Monthly Budget Calculator

Budgeting is the foundation of financial wellness — yet many people avoid it because spreadsheet apps feel cumbersome and online tools require signing up or sharing sensitive financial data. Our free Monthly Budget Calculator removes all friction: no accounts, no uploads, no spreadsheets. Simply list your income sources, add your monthly expenses across customizable categories, and instantly see your total income, total spending, surplus or deficit, and savings rate. Interactive bar and donut charts visualize income versus expenses and break down spending by category so you can spot trends at a glance. Everything runs locally in your browser — your financial information never leaves your device.

How to Use the Budget Calculator

1. Add your income sources — Enter each monthly income stream (salary, freelance, investments, side gigs) with a name and amount. Click Add for more lines.
2. List your expenses — Add each expense item, choose a category (Housing, Food, Transport, Utilities, etc.), and enter the monthly amount.
3. Review your summary — The three summary cards show total income, total expenses, and your surplus or deficit. The savings rate shows what percentage of income remains after expenses.
4. Analyze the charts — The bar chart compares income versus expenses at a glance. The donut chart breaks down where your money goes by category, making it easy to identify overspending areas.

Key Features

• Income & Expense Tracking

  Add unlimited income sources and expense items with customizable names and amounts.

• Category-Based Breakdown

  Assign expenses to 9 predefined categories for organized spending analysis.

• Visual Charts

  Income vs Expenses bar chart and a donut chart breaking down spending by category.

• Instant Savings Rate

  Automatically calculates what percentage of your income remains as savings after all expenses.

• Surplus / Deficit Indicator

  Green highlight for surplus, red for deficit — instantly know if you are over or under budget.

• 100% Private

  Financial data stays in your browser — never uploaded, never stored, never tracked.

Frequently Asked Questions