Tax Sale Support is the Number One Investor Resource for Tax Lien and Tax Deed Training. Get Started investing in Tax Lien Certificates and Tax Deed Foreclosures today. The States are listed in alphabetical order, click on the State tab to be directed to the individual county lists. Each State will also includes a details on the state OTC process. Click on the one of the four tabs below to start researching Over the Counter Tax Sale Inventory along with the Local Land Banks. Tax Sale Support has the largest database of current OTC lists available online. Start researching by clicking the tabs below!