Step One: Calculate Your After_Tax Income. Your after_tax income is what remains of your paycheck after taxes are taken out, such as state tax, local tax, income tax, Medicare, and Social Security. If you're an employee with a steady paycheck, your after_tax income should be easy to figure out. Look at your paystubs. If health care, retirement contributions, or any other deductions are taken out of your paycheck, add them back in.
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?