Free Monthly Budget Calculator

By Kevin Brouillard | Updated July 1, 2025

Budgeting can be a very valuable way to keep tabs on your money and make sure you are moving toward your financial goals. By using a personal monthly budget calculator, you can better understand your income, spending, and savings to stay on track or make adjustments as needed.

Here, you’ll learn how to use this free monthly budget calculator, plus gain valuable insights into budgeting techniques and tips.

Key Points

•   With a free monthly budget calculator, you can start by entering monthly income before taxes and then input income taxes from pay stubs.

•   Adding all monthly expenses, including fixed and variable costs, can help you track spending.

•   The calculator determines net monthly savings by subtracting total expenses from income.

•   Experiment with different budget scenarios to plan for financial goals.

•   Use budgeting methods like 50/30/20, zero-sum, and envelope systems to find the right fit and gain better financial management.



Calculator Definitions

When using your free monthly budget calculator, you’ll want to have your financial details available to enter. Here’s a selection of the information you’ll need handy:

• Income: Enter your monthly income before taxes

• Income taxes: Account for federal, state, and municipality income taxes, which will vary depending on your total earnings and qualifying deductions or exemptions

• Housing: Include rent or mortgage payments, utilities, property tax, insurance, and home maintenance expenses

• Groceries: Tally food, toiletries, and household supplies

• Entertainment: This spending category is where you account for dining out, events (movies, plays, concerts), streaming services, sports tickets, books, and hobby-related costs

• Debt payments: This includes monthly payments on credit cards or to lenders for student loans, mortgages, personal loans, auto loans, or other types of loans or lines of credit