Budget Planner Calculator
Build your monthly budget with the 50/30/20 framework — 50% needs, 30% wants, 20% savings — and see how your spending stacks up.
The 50/30/20 rule is the simplest proven budget framework: half your after-tax income for needs (housing, food, transport), 30% for wants (dining, entertainment), and 20% for savings and debt payoff. Enter your income and actual spending to see where you stand.
Monthly after-tax income
— target
— target
— target
Needs
Wants
Savings
Budget check
The 50/30/20 rule explained
Created by Elizabeth Warren and Amelia Warren Tyagi, the 50/30/20 rule divides your after-tax (take-home) income into three simple buckets. 50% goes to needs — the things you can't easily live without: rent or mortgage, groceries, utilities, transport to work, health insurance, and the minimum payments on your debts. 30% goes to wants — the lifestyle spending you choose: dining out, streaming and other subscriptions, entertainment, shopping, hobbies, and travel. 20% goes to savings and extra debt repayment — your emergency fund, retirement contributions, investments, and any payment above the minimum on high-interest debt.
To apply it, start from your monthly take-home pay, multiply by each percentage to get a target, then total your real spending in each bucket and compare. If a category is over target, the fix is almost always to trim wants first, since needs are hard to change quickly and cutting savings defeats the purpose. The goal isn't perfection in a single month — it's steadily moving your real numbers toward the targets and automating the 20% so it leaves your account before you can spend it.
The percentages are a starting point, not a rule of law. In high cost-of-living areas, needs alone can swallow 60–70% of income. When that happens, don't abandon the framework — rebalance it. Push wants down as far as is realistic and protect whatever savings rate you can, even if it's 10% instead of 20%, while working to raise income over time. A budget you can actually keep beats a perfect one you abandon.
- 1Needs (actual / 50% target)—
- 2Wants (actual / 30% target)—
- 3Savings (actual / 20% target)—
- 4Left over—
- Needs
- Non-negotiable expenses: housing, food, utilities, transport, minimum debt payments, health insurance.
- Wants
- Discretionary spending you choose but could reduce: dining, entertainment, shopping, subscriptions, hobbies.
- Savings rate
- The percentage of your net income that goes to building wealth or reducing debt beyond minimums. Recommended minimum: 20%.
- After-tax income
- Your take-home pay — what actually lands in your account after income tax and mandatory deductions. The 50/30/20 percentages are always applied to this figure, never to gross pay.
🔢 Worked example
With $4,000 net monthly income, the 50/30/20 rule sets $2,000 for needs, $1,200 for wants, and $800 for savings & debt. If your real needs total $2,400, you're $400 over the 50% target.
Frequently asked questions
What is the 50/30/20 rule?
Should I use gross or net income?
What if my needs are more than 50%?
Does extra debt payoff count as savings?
What counts as a 'need' vs a 'want'?
Is 20% savings realistic?
Are my results saved? Do I need an account?
How do I track my progress over time?
About this calculator
The budget planner helps you see where your money goes each month using the 50/30/20 rule, one of the simplest and best-known personal-finance methods. You enter your take-home income and your spending by category, and the tool instantly shows how much is left over or missing at the end of the month.
Beyond the bottom line, it compares your actual spending against the ideal targets for needs, wants and savings, showing the share of income committed to each block. It is a fast way to spot overspending, find room to save and adjust the plan before the budget runs into the red.