50/30/20 Budget Calculator
Enter your take-home pay. See how much should go to needs, wants, and savings, with real NZ cost context.
How your 50% "needs" breaks down
Based on NZ average costs, your real numbers may vary by city and lifestyle.
What 20% savings gets you
Excludes interest. Actual returns will be higher if you're earning interest in a savings account or term deposit.
Want this to happen automatically?
PayDay detects when your pay lands and splits it into your needs, wants, and savings accounts, no manual transfers, no willpower required.
Join the PayDay waitlistAbout the 50/30/20 rule in NZ
The 50/30/20 rule was popularised by US Senator Elizabeth Warren in her book All Your Worth. It's a simple framework for dividing your take-home pay into three buckets:
- 50%, Needs: things you can't avoid (rent, groceries, power, transport, insurance, minimum debt payments)
- 30%, Wants: discretionary spending (eating out, subscriptions, hobbies, new clothes)
- 20%, Savings & debt: emergency fund, goals, investments, extra debt payments
For more depth, read our full 50/30/20 guide for New Zealanders.
Why Kiwis often need to adjust the percentages
New Zealand has some of the most expensive housing in the OECD. For most Aucklanders, Wellingtonians, and renters in other main centres, the 50% for needs isn't enough to cover rent + power + groceries + transport. A more realistic split for many Kiwis is 60/20/20 or even 65/15/20.
The calculator above shows you the classic 50/30/20 breakdown, use it as a benchmark, then adjust up the "needs" slice if your rent eats more than that.
Frequently asked questions
What is the 50/30/20 rule?
The 50/30/20 rule is a simple budgeting framework: 50% of your take-home pay goes to needs (rent, power, groceries, transport), 30% goes to wants (dining out, subscriptions, hobbies), and 20% goes to savings and debt repayment. It works because it's easy to remember and gives every dollar a home.
Does 50/30/20 work in New Zealand?
It works as a starting framework, but needs adjusting for NZ's higher cost of living, especially housing. For most Kiwis in Auckland or Wellington, rent alone eats 35–50% of take-home pay, so the 'needs' slice often has to go up to 55–65%. The savings slice can stay at 20% if you're strict about wants.
Should I use gross or net pay?
Use your net (take-home) pay, the amount that lands in your bank account after PAYE, ACC, KiwiSaver, and student loan deductions. Your KiwiSaver contribution is already happening automatically and counts as savings separate from the 20% in the 50/30/20 rule.
What counts as a 'need' vs a 'want'?
Needs are things you can't reasonably avoid: rent or mortgage, power, water, basic groceries, transport to work, insurance, minimum debt payments. Wants are the discretionary extras: dining out, streaming services, new clothes, holidays. If you'd struggle without it next month, it's probably a need.
How do I actually follow the 50/30/20 rule once I know my numbers?
The hard part isn't the maths, it's the execution. You need to move the savings portion to a separate account before you spend it. PayDay automates this: the moment your pay lands, it splits it into your needs/wants/savings accounts so you never have to do it manually.