Calculator
Monthly Budget Calculator
Net salary after tax and PF, plus any other regular income.
Rent, EMIs, school fees, insurance — costs that barely change. Enter SIPs under planned savings, not here.
Groceries, fuel, dining, shopping — spending that fluctuates month to month.
Amount you deliberately set aside or invest each month.
Where your income goes
- Fixed₹38,00045%
- Variable₹22,00026%
- Savings₹15,00018%
- Surplus₹10,00012%
A small positive surplus is healthy — it absorbs surprises and can be swept into savings. A persistent negative surplus means your committed spending exceeds your income, so either trim variable expenses or revisit the savings target. This is a planning snapshot, not a record of actual spending.
A monthly budget is simply a plan for where your take-home pay goes before the month begins. This calculator splits your income into fixed expenses (rent, EMIs, insurance), variable spending (groceries, fuel, dining) and planned savings (SIPs, RDs, PPF), then shows what is left over as a surplus. A small positive surplus means your plan balances; a negative one means you are committing more than you earn. It also reports your total monthly expenses and your savings rate, so you can quickly judge whether your spending and saving are in healthy proportion to your income.
What your result means
- Aim for planned savings of 20%+ of take-home; any surplus on top should flow to goals and investments, not quietly inflate your lifestyle.
- Track for three months before trusting the averages; one month hides irregular costs like insurance, festivals, and repairs.
- Automate the savings transfer on salary day — budgets that rely on willpower at month-end usually leak.
How to use this calculator
- Enter your monthly take-home income — net salary after tax and PF, plus any side income.
- Add up your fixed expenses (rent, EMIs, fees, insurance) and enter the total; keep SIPs for the planned-savings step.
- Estimate your variable spending (groceries, fuel, dining, shopping) from the last two or three months.
- Enter how much you plan to save or invest each month before spending the rest.
- Check the surplus — if it is negative, trim variable expenses or lower the savings target until it turns positive.
The formula
Total expenses = Fixed + Variable. Surplus = Income − Fixed − Variable − Planned savings. Savings rate = (Planned savings ÷ Income) × 100. A positive surplus means the plan balances with room to spare; a negative one means you are over-committing.
Worked example
On a take-home income of ₹85,000 with ₹38,000 fixed expenses, ₹22,000 variable spending and ₹15,000 planned savings: total expenses = ₹38,000 + ₹22,000 = ₹60,000. Surplus = ₹85,000 − ₹38,000 − ₹22,000 − ₹15,000 = ₹10,000. Savings rate = (₹15,000 ÷ ₹85,000) × 100 ≈ 17.6%. The ₹10,000 surplus is a comfortable buffer; sweeping even half of it into the savings line would lift the savings rate above 23% without touching day-to-day spending.
When to use it
- Building a first monthly budget after a salary hike or a new job.
- Checking whether a new EMI or rent increase still leaves you with a surplus.
- Deciding how much you can safely raise your monthly SIP without going into deficit.
- Spotting lifestyle creep when variable spending quietly eats up the surplus each month.
Frequently Asked Questions
References & sources
- SEBI Investor — Management of income and expenses
- SEBI — Financial Education Booklet (savings, budgeting and financial planning)
How this calculator was checked: The budget arithmetic (Surplus = Income − Fixed − Variable − Planned savings; Savings rate = Planned savings ÷ Income × 100) was checked against SEBI investor-education material on budgeting and saving first, and re-run against the worked example on 2026-09-15 — the ₹10,000 surplus and 17.6% savings rate match the code’s output exactly. It is a planning snapshot of the figures you enter, not personalised advice; not reviewed by a registered financial planner.