ConvertOnlineMonthly Budget Calculator for Income and Expenses
Report source: https://convertonline.org/calculators/budget-calculator
Turn income and bills with different payment frequencies into one monthly view. See whether the plan creates a surplus or shortfall and how spending is divided among needs, wants, savings, and other costs.
Calculations run in your browser. Your income, expenses, balances, labels, and other financial inputs are not uploaded or stored.
Budget Calculator
Estimated monthly cash flow
Detailed results
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How the budget calculator works
Monthly surplus or shortfall = monthly take-home income − monthly expenses and savings allocations. Weekly amounts use 52 ÷ 12; biweekly amounts use 26 ÷ 12.
The 50/30/20 comparison is a reference, not a required allocation. Housing, healthcare, family needs, and financial priorities vary.
How to use this calculator
- Enter take-home income and choose how often each amount is received.
- Add recurring needs, wants, savings, extra debt payments, and less frequent costs with their actual frequencies.
- Review the monthly surplus or shortfall, category shares, and annualized totals before saving the report.
Assumptions and limitations
- Income means money available after taxes and payroll deductions.
- Frequency conversions estimate an average month, so actual weekly or biweekly cash flow varies by calendar month.
- Savings and extra debt payments are treated as planned outflow rather than unused surplus.
Sources and further reading
Worked example
Example: a $5,000 monthly take-home budget
With $2,500 for needs, $1,000 for wants, $750 for savings or extra debt, and $250 for other costs, planned outflow is $4,500.
The estimated monthly surplus is $500. The entered allocation equals 50% needs, 20% wants, 15% savings or extra debt, and 5% other.
Frequently asked questions
Should I use gross or take-home income?
Use take-home income available after taxes, insurance, retirement deductions, and other payroll withholding.
How are biweekly payments converted to monthly amounts?
A biweekly amount is multiplied by 26 and divided by 12, which accounts for two months that usually contain a third biweekly payment.
Is the 50/30/20 split required?
No. It is a comparison framework. Your workable allocation depends on local costs, household needs, debt, and goals.
This calculator provides an estimate for planning and education. It is not financial, investment, tax, legal, or credit advice.