We generate selection-adjusted NPV and IRR estimates for a bachelor's degree in the U.S. which account for time-to-graduation, debt financing and tuition levels. We find that a college degree is generally worthwhile, but the private value of the investment is a declining function of time-to-graduation. Selection-adjustments show that for students at the lower end of the ability distribution and in some areas of study, a college degree may never be a good financial proposition; as such, we provide breakeven thresholds for tuition at which college remains viable. Debt financing generates higher returns but greater risk compared to self-financing.