A Mortgage Revenue Bond Loan or bond loan is a type of mortgage loan where the cost of borrowing is partially subsidized by a mortgage revenue bond. Although details differ between programs, mortgage revenue bond loan programs are in general designed to lower the cost of homeownership for low to medium income borrowers, sometimes for targeted occupations or neighborhoods. In the United States, mortgage revenue bond loans have supported an average of 100,000 home purchases for low-income buyers in the past 20 years. Some very popular local programs are the Texas State Affordable Housing Coporation (TSAHC) and Texas Veterans Land Board (TVLB or Tex Vet).