The short story is that if you purchase the tax lein on a property and the current owner does not come current on his taxes then you could end up owning the home. However the other stradigy is that you are able to earn interest on your money after buying the tax leins. I have looked into this and come to find out that their are many companies out there designed to purchase tax leins in bulk for pennies on behalf of their investors. In order to become an investor with some of these companies you may have to fork over as much as 30 - 50 K to get started. I am sure their are deals out there to be had with tax leins but the trick is doing plenty of reserach to find them. Good luck.