The 50/30/20 rule

How the split works

The rule divides your take-home pay – the money that actually reaches your account after tax and deductions – into three parts:

• 50% for needs – housing, utilities, groceries, transport, insurance and minimum debt payments.
• 30% for wants – eating out, hobbies, trips, subscriptions and anything else you could live without.
• 20% for saving and extra debt payments – your emergency fund, other goals and paying debt faster than the minimum.

A worked example

With a take-home pay of €2,000 a month, the rule suggests €1,000 for needs (2,000 × 0.5), €600 for wants (2,000 × 0.3) and €400 for saving (2,000 × 0.2).

Compare that with what you found when you tracked where your money goes. If your needs come to €1,150, you are €150 over the 50% line, and that money has to come from wants or saving.

When your numbers don't fit

If rent alone takes a large share of your pay, needs above 50% are nothing to be ashamed of. In that case, protect the saving part first and let wants absorb the difference, for example 60/25/15. Write down the split you choose so you can check against it each month, and move back towards 20% saving when your situation allows, such as after a pay rise.

If your income is high, the opposite can happen: needs may be well below 50%. Then the extra room is a chance to save more, not a signal to spend up to the line.

Needs or wants?

The line between needs and wants isn't always sharp. A basic phone plan is a need, but the newest phone on a monthly contract is partly a want. Groceries are a need, while ready meals and delivery are mostly wants.

When in doubt, ask whether you would keep paying for it if your income dropped tomorrow. If not, it belongs in wants.

Use it as a check, not a cage

The value of the rule is that it is easy to remember and quick to apply. Once a month, add up your three groups and see how far each is from its target.

If saving is below 20%, look for one want you can trim or one need you can renegotiate, such as a phone plan. Small, repeatable changes matter more than hitting the exact percentages.