Budgeting, the useful version.

Start with what’s true, not what you’d like to be true.

Pull three months of bank statements and sort everything into three buckets. Fixed costs that arrive whether you like it or not: rent or mortgage, power, insurance, phone. Variable essentials: groceries, petrol, medical. And everything else.

Then compare the total against your income. If there’s a gap, you’ve found the problem. If there’s a surplus, decide where it goes before it disappears, because unassigned money tends to evaporate.

The part that makes budgets actually work is automation. Set up payments that move money to savings and bills the day you’re paid, so the amount left in your everyday account is genuinely spendable.

Review it every few months. Life changes and a budget from two years ago is fiction.

The rule suggests putting 50% of your after-tax income toward needs, 30% toward wants, and 20% toward savings and debt repayment.

It’s a useful mental model and a rough one. Its real value is showing that if your fixed costs are eating far more than half your income, no amount of skipping coffees will fix it. The problem is structural.

In New Zealand it strains, mainly because housing costs blow through the 50% bucket for a lot of households, particularly renters in the main centres.

Treat it as a diagnostic rather than a target. If you’re nowhere near it, that tells you something useful about where the pressure sits, which is more actionable than feeling bad about the percentages.

The common guidance is three to six months of essential expenses. Not three to six months of income, which is a larger and more discouraging number.

Where you land within that range depends on how stable your income is. Two secure salaries in a household can sit at the lower end. Self-employed, commission-based or single-income households want more.

If that sounds impossible, start smaller. A first target of one thousand dollars stops most everyday emergencies turning into credit card debt, and it’s achievable in a few months for most people.

Keep it somewhere separate from your everyday account, accessible within a day or two, and not somewhere its value can drop.

Worth saying: an emergency fund covers a broken car. It doesn’t cover eight months off work with a serious illness. That’s a different problem and a different solution.

Grocery costs vary a lot by household size, location, dietary needs and how much you buy pre-prepared. They’ve also moved considerably in recent years, so any figure dates quickly.

Stats NZ publishes household expenditure data and the food price index, which are the most reliable current sources. Sorted also has benchmarking tools.

Rather than chasing a national average, track your own for a month. Most households find there’s a gap between what they think they spend and what they do, and that gap is usually where the savings live.

The practical levers are the boring ones. Meal planning, a list, shopping less often, and not shopping hungry.

A commonly cited guideline is around 30% of your gross income on housing. Above that, households are often described as being under housing stress.

In much of New Zealand, that guideline is aspirational rather than realistic, particularly for renters and recent first home buyers in the main centres. Plenty of households sit well above it and manage.

The more useful test is what’s left. If your housing costs leave enough to cover everything else, save something, and absorb a surprise, the percentage matters less. If they don’t, the percentage is telling you something important.

If you’re borrowing, model your repayments at a higher interest rate than the one you’re offered. Rates move, and the repayment you can just manage today is the one that breaks you in two years.

The best one is the one you’ll actually open in month three.

Options fall into a few groups. Apps that connect to your bank and categorise spending automatically, which suit people who want visibility with minimal effort. Apps built around assigning every dollar a job, which suit people who want tight control. And a plain spreadsheet, which is free, endlessly customisable and works better than people expect.

Things worth checking: whether it connects to New Zealand banks, what it costs, and how it handles your data.

Your bank’s own app may already do more than you realise. Most now include spending breakdowns and savings buckets at no extra cost, which is enough for a lot of people.

Overspending is usually a systems problem rather than a willpower problem, and treating it as a character flaw doesn’t help anyone.

Things that tend to work. Separate your accounts so the money for bills and savings physically isn’t in the account you spend from. Use a 24 hour pause on anything above a threshold you set. Remove saved card details from your phone and browser, since friction is genuinely effective. Unsubscribe from marketing emails.

Then notice the pattern. Most people have specific triggers: stress, tiredness, boredom, a particular app, payday. Naming yours is more useful than a generic rule.

And build in some spending you don’t have to feel guilty about. Budgets that allow no enjoyment get abandoned, usually spectacularly.

A sinking fund is money you set aside gradually for a cost you know is coming but that doesn’t arrive monthly. Car registration and warrant, insurance premiums, Christmas, the next set of tyres, house maintenance.

These are the expenses that wreck otherwise sensible budgets, because they feel like emergencies when they’re actually entirely predictable.

Setting one up takes ten minutes. List the irregular costs you’ll face this year and roughly what each will cost. Add them up, divide by twelve, and move that amount into a separate account every month. When the bill lands, the money’s already there.

Most banks let you create multiple savings accounts or buckets for free, so you can run one per category and see at a glance where you stand.

It’s the single change that turns budgeting from constant firefighting into something calm.

Free, confidential, and genuinely useful.

MoneyTalks offers a free helpline staffed by financial mentors who’ll work through your situation with you and can deal with creditors on your behalf.

FinCap supports local financial mentoring services across the country, including here in Christchurch, if you’d rather sit down with someone.

Sorted.org.nz is run by Te Ara Ahunga Ora Retirement Commission and has free budgeting tools, calculators and guides built for New Zealand.

Citizens Advice Bureau provides free information and referrals. None of these are selling anything. If money is causing you stress, reaching out to one of them is a good week’s work in a single phone call.