Born from a book
The 50/30/20 rule was popularised by Senator Elizabeth Warren and Amelia Warren Tyagi in “All Your Worth” (2005)—it started as a voter-friendly guide.
Use take-home (net) income. Tweak the split to match your situation (e.g., high rent areas).
The 50/30/20 rule is a friendly framework for building a monthly budget with your take-home (net) income. The idea is simple: aim to spend roughly 50% on Needs, 30% on Wants, and 20% on Saving or debt repayment. It’s not meant to be perfect—think of it as a starting point you can tweak to suit your lifestyle, location, and goals. This tool helps you see your targets, log expenses, and check progress at a glance.
If your monthly net income is £3,000, the default targets are: Needs £1,500 (50%), Wants £900 (30%), and Saving/Debt £600 (20%). Enter your expenses and see how close you are. If Needs run over (e.g., £1,650), you can trim Wants, look for bills to switch, or temporarily shift your split (e.g., 55/25/20) while you work on a longer-term fix.
The 50/30/20 rule is a guide, not a law. In high-cost areas, Needs might exceed 50%—that’s okay. Options include 60/25/15 or 55/30/15. If you’re focused on building an emergency fund or paying off high-interest debt, you might try 50/20/30 for a few months. Revisit the split each quarter and rebalance as circumstances change.
No—this is an educational tool. Everyone’s situation is different (income volatility, location, family, health, fees, and taxes). Use the planner to build awareness and momentum, and consider professional guidance for complex decisions.
The 50/30/20 rule was popularised by Senator Elizabeth Warren and Amelia Warren Tyagi in “All Your Worth” (2005)—it started as a voter-friendly guide.
In pricey cities, Needs often hit 55–65%. Many planners keep the “20” for saving/debt sacred and let Wants shrink instead.
Pre-tax pension/retirement contributions effectively live in the “20” bucket—meaning your visible net income can be lower while you’re still on target.
Behaviour research shows all-or-nothing budgets fail fast; a small “fun” slice dramatically improves sticking power over 12+ months.
Heating, holidays, and gift seasons spike Wants and Needs. A tiny monthly “sinking fund” keeps the 50/30/20 split stable year-round.