Budget Calculator — 50/30/20 Rule
Calculate your ideal budget using the 50/30/20 rule. Enter your income and see exactly how to allocate your money for needs, wants, and savings.
Customize Percentages
| Category | % | Monthly | Annual |
|---|---|---|---|
| Needs | |||
| Wants | |||
| Savings |
Frequently Asked Questions
The 50/30/20 rule allocates your after-tax income: 50% to needs (rent, food, utilities, transport), 30% to wants (dining, entertainment, subscriptions), and 20% to savings and debt repayment. It's a simple framework popularized by Senator Elizabeth Warren.
In high cost-of-living cities, needs often exceed 50% — especially rent. Adjust the percentages to fit your reality. The key principle is to have a system: track spending, cap wants, and protect savings. Even 10% savings is better than zero.
Needs: rent, mortgage, groceries, utilities, minimum debt payments, basic transport. Wants: restaurants, streaming services, gym, vacations, new clothes, hobbies. The line can blur — a smartphone is a need; the latest model is a want.
At minimum, save 20% of take-home pay. Ideally, automate savings on payday so you never see the money. As income grows, increase savings rate rather than lifestyle — this is the fastest path to financial freedom.
About this calculator
The 50/30/20 rule is the simplest budget that works: spend half of your take-home pay on needs, 30% on wants and put 20% into savings and debt repayment. This calculator turns your monthly income into a rupee, dollar, pound or euro plan with monthly and annual figures for each part.
The percentages are editable, which matters because the rule is a starting point and not a law. If your rent is high you may need 60% for needs, and if you are saving for a house you may want 30% for savings. Change the split and see what it does to each bucket.
How to use it
- Enter your Monthly Take-Home Income, after tax.
- Choose your Currency.
- Adjust the Needs, Wants and Savings percentages if you want a different split. They should add up to 100.
- Press Build My Budget for the monthly and annual amounts.
The 50/30/20 split
Needs = Income × 50%, Wants = Income × 30%, Savings = Income × 20%. Needs are costs you cannot avoid, such as rent, groceries, utilities, transport to work, insurance and minimum loan payments. Wants are choices: dining out, streaming, travel, hobbies. Savings include emergency funds, investments and extra debt repayment.
Worked example
Take-home income of $5,000 a month
| Needs (50%) | $2,500 a month, $30,000 a year |
| Wants (30%) | $1,500 a month, $18,000 a year |
| Savings (20%) | $1,000 a month, $12,000 a year |
If your actual needs are $3,000, that is 60% of income. You can either trim wants to 20% and keep savings at 20%, or raise your income. Seeing it in numbers makes the trade-off clear.
Tips and common mistakes
- Base the budget on take-home pay, not on gross salary.
- Pay the savings first. Move the 20% on payday so that it does not get spent.
- Count loan EMIs as needs for the minimum payment and as savings for any extra payment.
- Review the split every few months. Income, rent and family needs change.
- If savings are under 10%, find the one big need or want to reduce rather than trimming everything.
Frequently asked questions
What is the 50/30/20 budget rule?
Spend 50% of after-tax income on needs, 30% on wants and 20% on savings and debt repayment.
Is the 50/30/20 rule realistic?
It works for many people on middle incomes. In high-cost cities needs can take more than half, so adjust the percentages.
What counts as a need?
Housing, groceries, utilities, basic transport, insurance, minimum debt payments and essential childcare.
Is a loan EMI a need or a saving?
The minimum payment is a need. Any extra amount you pay to clear debt faster counts toward savings.
Should I use gross or net income?
Net, meaning take-home pay after tax and deductions.
Can I change the percentages?
Yes. Edit any of the three boxes. They should total 100.