50/30/20 Budget Calculator
Enter your take-home pay to split it into needs, wants and savings.
What this tool does
The 50/30/20 rule says to spend 50% of take-home pay on needs, 30% on wants and put 20% towards savings and debt repayment. On 4,000 a month that is 2,000 for needs, 1,200 for wants and 800 for savings. Enter your income above, and change the shares if your situation differs.
Applies the three shares to your monthly take-home pay.
Shows the monthly and yearly amounts and checks the shares total 100%.
How to use it
- Enter your monthly take-home income.
- Leave the 50/30/20 shares or change them.
- Read the amounts for needs, wants and savings.
- Compare them with your real spending.
Why use this calculator
Splits take-home income into needs, wants and savings using the 50/30/20 rule, with percentages you can change to suit your life. A budget with three buckets is easy to start and easy to keep. It gives you a quick sense of whether your essentials are eating too much of your income.
Why we built it
We built the 50/30/20 budget calculator to split take-home pay into needs, wants and savings, and to let you change the percentages when the standard split does not fit. Track real spending with the budget planner and plan a target with the savings goal calculator.
For a neighbouring job there is also the BTU Calculator and the Retirement Calculator.
Who this tool is for
- People starting their first budget
- Households resetting spending after a pay change
- Students learning personal finance
When to use it
- Starting a first budget.
- Checking if rent is too high a share of pay.
- Setting a savings target.
- Resetting after a pay change.
How it works
Needs are costs you cannot avoid, such as rent, utilities, groceries, insurance and minimum debt payments. Wants are optional, such as dining out and subscriptions. The savings share covers emergency funds, retirement and extra debt repayment. Each amount is income × its share.
Example: 4,000 take-home. Needs 2,000, wants 1,200, savings 800, which is 9,600 saved over a year.
In high-cost areas needs often exceed 50%. The rule is a starting point; change the shares to match your reality.
A worked example
These are the values the calculator opens with, so you can see exactly what it does with them. Change any value on the page and the result updates; the figures below come from the same calculation.
| Input | Value |
|---|---|
| Currency symbol | $ (dollar) |
| Monthly take-home income | 4000 |
| Needs | 50 |
| Wants | 30 |
| Savings and debt repayment | 20 |
With those inputs, the calculator returns:
- Needs: $2,000.00
- Wants: $1,200.00
- Savings and debt repayment: $800.00
- Needs per year: $24,000.00
- Savings per year: $9,600.00
What you give it, and what you get back
| Item | Details |
|---|---|
| Income | Monthly take-home (after-tax) pay. |
| Shares | Percentages for needs, wants and savings; must total 100. |
| Output | Monthly amounts and yearly totals for each. |
Issues you may run into
| What you see | Why it happens | What to do |
|---|---|---|
| "Must total 100%" message | The three shares add up to something else. | Adjust them to total 100. |
| Needs are above 50% for me | Housing and bills are high. | Increase the needs share and reduce wants. |
| Gross vs take-home | The rule applies to after-tax income. | Use take-home pay. |
Assumptions and limitations
- A rule of thumb, not personal financial advice.
- It does not categorise your actual spending.
Frequently asked questions
What is the 50/30/20 rule?
A budgeting guideline: 50% of after-tax income on needs, 30% on wants and 20% on savings and debt repayment.
Does 50/30/20 use gross or net income?
Net, meaning take-home pay after tax.
What counts as a need?
Essentials such as housing, food, utilities, transport to work, insurance and minimum debt payments.
Can I change the percentages?
Yes. Edit them so they total 100%.
Is debt repayment a need or savings?
Minimum payments are needs; extra payments count towards the savings share.
Is my information sent anywhere?
No. The calculation runs in your browser and your figures never leave the page.