Monthly Budget
Calculate your monthly budget from income and expenses.
About Monthly Budget
A monthly budget subtracts fixed and variable expenses from income to reveal what is left, then allocates a savings target from that. Budgeting forces a conscious allocation between needs, wants and saving rather than spending whatever is left.
Formula
Monthly Budget
Surplus = income - expenses - savings target
- savings target
- Percentage of income set aside for savings
Worked example
With the default values below, Monthly Budget returns Total Expenses of $3,100.00. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Monthly income
- 4,200
- Fixed expenses
- 2,200
- Variable expenses
- 900
- Saving targetaccepts 0–100 %
- 20 %
Results
- Total Expenses
- $3,100.00
- Remaining After Expenses
- $1,100.00
- Savings Target
- $840.00
- Surplus
- $260.00
Step by step
- 1Values used
- 2Monthly Budget
- 3Total Expenses= 3,100.00
- 4Remaining After Expenses= 1,100.00
- 5Savings Target= 840.00
- 6Surplus= 260.00
Assumptions and limits
- The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax or compounding frequency into account.
- Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How is Monthly Budget calculated?
Surplus = income - expenses - savings target A monthly budget subtracts fixed and variable expenses from income to reveal what is left, then allocates a savings target from that.
Why does Monthly Budget matter?
Budgeting forces a conscious allocation between needs, wants and saving rather than spending whatever is left.
What values do I need to enter?
This calculator takes 4 inputs: Monthly income, Fixed expenses, Variable expenses, Saving target. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.