The 50ቺተ Rule of Thumb for Budgeting. You've reviewed your spending and created a budget, and now you know exactly how much you spend on your home, your car, discretionary spending, and how much you divert to your retirement accounts. That's all good, but what about your other savings, such as for an emergency? How does your financial allocation compare to the amount you should ideally spend and save?
Step Two: Limit Your Needs to 50 Percent of Your After_Tax Income. Now go back to your budget. How much do you spend on "needs" each month, things like groceries, housing, utilities, health insurance, car payment, and car insurance? According to Warren and Tyagi and their 50ቺተ rule, the amount that you spend on these things should total no more than 50 percent of your after_tax pay.