Guide
The 50/30/20 rule: what it is, with an example in euros
It is a rule of thumb for splitting your net salary: 50% for needs, 30% for wants, 20% for savings and debts. On €1,600 net that is €800 for needs, €480 for wants and €320 for savings and debts.
Updated 9 October 2026. By Matteo De Min.
The three shares
- 50% needs: what you can’t avoid. Housing, bills, groceries, transport to work, instalments already taken on, insurance.
- 30% wants: what you choose. Restaurants, entertainment subscriptions, travel, clothes beyond what is necessary.
- 20% savings and debts: money set aside and debt payments above the minimum.
An example with numbers
Net salary of €1,600.
| Share | Percentage | Amount |
|---|---|---|
| Needs | 50% | €800 |
| Wants | 30% | €480 |
| Savings and debts | 20% | €320 |
| Total | 100% | €1,600 |
When it doesn’t add up
In many cities rent alone is over 50%. If needs cost €1,000 out of €1,600, they are 62.5%. Keeping 20% aside (€320), that leaves €280 for wants, or 17.5%.
| Share | Percentage | Amount |
|---|---|---|
| Needs | 62,5% | €1,000 |
| Wants | 17,5% | €280 |
| Savings and debts | 20% | €320 |
| Total | 100% | €1,600 |
The rule is a reference point, not an obligation: people with high fixed costs shift the percentages, and people with low ones can set aside more. It is not a personalised recommendation and doesn’t take your situation into account.
Where it comes from
The 50/30/20 split is attributed to Elizabeth Warren and Amelia Warren Tyagi, who describe it in the book All Your Worth (2005). The percentages are a basic simplification, and everyone draws the line between need and want for themselves: an internet connection can go in one column or the other.
How to use it to build a daily budget
The two fit together: the share for wants and the variable part of needs (groceries, petrol) are what you spend day by day. The step from a monthly figure to a daily one is in the guide on how to build a daily budget.
How MoneyLeft does it
MoneyLeft has no dedicated feature for the 50/30/20 rule and doesn’t apply percentages by itself. You can follow it with the tools that exist: the breakdown by category shows where the cycle’s money went, the budget with a cap per category lets you give each item its share, and savings goals show progress on the part you set aside. Forecasts are calculations on your own numbers, not financial advice.
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