Budget

50/30/20 Budget Calculator

The 50/30/20 rule splits your after-tax income into three buckets: 50% for needs, 30% for wants, and 20% for savings and extra debt payments. Enter your income to see the dollar amounts — and adjust the percentages if your reality needs a different split.

Results

Needs (50%): $2,100.00; Housing, utilities, groceries, insurance, minimum debt payments
Wants (30%): $1,260.00; Dining out, hobbies, travel, streaming — anything flexible
Savings & debt payoff (20%): $840.00; Emergency fund, investing, extra debt payments

Your allocation

Bucket	Monthly amount	Share of income
Needs	$2,100.00	50%
Wants	$1,260.00	30%
Savings & extra debt payoff	$840.00	20%

The 50/30/20 rule is a budgeting guideline popularized by Senator Elizabeth Warren — a starting point, not a requirement.

How to use this calculator

Enter your monthly after-tax income — what actually lands in your account each month.
Start with the classic 50/30/20 split to see the baseline dollar amounts for each bucket.
If your numbers are unrealistic (a high-rent city often breaks "needs ≤ 50%"), adjust the percentages to your situation.
Compare the Needs amount to your actual housing, utilities, groceries, insurance, and minimum debt payments.
Use the Savings bucket as a first-month target for automating transfers on payday.

How the calculation works

needs = income × 50%
wants = income × 30%
savings = income × 20%

Each bucket is a straight percentage of after-tax income. The power is in the classification, not the arithmetic: needs are obligations required to live and work, wants are everything optional, and savings includes investing and debt payoff beyond minimums.

Worked example

Input

$4,200 take-home pay per month, classic 50/30/20 split.

Result

Needs: $2,100 per month. Wants: $1,260 per month. Savings and extra debt payments: $840 per month — about $10,000 per year toward future you.

Assumptions and important notes

Income is after tax. Applying the rule to gross salary overstates every bucket.
Minimum payments on existing debt count as needs; extra payments count as savings.
The rule is a guideline, not a requirement — a 60/20/20 split in an expensive city is a legitimate adaptation.

Frequently asked questions

What counts as a "need"?

Rent or mortgage, utilities, groceries (the cooking kind, not restaurants), insurance, transportation to work, childcare so you can work, and minimum payments on debt you already owe. If skipping it would cause serious consequences, it is a need.

Is 50/30/20 realistic on a low income?

It gets harder as income falls, because needs have a floor — rent costs what it costs. If needs eat 65% of your income, run the split as 65/20/15 and treat reaching 20% savings as a long-term goal to grow into, not a month-one requirement.

Where does debt payoff go?

Split it: minimum payments are needs (they are contractual obligations), while extra payments toward the balance belong in the 20% savings bucket alongside investing and your emergency fund. This is why aggressive debt payoff and aggressive saving compete for the same 20%.

Can I use different percentages?

Yes — this calculator lets you change all three. Two sanity checks: keep wants below needs (that ordering is the discipline), and make sure the three percentages describe how you want to live, not just how you currently do.

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