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Formula

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Results

Needs (50%)
2,500
per month for essentials
Category Share Amount
Needs 50% 2,500
Wants 30% 1,500
Savings & Debt 20% 1,000
Total Income 100% 5,000

What Is the 50/30/20 Budget?

The 50/30/20 rule is a simple budgeting framework popularized by Senator Elizabeth Warren. It divides your monthly after-tax income into three categories: 50% for needs, 30% for wants, and 20% for savings and debt repayment. It works in any currency because it is based purely on proportions of your income.

Pie chart split into 50 percent, 30 percent, and 20 percent segments
The 50/30/20 rule divides income into needs, wants, and savings.

How to Use This Calculator

Enter your monthly take-home (after-tax) income. The calculator instantly shows how much should go to each category. Use your net pay — the amount that actually lands in your bank account — for the most realistic plan.

The Formula Explained

The math is straightforward multiplication:

$$\text{Needs} = \text{Income} \times 0.50$$ — rent or mortgage, groceries, utilities, insurance, minimum debt payments, transport.

$$\text{Wants} = \text{Income} \times 0.30$$ — dining out, hobbies, streaming, vacations, and other non-essentials.

$$\text{Savings \& Debt} = \text{Income} \times 0.20$$ — emergency fund, investments, retirement, and extra debt payments beyond the minimum.

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Income arrow splitting into three labeled streams
Monthly income flows into three budget categories by fixed percentages.

Worked Example

Suppose your monthly after-tax income is 5,000. Then $$\text{Needs} = 5{,}000 \times 0.50 = 2{,}500$$ $$\text{Wants} = 5{,}000 \times 0.30 = 1{,}500$$ $$\text{Savings} = 5{,}000 \times 0.20 = 1{,}000$$ The three amounts add back up to your full 5,000 income.

FAQ

Should I use gross or net income? Use net (after-tax) income, since that's what you actually have available to spend and save.

What if my needs exceed 50%? That's common in high-cost areas. Treat 50/30/20 as a target — trim wants first and gradually shift toward the ideal split.

Can I adjust the percentages? Yes. The rule is a guideline. If you can save more than 20%, do so; the categories should always sum to 100%.

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