Enter your monthly take-home pay, pick a rule (50/30/20, 60/20/20, or 40/20/40), and see exactly how much goes to Needs, Wants, and Savings. No spreadsheet required.
The 50/30/20 rule was popularized by Senator Elizabeth Warren in her book All Your Worth. It splits after-tax income into three buckets: 50% to Needs (rent, food, utilities, minimum debt payments), 30% to Wants (entertainment, dining, hobbies), 20% to Savings & extra debt payoff. It's a starting framework, not a law — adjust to 60/20/20 for high cost-of-living or 40/20/40 for aggressive savers.
After tax. The rule uses your take-home pay (net income) — the actual amount that lands in your bank account each month. The calculator defaults to after-tax. If you have a more complex situation (pre-tax 401(k) contributions, variable bonus), use your average monthly net of all that.
You're not alone — most urban renters are above 50% on Needs. Switch to the 60/20/20 preset, which is closer to reality. The trade-off: less Wants money, same 20% savings floor. For a long-term fix, attack the biggest Need (usually rent) — downsize, get a roommate, or refinance. The rule is a starting point, not a law.
Yes. The 20% Savings slice is your entire savings rate: emergency fund + retirement + extra debt payoff + investments. If you're behind on retirement, treat 15% of gross as the floor for that bucket and let the rest go to high-interest debt or an emergency fund first.
Zero-based budgeting assigns every dollar a job (Needs, Wants, Savings, specific goals) until income minus expenses equals zero. The 50/30/20 rule is a higher-level framework — three buckets, percentages. Use 50/30/20 to set the buckets, then optionally use zero-based budgeting inside each bucket to track individual line items.
Disclaimer: The 50/30/20 rule is a guideline, not financial advice. Your ideal split depends on income, debt, cost of living, dependents, and goals. For complex situations (variable income, high debt, business ownership), consult a fee-only financial advisor.