Budget

Household Budget Calculator

Households have more than one paycheck and more than one kind of bill. Combine every income source — salaries, freelance work, benefits, rental income — and set them against the eight core household expense categories to see whether the whole household runs a surplus.

Results

Household income: $4,700.00; 2 sources
Household expenses: $5,320.00
Household deficit: $620.00; Expenses exceed combined income each month

Income sources and expense categories

Item	Type	Monthly amount
Primary salary	Income	$3,800.00
Freelance / second income	Income	$900.00
Housing	Expense	$1,650.00
Food & groceries	Expense	$900.00
Transportation	Expense	$560.00
Insurance	Expense	$420.00
Healthcare	Expense	$200.00
Childcare	Expense	$950.00
Utilities	Expense	$340.00
Other	Expense	$300.00

How to use this calculator

List every income source and its monthly amount. Rename the starter rows (Primary salary, Freelance / second income) and add more as needed.
Enter the household’s shared monthly expenses. For couples who split costs, enter the total expense, not just your share.
Childcare is its own category on purpose: for many families it is the second-largest bill, and hiding it inside "Other" distorts everything.
Check the combined result first, then the table — a household can be in surplus overall while one category quietly eats the raise.
Revisit after any income change; household budgets drift fastest when one earner’s hours change.

How the calculation works

household income = Σ every income source
household expenses = housing + food + transportation + insurance + healthcare + childcare + utilities + other
remaining = household income − household expenses

Nothing here is more exotic than addition across people. The discipline is completeness: a household budget is only as honest as its least-disclosed expense, so include the streaming service one person pays and the other forgot about.

Worked example

Input

Two incomes: $3,800 salary + $900 freelance. Expenses: housing $1,650, food $900, transportation $560, insurance $420, healthcare $200, childcare $950, utilities $340, other $300.

Result

Combined income: $4,700. Total expenses: $5,320. The household runs a $620 monthly deficit — most likely driven by childcare plus housing, which together consume 55% of income.

Assumptions and important notes

All amounts are monthly and after tax (benefits like SNAP can be counted at their monthly value).
Shared expenses are entered at full household cost; personal spending belongs in a separate individual budget.
Irregular costs (car repairs, school fees) should be smoothed into monthly averages, usually under "Other".

Frequently asked questions

How should couples split shared expenses?

Two common approaches: proportional to income (the earner making 60% pays 60% of shared bills) or 50/50 regardless. For this calculator, enter the full shared expense and the full income from both sides — the surplus then belongs to the household as a whole.

What if one income is irregular, like freelance work?

Use a conservative monthly average from the last 6–12 months, not your best month. A useful trick for irregular earners: budget from the lowest recent quarter and treat anything above it as savings, because it probably will not repeat.

Our childcare ends soon — how do we plan for that?

Run the calculator twice: once with childcare, once without. The difference is your coming monthly windfall — deciding in advance where it goes (debt, savings, activities) is one of the highest-leverage planning moves a family can make.

How is this different from the personal Budget Calculator?

The personal calculator assumes one income and nine personal categories. This one accepts unlimited income sources and separates childcare and food at household scale, because those two categories behave very differently when two adults and children share a budget.

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