pencilbudget.com – free budget calculators. For planning only, not financial advice.
🏠 Household budget calculator – split costs your way
One income or several. Enter what everyone takes home and what the household costs, then give every cost its own rule: split by income, equal shares, one person pays, or equal left over. Nothing you type leaves your browser.
💵 Take-home pay
After taxes and payroll deductions – what lands in the account
How should paychecks count toward a month?
Household take-home per month$0
⚖️ How do you split costs?
This is the rule for every cost set to “Default”. You can change the rule on any single cost below.
🧾 Monthly costs
Common household costs are listed without amounts – fill in yours, rename or remove any line. Yearly bills: divide by 12.
Household costs per month$0
📊 Your month
Take-home
$0
Costs
$0
Left over
$0
Costs are higher than take-home pay
Go through the lines above and see where there is room to cut. If you want to talk it through with someone, a nonprofit credit counselor can go over a budget with you – look for one accredited by the National Foundation for Credit Counseling (NFCC).
A household budget for everyone who shares costs
Updated October 1, 2026
Most budget calculators assume one paycheck. When people with different pay share a home – partners, roommates, a parent and a grown child – the real question is not only what the household spends but who pays what, and whether that still feels fair at the end of the month. This calculator answers both: the household total, and each person's share and what each person has left.
What a household spends depends on where you live, how many you are and how you live, so there are no averages filled in here. You enter your own numbers and see the result as you type.
Four ways to split a cost
📊 By income – each pays the same percentage of their pay
🤝 Equal shares – everyone pays the same
👤 One pays – the cost is one person's alone
🟰 Equal left over – everyone keeps the same amount
Paid every two weeks?
Pick “every two weeks” next to the pay and choose whether to budget on the yearly average or on a regular two-paycheck month. Weekly, twice a month and yearly salary work too.
Questions about sharing a household budget
There is no single right answer, and many households end up mixing rules. Splitting by income means each person pays the same share of their pay. Equal shares means everyone pays the same amount. One person can also cover a cost alone. Here you pick the rule per cost, so rent can be split by income while a subscription only one person uses is paid by that person.
The costs you mark as equal left over are divided so that everyone keeps the same amount after paying their shares – whoever has the most left pays first. It evens out differences in pay instead of only scaling with them. If those costs are not enough to even everyone out, the calculator says so and shows who pays them.
Every two weeks means 26 paychecks a year, so most months have two and two months have three. You can budget on the yearly average, or budget on two paychecks a month and treat the third as extra. Choose paid every two weeks next to the income and pick the option that matches how you plan.
Use take-home pay – the amount that actually lands in your account after taxes and anything else your employer deducts. That is the money the household budget has to cover.
Yes, in your own browser. Everything you enter is stored with localStorage on this device and is never sent to a server. It is still here the next time you open the page in the same browser.
Yes. Use the Excel button to download an .xlsx file you can keep working in, or Print / PDF for a one-page summary. No email address and no account needed.
Yes. Leave the household at one income and it works as a regular monthly budget. The split rules appear once you add another income.