What Is My Current Cash Flow? Assess whether you are running “in the black” or “in the red” each month. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Share | Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content When Do You Need a Will? When do you need a will? The answer is easy: Right Now. To Buy or Not to Buy The decision whether to buy or rent a home may have long-term implications. What Is My Life Expectancy? Estimate how many years you may need retirement assets or how long to provide income to a surviving spouse or children.