Split your income into needs, wants & savings — with adjustable percentages and budget vs actual tracking
Actual spending (optional — for budget vs actual comparison)
The 50/30/20 rule is a budgeting framework popularised by US Senator Elizabeth Warren in her book "All Your Worth." It divides your monthly after-tax income into three simple categories: 50% for needs, 30% for wants, and 20% for savings and debt repayment. Its power lies in its simplicity — three numbers are easy to remember and easy to track.
Enter your monthly take-home income (after tax) and the calculator instantly shows your recommended spending for each category. The percentages are fully adjustable — if your needs genuinely exceed 50% due to high housing costs, adjust the sliders to match your reality. Enter your actual spending in each category to see a budget vs actual comparison and identify where you're over or under.
The 50/30/20 split is a guideline, not a rigid rule. Common variations include 60/20/20 for people in high cost-of-living cities, 50/20/30 for those focused on aggressive debt payoff or investing, and 70/20/10 for lower income households where needs dominate. The key is having a structured framework — any consistent system beats no system.
Automate your 20%: Set up automatic transfers to savings on payday so the money moves before you can spend it. Review monthly: Use the budget vs actual comparison to spot patterns before they become habits. Start honest: Track your actual spending for one month first to understand your real baseline before setting targets.
Needs are unavoidable — rent, utilities, groceries, insurance, minimum loan payments, and work transport. Wants are lifestyle choices — dining out, Netflix, gym membership, hobbies. When in doubt, ask: could you live without it for a month? If yes, it's a want.
This is common, especially in high cost-of-living areas. Adjust the needs percentage in the calculator to reflect your reality. Work toward reducing fixed costs over time — finding cheaper rent, refinancing loans, or lowering utility bills — to move closer to the 50% guideline.
The minimum mortgage payment goes in Needs. Any extra overpayment above the minimum goes in Savings/Debt. This way your essential housing cost is captured in needs while your wealth-building payment is credited to savings.
After the month ends, enter your real spending in each category. Green means under budget, red means over. Use this to identify which category needs attention next month. Even one month of tracking reveals powerful spending patterns.