The 50/30/20 rule: a simple budget you can start this month
The 50/30/20 rule is the simplest budgeting rule I know that still works: split what you take home into needs, wants and savings. Here’s how it works, a concrete example, and what to do when your life doesn’t fit the percentages.
What the 50/30/20 rule is
Take the money you actually receive each month, after taxes, and give every part of it one of three jobs:
- 50% for needs: what you must pay to live and work. Rent or mortgage, utilities, groceries, transport, insurance, minimum loan payments.
- 30% for wants: what makes life better but could stop tomorrow. Eating out, subscriptions, clothes beyond the basics, holidays, hobbies.
- 20% for savings and debt: an emergency fund, saving for something big, investing, and paying off debt faster than the minimum.
It’s a rule of thumb, not a law: your percentages can look different depending on your income, where you live and what you owe.
You may see it written as 50-30-20 or 50/20/30. It’s the same rule; the 50/20/30 order just lists savings before wants.
A concrete example
| Part | Share | Each month | For example |
|---|---|---|---|
| Needs | 50% | €1,000 | Rent €650, groceries €230, utilities €70, transport €50 |
| Wants | 30% | €600 | Eating out €180, subscriptions €40, clothes €120, a trip fund €260 |
| Savings and debt | 20% | €400 | Emergency fund €250, investing €150 |
The numbers don’t have to land exactly. The point is to notice when one part keeps eating into another.
Telling needs from wants
A useful test: would you still pay for it if you lost your income tomorrow? Rent, yes. Groceries, yes, though maybe cheaper ones. A streaming subscription, probably not. The extra cost of a choice, like a pricier flat or more expensive brands, belongs with wants rather than needs.
When 50/30/20 doesn’t fit your life
- Your needs are more than half. In an expensive city or on a lower income that’s normal. Use 60/20/20 or 70/20/10 and save what you can.
- Your income changes month to month. Build your basic budget on a cautious figure, such as one of your weakest recent months rather than the average. In good months, put part of the difference aside.
- You’re paying off debt. Payments above the minimum can count toward the 20%. Once you have a small emergency fund, prioritize high-interest debt: its interest rate is often higher than what you can reasonably earn on cash savings.
How to start this month
- Start with your take-home pay, not your salary before taxes.
- Put every regular expense into needs or wants.
- Set aside 20% for savings, investing or extra debt payments.
- At the end of the month, compare what you actually spent with the targets.
Don’t worry about getting the percentages perfect the first time. The goal is to see where your money goes, then adjust.
How I track it
I built Consistent partly for this. It doesn’t have a special 50/30/20 mode: I set a monthly budget for each category, so my needs add up to about half of what I take home, and keep the 20% in goals. Each budget shows what’s left to spend this month and per day, and an unspent budget can carry into the next month.
Two more things matter to me. My money is in lei, euros and dollars, and every amount is converted at that day’s rate, so the split stays accurate. And money I lend to a friend doesn’t count as spending, so it doesn’t distort the picture.