Free money tools
50/30/20 Budget Calculator
Enter your monthly take-home pay and we'll split it into needs, wants, and savings using the popular 50/30/20 rule. Works whether you're budgeting solo or pooling two incomes.
Free to use. Everything runs in your browser — nothing you type is sent anywhere.
How it works
The 50/30/20 rule is a simple way to divide your after-tax income into three buckets:
- 50% needs — the essentials you can't skip: rent or mortgage, utilities, groceries, insurance, minimum debt payments, transportation.
- 30% wants — the lifestyle stuff: dining out, streaming, hobbies, travel, the nice-to-haves.
- 20% savings & debt payoff — building your future: emergency fund, retirement, investments, and extra payments beyond the minimums.
Enter your monthly take-home pay (what actually lands in your account after taxes). Budgeting as a couple? Add both incomes together — Merger is built for two people sharing a life, no joint account required.
A worked example
Say your household brings home $5,000 a month. The 50/30/20 rule puts $2,500 toward needs, $1,500 toward wants, and $1,000 toward savings and debt payoff. It's a starting point, not a straitjacket — adjust the mix to fit your real life.
Key terms
- Take-home pay
- Your income after taxes and payroll deductions — the amount that actually hits your bank account. Use this, not your gross salary.
- Needs
- Expenses you genuinely can't avoid: housing, utilities, groceries, insurance, transportation, and minimum debt payments.
- Wants
- Things you choose to spend on that aren't strictly essential — dining out, subscriptions, travel, and hobbies.
- Savings & debt payoff
- Money that builds your future: an emergency fund, retirement, investments, and any debt payments above the minimum.
Frequently asked questions
What is the 50/30/20 rule?
It's a budgeting guideline that splits your after-tax income into 50% needs, 30% wants, and 20% savings and debt payoff. It's popular because it's simple to remember and flexible enough for most incomes.
Should I use gross or take-home pay?
Use take-home pay — your income after taxes and deductions. That's the money you actually control, so budgeting from it keeps the numbers realistic.
How does the 50/30/20 rule work for couples?
Add both partners' take-home pay together and split the combined total. With Merger you can see the whole household picture while keeping your own accounts — no joint account needed.
What if my needs are more than 50% of my income?
That's common in high-cost areas. Treat 50/30/20 as a target, not a rule — trim wants first, and aim to nudge needs down over time rather than beating yourself up.
Where does debt payoff fit in?
Minimum payments count as needs, while anything extra you throw at debt counts toward the 20% savings bucket — because paying down debt builds your future too.
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