The 50/30/20 budget rule, explained with a simple example
If you've never made a budget, the 50/30/20 rule is one of the easiest places to start. It uses three buckets and one simple idea, and it doesn't require you to track every last coin.
What the rule says
Take your income after tax and divide it three ways:
- 50% for needs: the things you can't easily skip
- 30% for wants: the things that make life enjoyable but are optional
- 20% for savings and debt repayment: your future
The rule was popularised by Elizabeth Warren and Amelia Warren Tyagi in their book All Your Worth (2005). Think of it as a starting point, not a law.
A worked example
Say your take-home pay is 3,000 a month.
| Bucket | Share | Amount |
|---|---|---|
| Needs | 50% | 1,500 |
| Wants | 30% | 900 |
| Savings and debt | 20% | 600 |
If your rent, utilities, groceries, transport and minimum debt payments come to 1,500 or less, you're on track. If they come to 1,900, your needs are using 63% of your income, and you now know exactly how far off the rule you are.
What goes in each bucket
Needs
Housing, utilities, basic groceries, transport to work, insurance, and the minimum payments on any debt.
Wants
Eating out, entertainment, subscriptions, hobbies, holidays, and the upgraded version of anything you could have bought in a cheaper form.
Savings and debt repayment
Emergency fund, retirement or long-term savings, other goals, and any debt payments above the minimum.
Some items are judgement calls. A phone is a need, but a new flagship phone is partly a want. Be honest with yourself and be consistent.
When the rule doesn't fit
- High living costs or low income. If needs take 65% or 70%, the rule isn't broken, your situation is just different. Try 60/20/20 or 70/20/10 and aim to improve it slowly.
- Irregular income. Use your lowest typical month, or the average of the last six, as your income figure.
- Aggressive goals. If you're paying off debt or saving for something big, you might flip it to 50/20/30 for a while.
How to start in four steps
- Find your monthly take-home pay.
- Look at last month's spending by category. Your bank statement or an expense tracker will show it.
- Sort every category into needs, wants or savings and total each bucket.
- Compare with 50/30/20 and change one bucket at a time. Trying to fix everything in the first month usually backfires.
Common mistakes
- Hiding subscriptions. They belong in wants unless you truly can't live without them.
- Forgetting irregular costs. Annual insurance, car repairs and gifts come back every year. Spread them across the months.
- Treating savings as "whatever is left". Move the 20% out at the start of the month, not at the end.
You need numbers to use any budget
A budget is only as good as what you know about your spending. Whatever tool you use, record your expenses for a month before you decide your split.
WinaltTrack lets you set a monthly limit for each category and shows how much of it you have used, with the unspent amount rolling into the next month if you choose. It is free, works offline and needs no sign-up, so you can try the 50/30/20 approach in a few minutes.