50/30/20 Budget Calculator
Enter your monthly take-home pay. The calculator splits it into needs, wants, and savings under the 50/30/20 rule — or the variant that fits your situation.
| Needs (50%) — rent, groceries, utilities, insurance, minimum debt payments | — |
| Wants (30%) — dining out, streaming, hobbies, travel | — |
| Savings & extra debt payoff (20%) | — |
| Savings per year at this rate | — |
How the 50/30/20 rule works
Popularized by Senator Elizabeth Warren in All Your Worth, the rule splits after-tax income three ways:
- 50% needs — costs you cannot cancel this month: housing, groceries, utilities, transport, insurance, minimum debt payments.
- 30% wants — everything enjoyable but optional: restaurants, subscriptions, hobbies, vacations.
- 20% savings — emergency fund, retirement, investments, and debt payments beyond the minimum.
On $4,200/month take-home: $2,100 needs, $1,260 wants, $840 savings — $10,080 saved per year.
The sorting question that decides everything
The rule lives or dies on honest sorting. The test: "What happens if I stop paying this for one month?" Real consequences (eviction, hunger, repossession) = need. Discomfort = want. Common misfiles: gym memberships (want), premium phone plans (part want), car payments on a more-car-than-necessary vehicle (partly want).
When 50% for needs is impossible
In high-rent cities, needs often eat 60%+ of take-home pay. That is what the variants are for — the structure matters more than the exact ratios. Keep the order of priorities: cover needs, protect at least 10–15% savings, and let wants absorb the squeeze. If needs alone exceed 70% long-term, the fix is structural (housing, transport, income), not budgeting finesse.
Frequently asked questions
What is the 50/30/20 rule for a $4,200 monthly income?
$2,100 for needs, $1,260 for wants, and $840 for savings and extra debt payments. Over a year that savings line is $10,080.
Is 50/30/20 based on gross or net income?
Net (take-home) pay — after taxes. If retirement contributions already come out of your paycheck, count them toward the 20% savings bucket.
Do minimum debt payments count as needs?
Yes — minimums are contractual, so they are needs. Anything you pay beyond the minimum counts toward the 20% savings/debt bucket.
What if my needs are more than 50%?
Common in expensive cities. Use a 60/25/15 or 70/20/10 split short-term, protect some savings rate, and treat the overshoot as a signal about housing or transport costs rather than a personal failure.
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Last updated: 2026-07-08