Start by splitting your after-tax income into three primary categories: 50% for needs, 30% for wants, and 20% for savings and debt repayment. This method allows for flexibility, helping you adapt your spending based on changing priorities. If you find the 50/30/20 split doesn't fit your lifestyle perfectly, feel free to adjust it. For those with specific goals like saving up for a major purchase, modifying these percentages can direct more funds towards your needs or savings, depending on the urgency of your goals. Proportional budgeting can work as a standalone approach or serve as a baseline for more customized budgeting strategies.