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Budget Calculator (50/30/20 Rule)

Use the 50/30/20 rule to split your take-home pay into needs, wants, and savings. Adjust the percentages to match your personal financial goals and see how much you can spend each day.

Your monthly income after taxes and payroll deductions (net pay).

Percentage of income for essential expenses: housing, groceries, insurance, minimum debt payments, utilities.

Percentage of income for non-essential spending: dining out, entertainment, subscriptions, hobbies.

Percentage of income for savings, investments, and extra debt payments beyond minimums.

This budget calculator applies the popular 50/30/20 budgeting framework to your monthly net income. It divides your take-home pay into three categories: needs (housing, food, utilities), wants (entertainment, dining out, hobbies), and savings or debt repayment. You can customize the percentages to fit your situation and see your daily spending limit.

How It Works

Budget Allocation Formula

Category Budget = Monthly Net Income × Category Percentage / 100

Each budget category equals your monthly take-home pay multiplied by the percentage you assign to that category.

Needs Budget = Monthly Net Income × Needs %

Wants Budget = Monthly Net Income × Wants %

Savings Budget = Monthly Net Income × Savings %

Annual Savings = Savings Budget × 12

Daily Spending Limit = (Needs Budget + Wants Budget) / 30

Important Notes:

  • •The 50/30/20 rule was popularized by Senator Elizabeth Warren in the book 'All Your Worth.'
  • •Percentages are fully customizable — the default 50/30/20 split is a starting point.
  • •The daily spending limit divides the combined needs and wants budget by 30 days.
  • •This calculator does not validate that your percentages add up to 100%. If they exceed 100%, you are over-allocating.

Worked Example

A monthly take-home pay of $5,000 using the standard 50/30/20 split.

Inputs:

  • monthly Net Income:5,000
  • needs Pct:50
  • wants Pct:30
  • savings Pct:20

Result:

Your needs budget is $2,500, your wants budget is $1,500, and your savings allocation is $1,000 per month ($12,000 per year). Your daily spending limit for needs and wants combined is about $133.

Who Is This Calculator For?

  • budget beginners
  • young professionals
  • families
  • anyone managing personal finances

Frequently Asked Questions

The 50/30/20 rule is a simple budgeting framework that divides your after-tax income into three categories: 50% for needs (essential expenses), 30% for wants (discretionary spending), and 20% for savings and debt repayment. It provides a quick way to structure spending without tracking every dollar.
Needs are expenses required for basic living: rent or mortgage, groceries, utilities, insurance, minimum loan payments, and transportation to work. Wants are everything you could survive without: dining out, streaming subscriptions, gym memberships, vacations, and non-essential shopping.
Ideally your three percentages should total 100% to account for all of your income. If they total less than 100%, the remainder is unallocated. If they exceed 100%, you are planning to spend more than you earn, which leads to debt.
Use your net (after-tax) income — the amount actually deposited into your bank account. Taxes and mandatory payroll deductions are already removed, so you budget based on what you have available to spend and save.
Twenty percent is a solid starting point for most people. If you have high-interest debt, are behind on retirement savings, or have ambitious financial goals, you may want to increase the savings percentage to 25% or 30% by reducing wants.
If your income varies month to month, calculate the budget using your lowest typical monthly income as a baseline. In higher-earning months, direct the extra income toward savings or debt repayment rather than increasing your wants budget.

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Last updated: April 11, 2026