Build a realistic monthly budget — adjust the split to match your situation
The 50/30/20 rule — popularised by Senator Elizabeth Warren — is a simple budgeting framework: spend 50% on needs, 30% on wants, and save or pay off debt with 20%. It's a starting point, not a law — adjust the split to match your income and goals.
If you live in an expensive city, 60% on needs is realistic. If you're aggressively saving for a house deposit or paying off debt, shift more into the savings bucket. The tool above lets you customise the split with the sliders.
Start with your take-home pay, then list your fixed needs, flexible wants, and savings or debt payments. Assign every pound a job so income minus outgoings comes to zero, and adjust until the plan is realistic. This planner does the maths for you and shows where your money is going at a glance.
The 50/30/20 rule suggests spending 50% of your take-home pay on needs, 30% on wants, and putting 20% toward savings or debt. It is a simple starting framework rather than a strict law, and you can shift the split to match your cost of living and goals. The sliders above let you customise each percentage.
Budget with your net, take-home income because that is the money actually available to spend and save. Gross salary includes tax and other deductions you never see. This planner can estimate your monthly take-home from a gross salary so you can plan around the right number.
A common target is to save around 20% of take-home pay, but the right amount depends on your goals and current debts. If you are clearing high-interest debt or building an emergency fund, prioritise that first. Even saving a small, consistent amount each month builds momentum over time.
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