What Is the 50/30/20 Rule?
The 50/30/20 rule is a budgeting framework popularised by US Senator Elizabeth Warren in her book All Your Worth. The concept is straightforward: divide your after-tax income into three categories.
- 50% on needs โ housing, utilities, groceries, transport, insurance, minimum debt repayments
- 30% on wants โ dining out, entertainment, subscriptions, holidays, non-essential shopping
- 20% on savings and debt โ emergency fund, super top-ups, investments, extra debt repayments
Its power is in its simplicity. You don't need to track every coffee purchase. You just need to know whether you're roughly inside your three buckets.
Start by knowing your actual take-home number. Use the Take-Home Pay Calculator to get your accurate after-tax, after-super income for the year.
Applying It to an Australian Income
Let's run through a real example. Say you take home $75,000 after tax (roughly a $95,000 gross salary in 2024-25).
- 50% needs: $37,500/year โ $3,125/month โ $721/week
- 30% wants: $22,500/year โ $1,875/month โ $433/week
- 20% savings: $15,000/year โ $1,250/month โ $288/week
That 20% savings bucket โ $15,000 per year โ going into an index fund or offset account for 20 years has a transformative effect on your financial position. Use the Savings Goal Calculator to see how long it takes to hit specific milestones at different contribution rates.
The Australian Housing Problem
Here's the honest challenge: in Sydney and Melbourne especially, housing alone can consume 40โ50% of a median income. If rent or mortgage repayments are eating 35% of your take-home pay, there's not much left for other needs before you've hit the 50% ceiling.
In this case, the 50/30/20 framework still works โ you just need to adjust the buckets. The most common adaptation is:
- 60% needs (acknowledging high housing costs)
- 20% wants
- 20% savings (hold this one firm โ it's the most important)
The key principle isn't the exact percentages. It's the habit of paying yourself first (savings) and not letting lifestyle inflation eat your financial security.
What Counts as a Need vs a Want?
This is where people get loose. Honest categorisation matters.
Needs:
- Rent or mortgage repayment
- Electricity, gas, water
- Groceries (not restaurants)
- Health insurance, car insurance, home insurance
- Public transport or a basic car running cost
- Minimum repayments on debt
- Phone plan (basic tier)
Wants:
- Restaurants, cafes, takeaway
- Streaming subscriptions (Netflix, Spotify, etc.)
- Gym membership (unless medically necessary)
- Clothing beyond what you genuinely need
- Travel and holidays
- Hobbies, sports, concerts
A gym membership and a basic streaming service are fine in the wants bucket. Five streaming services, a premium gym, DoorDash three times a week, and a wardrobe habit โ that's where the wants bucket quietly blows out.
Building the 20% Savings Bucket
Twenty percent of take-home pay is meaningful money. The question is where it goes. A sensible order of operations:
- Emergency fund first โ three to six months of expenses in a high-interest savings account
- High-interest debt โ credit card balances above 15% interest rate should be killed before investing
- Super top-up via salary sacrifice โ highly tax-effective for most income levels
- Mortgage offset or extra repayments
- Investment account โ ETFs, managed funds, or similar
Use the Budget Planner to map your actual income and expenses across all three categories and see where the gaps are.
Making It Stick
The 50/30/20 rule works best when it's automated. Set up three separate accounts โ one for needs (your bills account), one for wants (discretionary spending), and one for savings that you treat as untouchable. Transfer the right amount to each on payday before you spend anything.
If you want a deeper framework for managing money across multiple goals, a personal finance book like The Barefoot Investor by Scott Pape (available on Amazon AU) offers an Australian-specific bucket system that pairs well with the 50/30/20 structure.