About the Monthly Budget Calculator
Build a monthly budget: list income and expenses to see what is left over, your savings rate and biggest spending categories.
Also known as: monthly budget planner, budget calculator, expense tracker.
How to use this calculator
- Enter monthly income, expenses (name: amount, one per line).
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
Left over = income − Σ expenses
Worked example
Using the values pre-filled in the calculator above:
- Monthly income = 4,500
- Expenses (name: amount, one per line): Rent: 1400 Groceries: 450 Utilities: 180 Transport: 220 Insu…
the calculator returns:
- Left over: 1,345
- Total expenses: 3,155
- Savings rate: 29.89%