50/30/20 Budget Calculator
Allocate after-tax income into needs (50%), wants (30%), and savings (20%) with examples.
By Konstantin Iakovlev · Updated September 2026 · Source: Elizabeth Warren & Amelia Warren Tyagi, All Your Worth (Free Press, 2005)
Needs (50%)
$2,250.00
Wants (30%)
$1,350.00
Savings (20%)
$900.00
50/30/20 Breakdown
| Needs (50%) — Housing, groceries, insurance, utilities, transport | $2,250.00 |
| Wants (30%) — Dining, entertainment, shopping, subscriptions | $1,350.00 |
| Savings (20%) — Emergency fund, retirement, debt payoff | $900.00 |
Use the 50/30/20 Budget Calculator above to calculate your results. Enter your values and see instant results — all calculations run in your browser.
Disclaimer: This calculator is for informational purposes only. Results are estimates based on the information you provide and the assumptions described on this page.
How It Works
The 50/30/20 rule splits your take-home pay into three buckets and gives you a budget you can run without tracking every transaction. Half of your after-tax income covers needs, a little under a third covers wants, and the rest goes toward building financial security. Its appeal is the lack of fine print: three numbers, a clear plan, and nothing to memorize. The split comes from Elizabeth Warren and Amelia Warren Tyagi's 2005 book All Your Worth, which calls the three buckets Must-Haves, Wants, and Savings.
Enter your monthly after-tax income and the tool divides it 50% to Needs, 30% to Wants, and 20% to Savings & Debt Repayment. On a $4,000 paycheck, that works out to $2,000 for needs, $1,200 for wants, and $800 set aside each month.
The line between wants and needs is where most budgets go sideways. Dressing up a want as a need quietly inflates the needs category and crowds out everything else, so be honest about which is which. Every dollar of savings and non-mortgage debt repayment belongs in the 20% bucket, and the split is worth revisiting whenever your income or expenses move.
Example: Sarah's Monthly Budget
- 1 Sarah's monthly after-tax income is $4,500.
- 2 The calculator applies the 50/30/20 rule: 50% of $4,500 for Needs, 30% for Wants, and 20% for Savings.
- 3 Her budget: Needs $2,250, Wants $1,350, Savings & Debt Repayment $900.
- 4 This breakdown helps Sarah allocate her income. Her $2,250 for Needs covers rent, groceries, and utilities, her $1,350 for Wants allows for dining out and entertainment, and the $900 goes to her emergency fund and retirement. If she enters what she actually spends under "Compare to your actual spending", the calculator flags any bucket that runs over its target.
Source: Elizabeth Warren & Amelia Warren Tyagi, All Your Worth (Free Press, 2005) · Last updated: September 2026
Frequently Asked Questions
How does the 50/30/20 budget rule work?
What counts as needs vs wants in the 50/30/20 budget?
What if I cannot keep my needs under 50% of income?
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