50/30/20 Budget Calculator
Split your monthly after-tax income into needs, wants, and savings.
This calculator runs entirely in your browser. Nothing you type is uploaded or stored.
How to use this tool
Enter your monthly take-home pay, which is the money that actually lands in your account after taxes and other paycheck deductions. Then press Calculate Budget. This 50 30 20 budget calculator splits that figure into three buckets and shows the exact dollar amount for each one. You can copy the result or download it as a plain text file to keep alongside your monthly spending analysis.
The formula behind the 50/30/20 rule
Wants = income × 0.30
Savings and debt payoff = income × 0.20
The 50/30/20 rule is a simple household budget percentage tool. It says half of your after-tax income should cover needs (rent or mortgage, utilities, groceries, insurance, minimum loan payments), 30 percent can go to wants (dining out, hobbies, subscriptions, travel), and 20 percent should go to savings and paying down debt faster than the minimum. It is a financial allocation rule of thumb, not a strict law, so adjust the splits to fit your real costs.
A real example
Say your monthly after-tax income is $4,000. The calculator multiplies that by each percentage: needs come to $2,000 (50 percent), wants come to $1,200 (30 percent), and savings and debt payoff come to $800 (20 percent). Those three amounts add back up to the full $4,000, giving you a clear monthly spending analysis you can compare against what you actually spend.
Common questions
Should I use gross or after-tax income?
Use your after-tax (take-home) income, the amount that reaches your bank account. The 50/30/20 rule is built around money you can actually spend, not your pre-tax salary.
What counts as a need versus a want?
Needs are expenses you cannot skip without serious consequences, such as housing, basic utilities, groceries, transportation to work, and minimum debt payments. Wants are nice-to-haves like restaurants, streaming services, and vacations.
What if my needs are more than 50 percent?
That is common in high cost areas. Treat the rule as a target, not a hard limit. You may trim the wants bucket to keep some savings going while you work on lowering fixed costs or raising income.
Does the 20 percent include retirement contributions?
Yes. The savings bucket covers retirement accounts, an emergency fund, other savings goals, and any extra debt payments beyond the minimums you already counted as needs.
Is this calculator financial advice?
No. This is an educational estimate based on a popular budgeting guideline. For decisions tailored to your situation, talk to a qualified financial professional.