How to use the budget calculator
- Start with take-home pay. Use what actually lands in your bank account each month, after taxes and payroll deductions. If you are paid every two weeks, multiply one paycheck by 26 and divide by 12.
- Fill in each category from your last two or three months of bank and card statements. Averages are more honest than guesses.
- Look at the 50/30/20 split. The calculator groups your spending into needs, wants and savings and compares each with the rule of thumb.
- Adjust and plan. Change a number to see how cutting one expense or raising savings changes the picture. Your entries are saved only in this browser.
The 50/30/20 rule
A simple guideline for splitting take-home pay:
| Share | Category | Examples |
|---|---|---|
| 50% | Needs | Housing, utilities, groceries, transportation, insurance, minimum debt payments, childcare |
| 30% | Wants | Dining out, entertainment, hobbies, subscriptions, travel, shopping |
| 20% | Savings | Emergency fund, retirement, investing, extra debt payments |
In high-cost cities needs often exceed 50%. That is common; the goal is to know where the money goes and protect the savings share.
Worked example
With $5,000 take-home pay, needs of $3,250 (rent $1,500, utilities $250, groceries $600, transportation $400, insurance $200, minimum debt $300) are 65%. Wants of $550 are 11%. Planned savings of $500 plus the $700 left over make $1,200, or 24%. Needs are high, but the household still saves more than 20%, mostly because it spends little on wants.
Tips for a budget that sticks
- Pay yourself first. Move savings out on payday instead of saving what is left at the end of the month.
- Build an emergency fund of 3 to 6 months of needs before investing aggressively.
- Review subscriptions every few months; small monthly charges add up.
- Plan for irregular costs such as car repairs, gifts and annual insurance by setting aside a small amount each month.
Thinking about buying a home? Estimate the upfront cash with the closing cost calculator. Want to lower the utility line? Check appliance costs with the electricity cost calculator.
For general planning only, not financial advice. Nothing you enter is sent anywhere; it is stored only in this browser.
Frequently asked questions
What is the 50/30/20 budget rule?
Spend about 50% of take-home pay on needs, 30% on wants and put 20% toward savings and extra debt payments. It is a starting guideline, not a strict rule.
How much of my income should go to rent?
A common guideline is no more than 30% of gross income, or about a third of take-home pay. In expensive areas many people spend more and balance it with lower wants.
How much should I have in an emergency fund?
Most planners suggest 3 to 6 months of essential expenses. Single-income households and people with variable pay may want more.
How do I calculate my monthly take-home pay?
Look at your pay stubs. If you are paid every two weeks, multiply one net paycheck by 26 and divide by 12. Twice-monthly pay is simply two paychecks.
Is my budget data saved?
Only in your own browser on this device, so it is there next time you visit. Nothing is sent to our servers. Clear your browser data to remove it.
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Last updated October 2026.