The short answer: the 50/30/20 method is a simple way of grouping your spending. It splits take-home income into three buckets: roughly 50% for needs, 30% for wants, and 20% for savings or paying off debt. It's a rule of thumb for organising a budget, not a target everyone has to hit.
The idea was popularised by Elizabeth Warren and Amelia Warren Tyagi in their 2005 book All Your Worth.
The three groups
Needs (around 50%)
Costs you'd struggle to avoid: housing, council tax, energy, water, basic groceries, getting to work, minimum debt repayments and essential insurance.
Wants (around 30%)
Things that make life enjoyable but aren't essential: eating out, takeaways, hobbies, streaming services, holidays and non-essential shopping.
Savings and debt (around 20%)
Money set aside for goals or future costs, and any debt repayments above the minimum.
A worked example
Sam takes home £2,000 a month. Applying the 50/30/20 split as a starting point would look like this:
| Group | Share | Amount |
|---|---|---|
| Needs | 50% | £1,000 |
| Wants | 30% | £600 |
| Savings and debt | 20% | £400 |
Sam is a made-up example, not a recommendation.
In real life, needs often take up more than half, especially where housing costs are high. That's normal. The method is most useful as a way to see where money goes, then decide for yourself what, if anything, to change.
How to set it up in a spreadsheet
- List your spending categories as you normally would.
- Add a column that tags each category as Need, Want or Savings/Debt.
- Use a
SUMIFformula to total each group. - Divide each total by your income to see the percentage split.
Seeing your own percentages side by side is often more eye-opening than any rule.
Frequently asked questions
Is 50/30/20 right for everyone?
No. It's a general framework. Your own split depends on your income, costs and circumstances.
Is a phone contract a need or a want?
It's up to you. Many people count a basic phone plan as a need and the upgrade as a want.
What if my needs are more than 50%?
That's common. Use the numbers to understand your situation rather than as a pass or fail.
Try it in a template
Our Monthly Budget Planner lets you set planned amounts for every category and compare them with what you actually spend, so you can see your own split each month.
Important: This article is general information to help you organise your money. It is not financial advice and doesn't take your personal circumstances into account. Any figures are made-up examples. For free, impartial guidance, visit MoneyHelper. If you're worried about debt, contact StepChange or Citizens Advice.