50/30/20 Budget Calculator
Split your monthly take-home pay into needs, wants and savings, compare the targets against what you actually spend, and try 70/20/10 or a custom split.
50/30/20 Budget Calculator
Your monthly take-home pay
The money that actually lands in your account each month, after tax. If savings comes out of your pay before you see it (a 401(k) or an automatic transfer), add it back in here and count it in the savings bucket, otherwise it disappears from the split.
Choose your split
50% needs, 30% wants, 20% savings and debt above the minimum, applied to take-home pay.
Total: 100%
Reality check (optional)
Optional. Leave both blank if you just want the targets. A rough figure from last month is enough to be useful. Savings is worked out as whatever is left over, so there is no third field here.
Nothing entered yet. Type your monthly take-home pay and the three targets fill in as you go.
| Bucket | Target | Per week | You spend | % of income | Over / under |
|---|---|---|---|---|---|
| Needs | — | — | — | — | — |
| Wants | — | — | — | — | — |
| Savings | — | — | — | — | — |
The three targets always add up to the income you entered. Weekly figures are the monthly amount multiplied by 12 and divided by 52, which is an equivalent rather than a claim about your pay dates.
Target vs. what you actually spend
The reverse view
How the 50/30/20 rule splits your take-home pay
Half your take-home pay goes to needs, three tenths to wants, one fifth to savings and to any debt payment above the minimum. Needs are the things that keep you housed, fed, insured and able to earn: rent or mortgage, utilities, groceries, transport to work, insurance, and the minimum you have to pay on any debt. Wants are everything else you choose to buy. The last 20% is the only bucket that improves your position rather than maintaining it, which is why it gets protected first when the numbers get tight.
On $4,000 of monthly take-home pay that is $2,000 for needs, $1,200 for wants and $800 for savings, or roughly $462, $277 and $185 a week. The weekly figures are worth a glance even if you are paid monthly, because a week is the window most people actually spend against.
Use net pay, not gross. The rule was written for the money that reaches your account, and gross pay includes amounts you never get to allocate. One exception is worth the effort: if savings leaves your pay before you see it (a 401(k) contribution, a share plan, an automatic transfer), add it back into the income figure and count it inside the 20%. Otherwise the saving you already do disappears from the split, and the calculator tells you to start doing something you are already doing. The rule itself comes from Elizabeth Warren and Amelia Warren Tyagi's 2005 book All Your Worth, where they called it the balanced money formula.
The gap between the target and what you actually spend
Multiplying your income by 0.5 is not the hard part. The useful number is the distance between that target and what leaves your account, which is what the two optional fields are for. Fill both in with rough figures from last month and every row gains three columns: what you spend, what share of your income it takes, and the over or under gap in dollars.
Savings is worked out as the residual (income minus needs minus wants) rather than asked for, because that is what actually happens to it: savings is whatever the month leaves behind unless you move it first. When that figure goes negative the page says so in the alert style and the verdict changes, because spending past your income is a different problem from getting the ratio wrong, and it comes first.
The reverse figure answers the question the target quietly raises. If your needs run at $2,600 a month, the 50% line implies an income of $5,200. Seeing that number next to your actual pay is a blunt way to tell a budgeting problem from a housing-cost problem, and the two have very different fixes. If your take-home pay is different every month, a single income figure will not hold, and the irregular income budget calculator is the better starting point.
When to use 70/20/10 or 60/20/20 instead
Most 70/20/10 calculators label the buckets needs, wants and savings. That is the wrong label. The 70% covers all your living costs, with needs and wants sitting together in one bucket. The 20% goes to savings, and the 10% goes to debt payoff or giving. Merging the two spending categories loses information, and you buy something real with it: you never again have to decide which side of the line a haircut falls on. This page labels those buckets correctly and adds your two entries together when you switch to it.
60/20/20 keeps needs and wants apart but concedes that fixed costs can run past half your pay. It suits high-rent cities and single-income households, and it still protects a fifth of your income for savings and debt. The custom split is the escape hatch for everything else: three editable percentages that have to add up to 100 before the numbers appear, with no silent rescaling when they do not.
Whichever ratio you land on, the order of priority survives even when the percentages do not: cover the needs, fund the savings bucket next, and let wants take what is left rather than the other way round. If wants is the bucket that keeps overshooting, the subscription cost calculator is the fastest place to find out why, and the biweekly paycheck budget calculator handles the two months a year that carry three paychecks. If you would rather derive the split from your real bills than from two summary figures, the line-item monthly budget calculator is the next step up from this page.
Turning the split into category caps you actually see
A split is only worth anything if the numbers show up at the moment you are about to spend. Three targets in a browser tab on the first of the month will not survive contact with week three. Budget44 turns them into recurring monthly budgets per category, with progress-against-limit rows that show how much of each cap is gone, so the wants bucket stops being an abstraction some time around the middle of the month.
The calendar view shows recorded against projected activity, which matters when your needs bucket is mostly fixed bills that have not landed yet, and saving goals give the 20% somewhere to go other than an account you avoid looking at. Everything is entered by hand and stored on the device: no account, no cloud sync, no bank connection, and amounts held as integer minor units so the totals stay exact to the cent.
Got your three numbers? Set 50/30/20 category caps in Budget44 and see whether they hold through the month.
Frequently Asked Questions
Common questions about 50/30/20 budget calculator
Is the 50/30/20 rule based on gross or net income?
Net. The rule is applied to take-home pay, after tax and payroll deductions, because gross pay includes money you never get to spend and budgeting on it overstates every bucket. One wrinkle: if savings leaves your pay before you see it (a 401(k) or an automatic transfer), add it back into the income figure and count it inside the savings bucket, otherwise it vanishes from the split entirely.
What if my needs are more than 50% of my income?
Common, and usually about rent rather than discipline. Adjust the ratio instead of abandoning the method: start at 60/20/20 or 70/20/10, keep the order of priority, and treat 50/30/20 as the direction of travel rather than this month's target. The preset chips on this page exist for exactly that.
Does debt repayment count as a need or as savings?
Both, split by amount. The minimum payment you have to make to stay current is a need, because missing it has consequences. Anything you pay above that minimum belongs in the 20% savings and debt bucket, since paying it is a choice to build your position rather than a bill you have to clear.
What counts as a need and what counts as a want?
A need is what keeps you housed, fed, insured, healthy and able to earn: rent or mortgage, utilities, groceries, transport to work, insurance, minimum debt payments. Everything else is a want. For the grey areas, ask what the bare-minimum version of the thing would cost: that part is the need, and the rest is a want even if you keep paying it. Groceries are a need and restaurant meals are a want; a basic phone plan is a need and the top tier is not.
How is 70/20/10 different from 50/30/20?
70/20/10 stops separating needs from wants: 70% covers all your living costs together, 20% goes to savings, and 10% goes to debt payoff or giving. It is less precise and far less work. It suits people whose needs already run past 50% and who would rather not argue with themselves about which side of the line a purchase falls on. This calculator labels those three buckets correctly, which most 70/20/10 calculators do not.
Does the 50/30/20 rule still work when rent is this high?
As a shape to aim at, yes; as a hard rule, often not. When housing alone eats a third of take-home pay, 50% for all needs is arithmetic rather than willpower. Shift the ratio, protect the savings percentage as far as you can, and revisit it when income or rent moves. A split you can actually hold at 15% savings beats a perfect one you abandon in week three.
How do I apply 50/30/20 to weekly or biweekly pay?
Work out the monthly figure first, then divide. This calculator shows the weekly equivalent of each bucket (monthly multiplied by 12 and divided by 52) beside the monthly target. If you are paid every two weeks, remember that two months a year hold three paychecks, which is what the biweekly paycheck budget calculator on this site is built to handle.
Where did the 50/30/20 rule come from?
Elizabeth Warren and her daughter Amelia Warren Tyagi set it out in their 2005 book All Your Worth: The Ultimate Lifetime Money Plan, where they called it the balanced money formula. It spread because it is the rare budgeting rule you can hold in your head.