Family Budget
Plan a family budget from income, needs, wants and savings.
About Family Budget
A family budget allocates income into needs, wants and savings, ensuring essentials and saving are covered before discretionary spending. The 50/30/20 rule (needs, wants, savings) is a common default, but family-specific priorities should override it.
Formula
Family Budget
Leftover = income - needs - wants - savings
- needs
- Essential spending required to live
Worked example
With the default values below, Family Budget returns Savings Allocation of $1,100.00. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Monthly income
- 5,500
- Needs (housing, food, bills)
- 3,000
- Wants (dining, fun)
- 900
- Savings percentageaccepts 0–100 %
- 20 %
Results
- Savings Allocation
- $1,100.00
- Total Spending
- $3,900.00
- Leftover
- $500.00
- Needs Ratio
- 54.55%
Step by step
- 1Values used
- 2Family Budget
- 3Savings Allocation= 1,100.00
- 4Total Spending= 3,900.00
- 5Leftover= 500.00
- 6Needs Ratio= 54.55
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, fees or charges 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 Family Budget calculated?
Leftover = income - needs - wants - savings A family budget allocates income into needs, wants and savings, ensuring essentials and saving are covered before discretionary spending.
Why does Family Budget matter?
The 50/30/20 rule (needs, wants, savings) is a common default, but family-specific priorities should override it.
What values do I need to enter?
This calculator takes 4 inputs: Monthly income, Needs (housing, food, bills), Wants (dining, fun), Savings percentage. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.