Monthly Income Calculator

How to use this calculator

Three tabs for three starting points. Pick the one that matches how you earn.

From Salary — Enter your annual salary figure (gross, before taxes). The calculator divides by 12 to get gross monthly, then applies your tax rate inputs to arrive at net monthly. This is the simplest path for anyone on a fixed annual salary.

From Hourly — Enter your hourly rate and your regular weekly hours. Add overtime hours separately if you work OT regularly, and pick the overtime multiplier (1.5x is the most common, required by US federal law for non-exempt employees). The calculator annualizes the total, then divides by 12. Use the overtime fields whenever OT is consistent enough to count as part of your real income.

Multiple Sources — If you earn from more than one stream, enter each one. Annual salary is converted monthly automatically. Freelance, rental, investment, and other income are entered as monthly figures directly. The calculator sums them into a combined gross monthly income before applying taxes.

Tax fields — These are not precise tax calculators. They use flat-rate estimates. Enter your best estimate for each:

• Federal tax: around 10-22% for most middle-income earners, depending on income level and filing status
• State tax: 0% if your state has no income tax (FL, TX, WA, NV, WY, SD, TN, AK, NH), up to 13.3% in California
• Other deductions: FICA alone is 7.65% (6.2% Social Security + 1.45% Medicare). Add any 401(k) contributions, health insurance premiums, or other pre-tax payroll deductions

The sum of these three percentages is your effective deduction rate. The calculator shows both gross and net monthly side by side so you can see the difference immediately.

Why gross vs net monthly matters

Gross monthly income is the headline number. Net monthly income is the one that actually governs your life.

The gap between the two can be surprisingly large. For a middle-income earner in the US, the difference between gross and net is typically 28-38% of gross. Meaning your take-home is 62-72 cents of every gross dollar. At higher incomes, with higher marginal rates and additional FICA exposure, the gap widens further.

This matters in several practical situations:

Rent and mortgage qualification. Lenders typically qualify borrowers based on gross monthly income using debt-to-income (DTI) ratios. A 28% front-end ratio on $6,000 gross allows a $1,680 monthly housing payment. But if your net monthly is $3,780, that same payment represents 44% of your actual take-home. Both numbers tell you something real.

Budgeting. Any budget that works from gross income instead of net income is going to look better than reality. Build your budget from net monthly. That is the actual constraint.

Salary negotiations. Employers quote gross salary. Before accepting a job offer, convert the gross to net to understand what you are actually agreeing to. A $10,000 gross salary increase sounds significant until you realize $3,700 of it goes to federal and state taxes and FICA, leaving you with $6,300 more per year, or about $525 extra per month.

Gross income is the number you negotiate. Net income is the number you live on. Most financial stress comes from confusing the two.

The formulas

The biweekly figure matters because many employers pay every two weeks, producing 26 paychecks per year rather than 24 semi-monthly paychecks. Two months per year have three biweekly paychecks instead of two, which can feel like a windfall if you budget only for two per month.

Hourly to monthly: the annualization approach

Converting hourly pay to a monthly figure requires going through annual, because the number of working days varies by month. The standard approach is to annualize first.

The formula: Hourly rate x hours per week x 52 / 12

Multiple income sources: combining everything

Many people today earn from more than one stream. A salaried job plus freelance work, rental income from a property, or dividend income from investments all contribute to total monthly income. The calculator’s Multiple Sources tab handles all of these.

For self-employment income, your effective tax rate is higher than for W-2 income because you pay both the employee and employer portions of FICA (15.3% on the first $168,600 for 2024, versus 7.65% for employees). Factor this into your “Other Deductions” percentage when using the calculator for freelance income.

Pay period equivalents reference table

The same annual salary looks different across pay periods. Here is how $60,000/year breaks down:

Note that biweekly ($2,308) and semi-monthly ($2,500) are not the same, though they are often confused. If you are paid biweekly, you receive two “extra” paychecks per year compared to someone paid semi-monthly. Over a year the total is identical, but the cash flow timing differs.

Practical tips for managing monthly income

Know your real hourly rate. Even if you are salaried, divide your net monthly income by the actual number of hours you work each month. If you work 50-hour weeks, your real hourly take-home is lower than it appears on a per-hour basis compared to someone working 40 hours for slightly less. This is useful for evaluating job changes and deciding whether overtime is worth it.

Budget from net, not gross. Your grocery store, landlord, and utility company do not accept gross income. Build your monthly budget using the net monthly figure from this calculator. A 50/30/20 budget on $5,000 gross assumes $1,000 more than you actually have if your net is $3,500.

Account for variable income. If part of your income is variable (commissions, tips, bonuses, freelance), use a conservative average for the monthly income figure. Take the last 12 months of variable income, total it, and divide by 12. Do not base a budget on a good month.

Re-run this each time income changes. A raise, a new side project, a change in tax withholding, or a new state of residence all change your net monthly. Run the calculator again whenever your situation changes so your budget stays grounded in current reality.

The bottom line

Your gross monthly income and your net monthly income are two different numbers, and the difference between them is not cosmetic. For most middle-income earners, taxes and FICA alone take 28-37% of gross. Add in retirement contributions and insurance premiums and your effective deduction rate can exceed 40%.

The calculator gives you both numbers instantly for any salary, hourly rate, or combination of income sources. Use the gross for negotiations and loan applications. Use the net for budgeting, savings goals, and any real-world financial planning.

Understanding the gap is not pessimistic. It is just accurate. And working from accurate numbers consistently is the foundation of not being surprised by your own finances.