Short answer
Build a household budget from what you actually spent. Collect three months of transactions, sort them into categories, set each limit at its three-month average, set aside a monthly share of irregular costs, share the budget with the other adults and review it monthly. An AI assistant such as Finman’s AI CFO does the adding up and summarising; you make the decisions.
Build the household budget in six steps
The method is the same with or without software: start from what the household actually spent, then decide what changes. An app with an AI assistant takes over the adding up and the first draft of the questions; the decisions stay with you.
- Step 1Collect 3 monthsEvery account that pays household costs
- Step 2Sort itCategories by your rules, merchant code or keyword
- Step 3Set limitsEach category starts at its average
- Step 4Fund the irregularOne twelfth of yearly costs each month
- Step 5Share itEvery adult logs into the same household account
- Step 6Review monthlyAI summary, 80% flags, forecast
Step 1: collect three months of transactions
Take every account that pays for the household: the joint account, the cards used for groceries and fuel, the account the rent leaves from. Three months smooths out one-off purchases and still reflects how you live now. You can type transactions, also offline, or import CSV, OFX or QFX files from RBC, TD, Scotiabank, BMO, CIBC, Tangerine, Wealthsimple Cash, EQ Bank, Revolut or Wise; monobank connects with a personal API token.
Step 2: sort every transaction into a category
Finman gives each imported transaction a category from the merchant category code where the bank file carries one, or from keywords in the description, in English, Ukrainian and Russian. Your own rules sort the rest: set one for the corner store or the daycare, and one Apply rules click files every matching expense left in Other. Split broad categories where it helps decisions; “Shopping” tells you less than clothing, home supplies and electronics apart. How the sorting works is explained in how transactions get categorized.
Step 3: set each limit from the average
Use the three-month average as the first limit, even when it looks high. A grocery limit set below what you really spend fails in week three. Cut later, one category at a time, after a month of tracking against it. A starting set for most households:
- 01Housing. Rent or mortgage, property tax, home insurance, utilities.
- 02Food. Groceries apart from eating out and delivery.
- 03Transport. Car payment, insurance, fuel, parking, transit.
- 04Children. Childcare, school costs, activities, clothes.
- 05Health and personal care. Prescriptions, dental, haircuts.
- 06Subscriptions. Streaming, phones, apps, memberships.
- 07Irregular costs. The sinking-fund line from step 4.
- 08Savings and debt. Emergency fund, goals, extra debt payments: budgeted before discretionary spending.
Step 4: fund irregular costs every month
Car insurance paid once a year, back-to-school, holiday gifts and a repair you know will come are predictable in total, just lumpy. Add up a year of them and set aside one twelfth each month. For example, $1,200 of yearly car insurance becomes $100 a month. The full method is in what a sinking fund is.
Step 5: share it with the household
A budget one person keeps for everyone tends to drift from what the others spend. In Finman one person creates a family, the others join with an invite code and their own login, and the owner of each account chooses what every member may do with it: view it, add transactions to it, edit it or delete it. Accounts you do not share stay visible only to you. Transactions a member adds to your shared account land in that account’s history, so your budgets and reports count them. Setups for different households are in the family finance app guide.
Step 6: review once a month
Fifteen to twenty minutes on a fixed day. Read the AI monthly summary, look at the categories Finman flagged, check the balance forecast for the coming months and change one thing.
Build the household budget from real numbers
Import three months, set limits from the averages and let the AI CFO write the monthly summary. Free during the open beta, no card.
Start the household budgetWhat the AI does in a household budget, and what rules do
“AI budgeting” covers several different mechanisms. In Finman they split like this:
| Job | How Finman does it | What you do |
|---|---|---|
| Categories | Your rules, then merchant codes, then keywords | Fix the odd one and add a rule |
| Budget alerts | A flag at 80% spent or when the pace will break the limit before the period ends | Decide: raise the limit or slow down |
| Repeating charges | Finds charges that repeat in your history and tracks next due dates | Cancel what nobody uses |
| Balance forecast | Projects up to 90 days ahead from the last 90 days of income, spending and recurring payments | Plan around a tight month |
| AI CFO chat | An OpenAI GPT model answers from your own accounts, budgets, goals, debts and recent transactions | Ask, check the answer against your numbers |
| Monthly summary and savings plan | Written by the same model from your data | Pick what to act on |
Nothing goes to the model until you open the AI page or send a message, and budgets, imports and reports work without it. Questions that suit a household: “Which categories went up most compared with last month?”, “How much do we spend on takeaway a month?”, “What would a $200 cut in eating out do to our savings goal date?” More on what the assistant is and is not in what an AI CFO is.
Mistakes that sink household budgets
- 01Limits from hope. A limit below the real average is a failure scheduled for week three. Start at the average.
- 02Only monthly bills. Leave out the irregular-costs line and the first annual premium breaks the month.
- 03One person does all the tracking. Give the other adults access to log spending, or the budget becomes one person’s opinion.
- 04Savings last. Whatever is left at month-end is usually nothing. Budget the savings line before discretionary spending; see pay yourself first.
- 05Too much change at once. One change per monthly review is enough to keep the budget improving without a revolt.
Frequently asked questions
How do I make a household budget?
Collect three months of transactions from every account that pays household costs, sort them into categories, set each limit from the three-month average, add a monthly line for irregular costs, share the budget with the other adults and review it once a month.
How can AI help with a household budget?
In Finman the AI CFO answers questions from your own accounts, budgets, goals, debts and transactions, writes a monthly summary and spending insights, and drafts a savings plan. Categories come from your rules, merchant codes and keywords, and budget alerts fire at 80% of a limit.
What categories should a household budget have?
Housing, food, transport, children, health and personal care, subscriptions, irregular costs and savings or debt cover most households. Split a category further when it helps you decide something.
How do I budget for irregular expenses?
Add up a year of irregular costs such as annual insurance, gifts and school starts, divide by 12 and set that amount aside every month. For example, $1,200 of yearly car insurance becomes $100 a month.
Can several people in a household use the same budget in Finman?
Yes. One person creates a family, the others join with an invite code and their own login, and the owner of the household account gives them the right to view it or add transactions. What they add counts in that account’s budgets.
Is Finman free for a household?
During the open beta every feature is free and no card is asked. After the beta, the Family plan is listed at $19 a month for up to 5 family members.
Your household budget, from your own numbers
Import a bank file or type last month in, set limits and invite the other adults. Free during the open beta, no card.
Get Started Free