50/30/20 Budget Calculator
The well-known split of take-home pay — 50% needs, 30% wants, 20% savings and extra debt payoff — turned into your monthly numbers, with room to compare what you actually spend.
A rule of thumb that earns its keep
Senator Elizabeth Warren's All Your Worth popularized the split: of take-home pay, roughly 50% to needs, 30% to wants, 20% to savings and extra debt payoff. It survives because it is checkable in five minutes and because the three buckets catch most budget failures by category.
Needs = 50% × take-home · Wants = 30% · Savings & extra debt = 20%
Example: on $5,200 take-home: needs target $2,600, wants $1,560, savings $1,040. Enter your actuals and the page lines them against the targets — most households discover one bucket wearing another's clothes (usually wants filed as needs).
Where the rule bends — honestly
In high-rent metropolitan areas, needs alone can claim 65% without a single extravagance; the rule then becomes a direction, not a grade — squeeze wants toward 15%, protect some savings line even if small, and let the numbers improve as income or housing changes. A rule you adapt beats a rule you abandon.
How this is calculated
Targets are exact percentages of the take-home figure you enter. When actuals are entered, each is also expressed as a percentage of income for direct comparison. Classification is yours: needs are obligations you cannot pause without consequence; wants are everything pausable; savings includes retirement contributions and above-minimum debt payments.
Frequently asked questions
Is the split on gross or net pay?
Net — take-home, after tax and payroll deductions. A 401(k) contribution deducted from pay counts inside the 20% savings bucket even though it never touched your bank account.
Where do minimum debt payments go?
Needs — they are obligations. Payments above the minimum go in the 20% bucket, which is why the bucket is labeled 'savings & extra debt'.
Gym, subscriptions, eating out — wants?
Wants, all — which is not a moral judgment, just accounting. The classic failure is not having wants; it is classifying them as needs and then wondering why the needs bucket never fits.
What if my needs genuinely exceed 50%?
Then the honest interim budget might be 65/20/15 or so while housing or income changes are in motion. The 50/30/20 frame still helps: it names which bucket is borrowing from which, and by how much.
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