A household budget works best when you build it from what your home really pays, not from a generic template. Here is how to do it from the bills up, including shared costs and yearly bills.
Written by Alex BPublished 13 November 2026
Money Detective is built around practical household money tools for Australians.
To build a household budget, add up the take-home pay coming in each pay, list every bill with how often it is charged, convert them all to the same pay period, and check the total is less than your income. Start from your real bills and bank statements, not from guesses. A one-income family on $2,700 a fortnight might end up with about $106 left to give a job, as the worked example below shows.
Add up the take-home pay for everyone who contributes, in the way they are paid. Include regular payments such as Centrelink or child support if they are part of your normal income. If anyone's pay changes from pay to pay, use the lower usual amount and treat anything extra as a bonus. For help, see the guides on irregular income and budgeting around Centrelink payments.
Look at the last two or three months of bank statements and note every regular payment. Then add the ones that do not show up monthly: quarterly utility bills, insurance, rego, school fees and annual subscriptions. The household bills checklist is a good prompt for the ones that are easy to forget.
Want every due date in one place? The Household Bill Tracker is an Excel spreadsheet that lists each bill with its due date, renewal date and true monthly cost, so nothing sneaks up on you.
This is the step that makes a household budget more accurate than a list. Group each cost by when it arrives:
Then convert everything to the same period, which should be how often you are paid. If you are paid fortnightly, the guide on budgeting fortnightly with monthly bills shows the sums, and budgeting for annual bills covers the yearly ones.
You do not need a long list. Rent and groceries are usually the biggest lines, so check them first with the guides on how much rent you can afford and a grocery budget. A starting point for many households:
| Group | Examples |
|---|---|
| Housing | Rent or mortgage, rates, strata, home insurance, maintenance |
| Utilities | Electricity, gas, water, internet, phone |
| Food | Groceries, school lunches, takeaway |
| Transport | Fuel, rego, car insurance, servicing, public transport |
| Family | School costs, childcare, activities, clothing |
| Health | Health insurance, doctors, dentist, medications |
| Debts | Credit cards, car loans, buy now pay later |
| Saving | Emergency fund, sinking funds, savings goals |
| Personal | Spending money, subscriptions, gifts |
| Cost | How it is charged | Per fortnight |
|---|---|---|
| Rent | $550 weekly | $1,100.00 |
| Groceries | Each fortnight | $450.00 |
| Electricity | $390 quarterly | $60.00 |
| Phone and internet | $180 monthly | $83.08 |
| Health insurance | $210 monthly | $96.92 |
| Car rego and insurance | $1,400 yearly | $53.85 |
| Fuel | Each fortnight | $160.00 |
| Kids' activities | Each fortnight | $90.00 |
| Savings | Each fortnight | $200.00 |
| Spending money | Each fortnight | $300.00 |
| Total planned | $2,593.85 | |
| Left to give a job | $106.15 |
The monthly and yearly bills are converted by multiplying by how many times a year they are charged and dividing by 26 fortnights. For example, $180 × 12 ÷ 26 is $83.08.
Put saving in the plan as its own line. If it is only whatever is left over, it often turns out to be nothing.
If more than one adult contributes, agree how shared costs are split before the budget starts. Common approaches are an equal split, a split in proportion to income, or a shared account that each person pays into. None is right for everyone. What matters is that both of you know the number.
The Couples Budget Planner is an Excel spreadsheet that splits shared expenses 50/50, by income or with custom percentages, if you want help with the sums.
Add up the plan for one pay and subtract it from your income. If it is a positive number, decide what job it will do. If it is negative, the plan costs more than you earn, and you have two options: reduce a cost, or raise your income. It is better to find that out on paper than on payday. Moneysmart's guide on how to do a budget follows a similar order, and its free budget planner is another option.
A budget is a living document. Each pay, look at how the plan compared with what happened. The budget vs actual guide shows how. Adjust the numbers that were wrong, and leave the rest alone. Do a bigger review when something changes: a new baby, a new job, a rent increase, a move.
The Free Fortnightly Budget is an Excel template with 23 categories and four pay cycles, so you can set up a plan for your household and see planned vs actual. You type your own amounts, and there is no bank login.
A done-for-you shortcut: Fortnightly Budget Plus is an Excel workbook with over 30 categories, a budget vs actual tab and savings goals, and it converts bills that do not arrive every pay into an amount for each pay. You can also paste in transactions from your bank statement and let it sort them into your categories. For the household's bills and renewals, the Household Bill Tracker keeps them in one place. If you would like the lot, the Complete Money Detective Toolkit bundles six Excel spreadsheets.
A quick look each pay, and a bigger review a few times a year or when something changes.
Some couples do, some keep separate accounts and pay into a shared one for bills, and some split costs by transfer. It depends on what you both find fair. The bank accounts guide looks at the options.
Start with the essentials and talk to providers early. If you are struggling with bills, this guide covers what to do first, and the National Debt Helpline (1800 007 007) offers free help.
This article provides general information only. It does not take into account your personal objectives, financial situation or needs, and it is not financial advice. Examples use invented figures. Money Detective's tools provide estimates and planning information. Consider your own circumstances, and seek independent advice if you need it, before making financial decisions.