The 50/30/20 rule splits your take-home pay into needs, wants and savings. Here is how it works on a fortnightly pay, and what to do when rent makes the numbers hard to hit.
Written by Alex BPublished 13 November 2026
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The 50/30/20 rule says to spend about 50% of your take-home pay on needs, 30% on wants and put 20% towards savings and debt repayments. On a fortnightly take-home pay of $2,800, that is $1,400 for needs, $840 for wants and $560 for savings. In Australia, rent or a mortgage often pushes needs towards 60% or 65%, so most households end up adjusting the split. This guide shows how, one pay at a time.
The rule was popularised by a US book, All Your Worth, by Elizabeth Warren and Amelia Warren Tyagi. It is a rule of thumb and not an Australian standard, and the percentages are a starting point to test against your real bills. Use your take-home pay, the amount that actually lands in your account, and not your gross salary.
Some items sit on the line. Groceries are a need, but takeaway is a want. A basic phone plan is a need, but the top-tier plan with a new handset is partly a want. Be honest, and expect to move a few items as you go.
Take your take-home pay for one pay and multiply it by 0.5, 0.3 and 0.2:
For $2,800 that gives $1,400, $840 and $560. If you are paid weekly or monthly, use the same method with that pay.
List your bills and spending for one pay and put each item in a bucket. Bills that do not land every pay, such as quarterly electricity or yearly rego, need a share of their cost in every pay. Multiply the bill by how many times a year it is charged and divide by 26 for a fortnightly pay. A $390 quarterly bill is $60 a fortnight. The fortnightly budget with monthly bills guide explains why.
| Bucket | Rule says | This household | Share of pay |
|---|---|---|---|
| Needs | $1,400 | $1,720 | 61% |
| Wants | $840 | $700 | 25% |
| Savings | $560 | $380 | 14% |
| Total | $2,800 | $2,800 | 100% |
The $1,720 of needs is rent of $900, groceries $400, utilities $100, transport $160, phone and internet $70 and insurance $90, all per fortnight. Rent alone is 32% of the pay. This household cannot reach 50% on needs, so it has trimmed wants to $700 and still saves $380 a fortnight, which is about 14%.
That is a perfectly reasonable result. The rule is useful because it shows you where you are, not because every household should match it.
Housing is usually the biggest cost, and rent that is a third of your take-home pay leaves little room under the 50% limit once groceries, utilities and transport are added. Households with kids, a car loan or a single income often find needs are higher still. If that is you, it does not mean you are doing it wrong.
Keep the idea and change the numbers. Common variations are:
| Split | Needs | Wants | Savings | On $2,800 |
|---|---|---|---|---|
| 60/25/15 | 60% | 25% | 15% | $1,680 / $700 / $420 |
| 65/20/15 | 65% | 20% | 15% | $1,820 / $560 / $420 |
| 70/15/15 | 70% | 15% | 15% | $1,960 / $420 / $420 |
Protect savings first where you can, even at 5% or 10%, and trim wants before you give up on saving. Moneysmart's guide to doing a budget is a good companion if you want to check each bill.
The Free Fortnightly Budget is an Excel template with 23 categories and four pay cycles (weekly, fortnightly, every 4 weeks or monthly), where you enter planned and actual amounts and see what is left. You can group the categories into your own needs, wants and savings.
A done-for-you shortcut: Fortnightly Budget Plus is an Excel workbook with over 30 categories, a budget vs actual tab and savings goals. You set an amount for each category and compare it with what you spent, so you can see whether needs are running at 61% or 70%. If you are new to pay-cycle budgeting, start with how to budget fortnightly.
Yes. Apply the percentages to one pay, and give bills that do not arrive every pay a share of their cost.
Take-home pay. It is the money you actually have to plan with.
Adjust the split, for example to 60/25/15, and protect a smaller amount of savings. Then look for needs that can come down over time.
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.