Tool · Money
Type in what comes home each month and what goes out in each part of your life, and the calculator shows every category in dollars and as a share of the whole — beside what the average household told the government it spends.
Where does each number come from?
- Take-home pay for the month
- The amount that lands in your account, not the salary on your offer letter. Your pay stub calls it net pay. If you’re paid every two weeks, most months have two paychecks and two months a year have three; the budgets-and-timing piece is about that, and this calculator uses the two-paycheck month.
- Rent or mortgage
- Your lease, or your mortgage statement’s total payment including any tax and insurance collected with it.
- Utilities
- Electric, gas, water, trash, internet and phone — last month’s bills, or the average your utility prints on the bill. Some months run higher than others, and a twelve-month average is on most utility websites.
- Groceries, and eating out
- Two boxes, because the government’s survey splits them and because they move independently. Your bank or card app usually totals each for the month.
- Getting around
- Car payment, gas, insurance, parking, transit passes. The survey lumps them together, so the calculator does too.
- Insurance and health
- Health premiums that come out of your paycheck are already gone before take-home, so they don’t go here; the box is for what you pay directly — car and renters insurance, prescriptions, copays.
- Debt payments
- Minimum payments on cards and loans, from the statements. Your mortgage or car payment already sits in its own box.
- Saving and investing
- What you move into savings or a retirement account from take-home. A 401(k) contribution comes out before take-home, so it doesn’t go here either.
- Everything else
- Clothes, subscriptions, gifts, haircuts, the category the survey calls miscellaneous. Whatever’s left after the boxes above is either here or unaccounted for, and the calculator shows you which.
What moves the answer?
Let’s say $4,000 comes home each month and all of it goes out. Rent at $1,400 is 35% of it; the average household in the government’s survey put 33% of its spending toward housing, so the two are close. Groceries at $500 and eating out at $300 together are 20%, against the survey’s 13% — and that gap is about $280 a month, or around $3,400 a year, which is the kind of figure that’s easier to see as dollars than as seven percentage points.
The shares only tell you where you differ from the average; they don’t say what to do about it. A household with no car has a transportation share near zero and a bigger share somewhere else, and both are fine. What the comparison does is point at the one or two boxes worth a second look, and the dollar gap tells you how much is in them.
What does the calculator take as given?
- The comparison shares
- Come from the Bureau of Labor Statistics’ Consumer Expenditure Survey for 2024, released 19 December 2025. The average household spent $78,535 that year: 33.4% on housing (20.8% of it shelter, 6% utilities), 12.9% on food (7.9% at home, 5% out), 17% on transportation, 7.9% on healthcare, 12.5% on insurance and pensions, 4.6% on entertainment, 2.5% on clothes, 2.9% on giving, 2% on education, and the rest on personal care, alcohol, tobacco, reading and miscellany. The 2025 survey is due 29 October 2026.
- Shares are of spending, not of income
- The survey reports what households spent as a share of everything they spent. The calculator does the same with your numbers — each box as a share of the total you typed — so the two columns are comparable. Your take-home minus that total is the “left over” line, and the survey has no equivalent for it.
- The average household isn't a household
- It’s one-person apartments and five-person houses, renters and owners, in every state at once, averaged together. The shares are useful for seeing the shape of spending, and nobody matches them.
- What's left out
- Irregular bills — car insurance paid twice a year, holidays, a deductible — which a monthly view flattens. Pay timing, which is its own problem and has its own piece. Taxes and paycheck deductions, which are gone before take-home and so aren’t in either column.
The four-thousand-dollar month and the fourteen-hundred-dollar rent are one made-up household; your own figures are on your pay stub, your lease and last month's statements, and the calculator only knows what you type into it.
Sources
- U.S. Bureau of Labor Statistics, Consumer Expenditures — 2024, news release USDL-25-1586, released 19 December 2025 — Table A (average annual expenditures and income) and Table B (shares).
- U.S. Bureau of Labor Statistics, Consumer Expenditure Surveys, Table 1101, 2024 — shelter, utilities, food-at-home and food-away shares.
- Bills & Beans, Budgets Fail on Timing, Not on Math — the pay-timing piece linked above.