Introduction
The 50/30/20 rule splits take-home pay into needs, wants and savings. It is a target to move towards, not a test you pass or fail.
Quick answer
- Needs: 50% — housing, bills, food, transport to work.
- Wants: 30% — eating out, streaming, hobbies.
- Savings and extra debt payoff: 20%.
What is it?
Start with take-home pay, not gross pay. Sort each expense honestly into needs or wants, then see where your split actually lands.
How to use the calculator, step by step
- Enter your numbers in the calculator linked above.
- Press Calculate.
- Check the main result and the total, not just the first number.
- Try a second version — a different rate, term or payment — and compare the totals.
Worked example
Take-home £4,000 a month: needs £2,000, wants £1,200, savings £800. In high-rent cities needs may exceed 50% — adjust the target, do not hide the rent.
Common mistakes
Using gross pay instead of take-home; calling wants needs; setting a savings target with no emergency fund first.
Frequently asked questions
Is the calculator result exact? No, it is an estimate for learning and planning, based on the numbers you enter and the assumptions stated on the calculator page.
Should I check with a professional? Yes, for a mortgage, loan, tax or investment decision, check with your lender, bank, tax authority or a qualified adviser before you decide.
Can I use this in the US, UK or Canada? The maths is the same, but rates, tax bands and lender rules differ by country. Use the numbers and rules for your country, and check the official source where a rate or band matters.
Conclusion and next step
Try your own numbers in the calculator, compare the totals, and read the next calculator guide from the homepage when you are ready.
Disclaimer: This article and calculator are for information and education only. Results are estimates and not financial advice. Please check with your lender or a qualified adviser before making a financial decision.