50/30/20 budget calculator
The 50/30/20 rule splits after-tax (net) income into three buckets: 50% needs, 30% wants, and 20% savings & investments. Popularized by Elizabeth Warren in All Your Worth (2005), this page turns the percentages into dollar amounts instantly.
With net income $10,000 and 50/30/20:
- Needs (50%): $5,000
- Wants (30%): $3,000
- Savings (20%): $2,000/month → $24,000/year
What this tool calculates
- Monthly and annual amounts for each category
- A clear view of the 20% savings target
- Educational guidance only (not personalized financial advice)
Currency labels are cosmetic (USD, GTQ, BRL…): the math is pure percent of net income.
Formula
Needs = net_income × 0.50 Wants = net_income × 0.30 Savings = net_income × 0.20 Annual savings ≈ monthly savings × 12
Worked example (defaults)
Inputs: net income $10,000
- Needs = 10,000 × 0.50 = $5,000
- Wants = 10,000 × 0.30 = $3,000
- Savings = 10,000 × 0.20 = $2,000
- Annual savings = 2,000 × 12 = $24,000
- Reference annual income = 10,000 × 12 = $120,000
Scenario table (same engine rounding)
Amounts rounded to 2 decimals like the calculator UI.
| Net income | Needs (50%) | Wants (30%) | Savings (20%) | Annual savings |
|---|---|---|---|---|
| $3,500 | $1,750.00 | $1,050.00 | $700.00 | $8,400.00 |
| $5,000 | $2,500.00 | $1,500.00 | $1,000.00 | $12,000.00 |
| $7,500 | $3,750.00 | $2,250.00 | $1,500.00 | $18,000.00 |
| $10,000 | $5,000.00 | $3,000.00 | $2,000.00 | $24,000.00 |
| $12,000 | $6,000.00 | $3,600.00 | $2,400.00 | $28,800.00 |
| $15,000 | $7,500.00 | $4,500.00 | $3,000.00 | $36,000.00 |
| $20,000 | $10,000.00 | $6,000.00 | $4,000.00 | $48,000.00 |
What belongs in each bucket
| Bucket | % | Examples | Common mix-ups |
|---|---|---|---|
| Needs | 50% | Rent/mortgage, utilities, groceries, commute, insurance, minimum debt payments | Premium streaming, frequent dining out, gadgets |
| Wants | 30% | Entertainment, restaurants, subscriptions, non-essential clothes, travel, hobbies | Basic groceries or contractual minimums |
| Savings | 20% | Emergency fund, investments, extra principal payments, goal funds | Minimum payments (those stay in needs) |
When 50% is not enough
| Situation | Common variant |
|---|---|
| High-cost city / expensive housing | 60/20/20 or 55/25/20 |
| Aggressive saver | 50/20/30 |
| High-interest debt priority | Push more than 20% into “savings” via extra paydowns |
| Very low income | Start with any positive savings % and raise it |
To compare 50/30/20 vs 70/20/10 side by side, use the monthly budget calculator.
Practical tips
- Always enter net income (after tax and mandatory deductions).
- Be honest about needs vs wants: cable upgrades are usually wants.
- Automate the 20% on payday (“pay yourself first”).
- Recalculate when income or rent changes.
- Housing rule of thumb: often ~30% of net inside the needs bucket.
Educational tool only. Not financial, tax, or legal advice. Percentages are guides; dependents, debt, and location may require a different split.
FAQ
Allocate 50% of net income to needs, 30% to wants, and 20% to savings and investments (or extra debt payments). It is a starting framework, not a law.
With the calculator defaults: $2,000/month and $24,000/year (20% of net).
Net (after-tax). Gross income overstates every bucket and hides payroll deductions.
Cut fixed costs or temporarily use 60/20/20. You can also try 70/20/10 on the monthly budget page.
Minimum payments usually count as needs. Extra principal payments count toward the 20% savings bucket because they reduce future obligations. Pair with the debt payoff calculator.
Build a 3–6 month emergency fund, then goals and investments. Size contributions with savings goal and project growth with compound interest.
This page is the classic fixed 50/30/20 split. The monthly budget calculator also supports 70/20/10 and more category framing.