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Budget Planner - Free Online Monthly Budget Calculator

Plan your monthly budget with income and expense tracking, category breakdowns, and popular templates like the 50/30/20 rule. All calculations happen in your browser — your financial data never leaves your device.

Budget Templates
Monthly Income
$
Expenses
$
$
$
$
$
Budget Summary
Total Income$5,000
Total Expenses$2,750
Surplus+$2,250

45.0% of income

Category Breakdown
Needs
$2,050 (41.0%)
Wants
$200 (4.0%)
Savings
$500 (10.0%)
50/30/20 Target
Needs (50%)$2,500
Wants (30%)$1,500
Savings (20%)$1,000
Learn More

What Is Budget Planning?

Budget planning is the process of creating a spending plan based on your income. It helps you understand where your money goes, identify areas to cut back, and allocate funds toward savings goals.

The most popular budgeting framework is the 50/30/20 rule: allocate 50% of after-tax income to needs (rent, groceries, utilities), 30% to wants (entertainment, dining out, subscriptions), and 20% to savings and debt repayment.

This tool lets you enter your actual income and expenses, categorize them, and instantly see how your spending compares to recommended allocations. Unlike spreadsheet-based budgets, you get real-time feedback and can experiment with different templates to find what works for your situation.

How to Use

  1. 1Enter your monthly income (after tax) in the income field.
  2. 2Add your expenses one by one — name each item, enter the amount, and select a category (Needs, Wants, or Savings).
  3. 3View the Budget Summary card for your total expenses, surplus/deficit, and percentages.
  4. 4Check the Category Breakdown to see how your spending distributes across needs, wants, and savings.
  5. 5Optionally click a template button (50/30/20, 70/20/10, etc.) to auto-populate recommended allocations based on your income.

When You Need This

Starting a new job

When your income changes, recalculate your budget allocations to ensure you're saving enough while covering all essential expenses.

Reducing debt

Use the budget planner to identify discretionary spending you can redirect toward debt payments, while keeping essential needs covered.

Planning for a big purchase

See how adjusting your wants and savings categories can free up money for a down payment, vacation fund, or emergency savings.

Sharing finances with a partner

Enter combined household income and expenses to create a transparent budget both partners can agree on.

Tips

1

Start with the 50/30/20 rule as a baseline

Even if your actual spending doesn't match perfectly, this framework gives you a healthy target to work toward gradually.

2

Track irregular expenses too

Include annual subscriptions, insurance premiums, and car maintenance by dividing the yearly cost by 12 and adding it as a monthly expense.

3

Review and adjust monthly

Your budget is a living document. Review it at month-end, note where you overspent, and adjust the next month accordingly.

4

Pay yourself first

Treat savings like a non-negotiable expense. Add it to your budget before allocating money to wants.

Examples

50/30/20 budget on $5,000 income

Standard allocation for a $5,000 monthly after-tax income.

Input

Income: $5,000

Output

Needs: $2,500 (50%) | Wants: $1,500 (30%) | Savings: $1,000 (20%)

Aggressive savings plan

Using 60/20/20 to maximize savings.

Input

Income: $4,000 with 60/20/20 template

Output

Needs: $2,400 (60%) | Wants: $800 (20%) | Savings: $800 (20%)

Limitations

  • This planner uses a simplified three-category model. Real budgets may need more granular categories.
  • Does not account for irregular income (freelancers, commission-based roles). Use your average monthly income.
  • Currency is displayed in dollars. Adjust mentally for your local currency.
  • Does not connect to bank accounts or automatically track spending.

Features

  • Dynamic expense list — add and remove items freely
  • Three-category system: Needs, Wants, Savings
  • Multiple budget templates (50/30/20, 70/20/10, 60/20/20, 80/10/10)
  • Real-time surplus/deficit calculation with percentage breakdown
  • Visual progress bars for each category
  • 50/30/20 target comparison against your actual spending
  • 100% client-side — no data uploaded, complete privacy

FAQ

What is the 50/30/20 rule?

The 50/30/20 rule suggests allocating 50% of after-tax income to needs (housing, food, utilities, insurance), 30% to wants (entertainment, dining, hobbies), and 20% to savings and debt repayment. It was popularized by Senator Elizabeth Warren in "All Your Worth."

What counts as a "need" vs a "want"?

Needs are expenses you must pay to live and work: rent/mortgage, groceries, utilities, transportation to work, minimum debt payments, and insurance. Wants are everything else: streaming services, dining out, gym memberships, vacations, and upgrades beyond basic needs.

What if my expenses exceed my income?

The planner will show a negative surplus (deficit). This means you're spending more than you earn. Look at your wants category first for items to cut or reduce, then consider whether any needs can be lowered (cheaper housing, reduced phone plan).

Is the 50/30/20 rule realistic for high-cost cities?

In expensive areas, housing alone may consume 40%+ of income. Consider the 70/20/10 template as a more realistic starting point, or focus on reducing the needs percentage over time by increasing income or finding more affordable options.

Is my financial data stored anywhere?

No. All calculations happen in your browser. Nothing is saved between sessions unless you manually note your budget elsewhere. Your financial information never leaves your device.

Last reviewed:

Your Privacy

All budget calculations happen entirely in your browser. No financial data is uploaded to any server. Your income and expense information never leaves your device.

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