Budget Planner (50/30/20)
Plan your monthly budget using the 50/30/20 rule. Allocate income to needs, wants, and savings with customizable percentages and expense tracking.
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How do you like this tool?
How to use
Enter your monthly income
Type your total monthly after-tax income in the income field at the top of the tool.
Review the default allocation
The tool automatically splits your income into 50% for needs, 30% for wants, and 20% for savings. You can see the dollar amounts for each category.
Customize percentages
Adjust the percentage for each category if the default 50/30/20 split doesn't fit your situation. The tool warns you if percentages don't add up to 100%.
Add expense items
Click 'Add Expense' in any category to track individual expenses. Enter the name and amount. The progress bar shows how much of each category budget you've used.
Review your summary
Scroll down to see the budget summary with remaining amounts per category and whether you're over or under budget.
Use cases
Monthly household budgeting
"A family earning $6,000/month uses the tool to allocate $3,000 for rent, utilities, and groceries (needs), $1,800 for dining out and entertainment (wants), and $1,200 for emergency fund and retirement (savings)."
Student budget planning
"A college student with a $2,000/month part-time income splits their budget to cover tuition and textbooks, social activities, and start building a savings habit."
Debt payoff strategy
"Someone paying off debt adjusts the percentages to 50/20/30 — putting the extra 10% toward savings/debt repayment while reducing discretionary spending."
Freelancer income management
"A freelancer with variable income uses the tool each month with their actual earnings to maintain consistent budgeting discipline across good and lean months."
Couple merging finances
"A couple combines their incomes and uses the planner to agree on shared spending categories, tracking individual expenses within each bucket."
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Frequently Asked Questions
?What is the 50/30/20 budget rule?
The 50/30/20 rule is a simple budgeting guideline that suggests allocating 50% of your after-tax income to needs (rent, utilities, groceries), 30% to wants (dining, entertainment, hobbies), and 20% to savings and debt repayment.
?Can I change the default percentages?
Yes. While the tool starts with the classic 50/30/20 split, you can adjust each category's percentage to match your personal financial situation. The tool will warn you if your percentages don't add up to 100%.
?How do I track individual expenses?
Click the 'Add Expense' button in any category to add line items. Enter the expense name and amount. The progress bar will update to show how much of that category's budget you've used.
?Should I use gross or net income?
Use your net (after-tax) income — the amount you actually take home each month. This gives you a more accurate picture of money available to spend and save.
?What counts as a 'need' vs a 'want'?
Needs are essential expenses you can't avoid: housing, utilities, groceries, insurance, minimum debt payments, and transportation. Wants are non-essential spending that improves your lifestyle: dining out, streaming services, vacations, and hobbies.
?Is my financial data private?
Absolutely. All calculations run 100% locally in your browser. No income data, expense details, or personal information is ever sent to any server.
?Is the budget planner free to use?
Yes. The tool is completely free with no limits, no sign-up required, and no premium features locked behind a paywall.
?Can I use this with any currency?
Yes. The tool works with numerical values, so it applies to any currency. Simply enter your income in your local currency and the calculations will be accurate.
?What if my percentages don't add up to 100%?
The tool shows a warning when your percentages don't total 100%. While you can still use it, adjusting them to 100% ensures your full income is accounted for in your budget plan.
?Is the 50/30/20 rule suitable for everyone?
It's a great starting point, but not one-size-fits-all. People in high cost-of-living areas may need 60-70% for needs, while those aggressively saving may allocate 30-40% to savings. Customize the percentages to fit your goals.