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50/30/20 budget calculator
Type your monthly take-home pay and see how the 50/30/20 rule splits it: half to needs, thirty percent to wants, twenty percent to savings and extra debt payments. Use it as a quick diagnosis of where your money is going, then read on for what the three buckets actually mean.
🏠 Needs (50%): for rent or mortgage, groceries, utilities, insurance, transport to work, minimum debt payments
🎬 Wants (30%): for dining out, streaming, hobbies, travel, upgrades
💰 Savings & extra debt (20%): for emergency fund, investing, payments above the minimum
How the 50/30/20 rule works
The rule comes from Elizabeth Warren and Amelia Warren Tyagi's book All Your Worth. It skips the forty-category spreadsheet and asks one question: of the money that actually lands in your account each month, how much goes to things you must pay, how much to things you choose, and how much to your future self?
- Needs, 50%. The bills that keep the lights on and the job held: housing, utilities, groceries, insurance, the commute, childcare, and the minimum payment on every debt. If you would face a real consequence for skipping it this month, it is a need.
- Wants, 30%. Everything that makes life nicer but would not hurt to pause: restaurants, subscriptions, hobbies, holidays, the nicer phone. A grocery run is a need; the takeaway is a want.
- Savings and extra debt, 20%. Emergency fund, retirement contributions, investing, and any payment above the minimum on a debt. This is the bucket that changes your position over time.
How to use the numbers
- Start from take-home pay, not salary. Use the amount that reaches your bank after tax and deductions. If you are paid hourly or your hours change, average the last three months.
- Add up last month's needs. Rent or mortgage, utilities, groceries, insurance, transport and minimum debt payments. Compare the total with the 50% figure above.
- Look at the gap. Needs under 50% means the rule fits comfortably and you can push savings above 20%. Needs over 50% is common and not a failure: it tells you the month is tight before wants are even counted.
- Decide what to move. The 30% wants bucket is the one you control fastest. Trimming it by a hundred dollars and sending that to savings changes nothing about your obligations and everything about your trajectory.
When 50/30/20 does not fit
The rule assumes housing is affordable relative to income. In an expensive city, or on one income supporting a family, needs can run to 60 or 70 percent, and the honest version of the split might be 70/15/15 for a while. That is still a budget, and still worth writing down. The rule is a diagnostic, not a law: if your needs are high, the useful move is to know exactly how high, and to protect even a small savings line so the month never ends at zero.
It also assumes a steady monthly income. If you are paid every two weeks, some months bring three checks; if you are paid weekly, some bring five. A monthly percentage hides that. Budgeting by the paycheck instead, and assigning each bill to the check that funds it, tends to fit those households better.
Frequently asked questions
Should I use gross or net income?
Net. The rule is about the money you can actually direct, so use take-home pay after tax, health premiums and retirement contributions. If retirement comes out before you see it, you are already saving some of the 20%.
What if my needs are more than 50%?
Write down the real split first. Then look at the two biggest needs, usually housing and transport, because small cuts to wants cannot close a large gap in needs. Protect at least a token savings amount so the habit survives until the numbers improve.
Do minimum debt payments count as needs or savings?
Minimums are needs, because missing them has consequences. Anything you pay above the minimum is a choice that improves your position, so it belongs in the 20% bucket alongside savings.
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Want the split to run itself every month?
Easy Budget for Beginners turns the buckets into a monthly plan with bills, a savings goal and a two-minute month close. Simple Budget is free forever if you would rather start there.