How the 50/30/20 rule works
The rule was popularised by US Senator Elizabeth Warren and her daughter Amelia Warren Tyagi in their book All Your Worth. Instead of tracking dozens of categories, you sort every expense into one of three buckets and check each bucket against a simple percentage of your take-home pay (after tax).
Needs, wants or savings?
| Needs (50%) | Wants (30%) | Savings & debt (20%) |
|---|---|---|
| Rent or mortgage | Eating out, takeaways | Emergency fund |
| Groceries | Streaming and subscriptions | Retirement and investments |
| Utilities, phone, internet | Holidays and travel | Extra debt payments above the minimum |
| Transport to work | Clothes beyond the basics | Saving for a house deposit |
| Insurance, childcare | Hobbies, gym, gadgets | Sinking funds (car repairs, gifts) |
| Minimum debt payments | Upgrades (a nicer phone plan) |
The test for a need: would you face serious problems if you stopped paying it? Groceries are a need; the premium brand is partly a want. Be honest, because labelling wants as needs is the most common way budgets go wrong.
Reading your result
- Needs over 50% is common in expensive cities. Choose the 60/20/20 rule, and look at the biggest fixed costs (housing, car, phone contracts) when they come up for renewal.
- Wants over 30% is the easiest area to trim: cancel unused subscriptions and set a weekly amount for eating out.
- Savings under 20%: start with whatever you can, even 5%, and raise it each time your income rises.
- Money left over that you haven't planned tends to disappear. Give it a job, ideally in savings.
Other splits
If you're paying off high-interest debt or saving for something big, flip the rule to 40/30/30 or cut wants further. If your income is low compared with living costs, 70/20/10 is more realistic. The point isn't the exact numbers but a plan that covers needs, keeps some fun, and always saves something.
Next steps
- Build an emergency fund of 3–6 months of needs. The savings goal calculator shows how long it will take.
- Clear expensive debts with the debt payoff planner.
- Automate: move your savings on payday, before you can spend it.
- Review your budget every few months and after any change in income.
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Frequently asked questions
What is the 50/30/20 budget rule?
Spend 50% of take-home pay on needs, 30% on wants, and put 20% into savings and extra debt payments.
Is 50/30/20 based on gross or net income?
Net (take-home) income, after tax. If pension contributions come out of your salary, you can count them as savings.
What if my needs are more than 50%?
That is common where housing is expensive. Use 60/20/20, keep saving something, and look for savings on your biggest fixed costs.
Are debt payments needs or savings?
Minimum payments are needs. Anything you pay above the minimum counts towards the 20% savings and debt bucket.
How much should I save each month?
The rule suggests 20% of take-home pay. If that isn’t possible yet, start smaller and increase it over time.
Last updated October 2026 · More finance & business