross line, not the net (take-home) amount, which is the smaller number after all deductions.
Hourly Workers
For hourly wages, you need to build up to an annual figure first, then convert to monthly. Multiply your hourly rate by the number of hours you work per week, multiply that result by 52 (weeks in a year), then divide by 12.
For example, if you earn $20 per hour and work 40 hours a week: $20 × 40 = $800 per week. $800 × 52 = $41,600 per year. $41,600 ÷ 12 = $3,466.67 per month in gross income.
If your hours vary from week to week, use an average. Look at your pay stubs from the past three to six months, add up the total gross pay across all of them, and divide by the number of months covered. This gives you a more realistic picture than using your best or worst week.
Biweekly and Semimonthly Pay
These two pay schedules look similar but work differently. Biweekly means you’re paid every two weeks, which gives you 26 paychecks per year. Semimonthly means you’re paid twice a month (often on the 1st and 15th), giving you 24 paychecks per year.
For biweekly pay, multiply one paycheck’s gross amount by 26, then divide by 12. If your biweekly gross is $2,500: $2,500 × 26 = $65,000 per year. $65,000 ÷ 12 = $5,416.67 per month. Don’t just double a biweekly paycheck and call it your monthly income. That shortchanges you by two paychecks over the course of a year.
For semimonthly pay, you can simply multiply one paycheck by 2 to get your monthly gross, since you receive exactly two per month.
Bonuses, Commissions, Overtime, and Tips
Irregular income like bonuses, commissions, overtime pay, and tips all count toward your gross monthly income, but because these amounts fluctuate, you’ll need to average them. The standard approach is to add up your irregular income over the past 12 to 24 months and divide by the number of months in that period.
Say you earned $8,400 in commissions over the past 12 months. Your monthly commission income would be $700 ($8,400 ÷ 12). Add that to your base monthly gross income for your total figure.
Mortgage lenders typically want to see at least 12 months of history for variable income, and many prefer 24 months. They’ll also check whether the income is stable or declining. If your commissions have been dropping significantly year over year, a lender may use the lower, more recent figure rather than a two-year average. If you receive an annual bonus, divide it by 12 to get the monthly amount.
Self-Employment Income
When you work for yourself, whether as a freelancer, independent contractor, or small business owner, your gross income calculation is different. You report business income and expenses on Schedule C of your tax return. Your gross monthly income is generally your net profit (total business revenue minus business expenses), divided by 12.
For example, if your Schedule C shows $84,000 in revenue and $24,000 in business expenses for the year, your net profit is $60,000. Divide by 12 and your monthly gross income is $5,000.
If you’re in your first year of self-employment and don’t have a full year of records yet, use the income and expenses from the months you’ve been operating and divide by that number of months. Keep detailed records from the start, because lenders and landlords will want documentation, often in the form of tax returns, profit-and-loss statements, or bank statements showing regular deposits.
Other Income Sources to Include
Monthly gross income isn’t limited to wages or business profits. You should include any recurring income you receive, such as:
- Social Security benefits: the monthly payment amount you receive, whether retirement or disability
- Pension or retirement distributions: regular payments from a pension plan or retirement account
- Investment income: dividends, interest, and rental property income
- Alimony: if you receive payments under a divorce or separation agreement executed before 2019, that money counts as taxable income and should be included in your gross income. Agreements finalized after 2018 changed the rules: alimony received under those newer agreements is not considered taxable income
- Child support: not taxable income and generally not included in gross income calculations for tax purposes, though some lenders and programs may still count it as income when evaluating your application
Add up the monthly amounts from all sources to get your total monthly gross income. If any of these come in annually or quarterly, divide by 12 or 3 to convert to a monthly figure.
Where to Find Your Gross Income Number
You don’t always need to calculate from scratch. Several documents already show your gross income:
- Pay stubs: look for the line labeled “gross pay” or “gross earnings,” which appears before any deductions. The year-to-date gross total is especially useful for averaging.
- W-2 form: Box 1 shows your total taxable wages, tips, and compensation for the year. Divide by 12 for your monthly figure. Note that Box 1 may be slightly lower than your true gross if you made pre-tax contributions to a 401(k) or health insurance plan.
- 1099 forms: if you’re a contractor or have investment income, 1099 forms show the gross amounts paid to you during the year.
- Tax returns: the “total income” line on your Form 1040 combines all income sources into one number. For self-employed individuals, Schedule C shows business income and expenses separately.
Gross vs. Net: Why the Distinction Matters
Gross income is the bigger number on your pay stub. Net income, often called take-home pay, is what lands in your bank account after federal and state taxes, Social Security and Medicare taxes, health insurance premiums, retirement contributions, and other withholdings are subtracted.
Most financial applications ask for gross income specifically. A landlord screening tenants, a lender evaluating a mortgage application, and a credit card issuer setting your credit limit are all looking at gross, not net. If you accidentally report your net income instead, you’ll appear to earn less than you actually do, which could hurt your chances of approval or reduce the amount you qualify for.
When budgeting for your own household expenses, though, your net income is what actually matters since that’s the money available to spend and save each month.