The most common buydown is the 2-1 buydown. In the past, for a buyer to secure a 2-1 buydown they would pay 3 points above current market points in order to pay a below market interest rate during the first two years of the loan. At the end of the two years they would then pay the old market rate for the remaining term.

In today's market, mortgage companies have designed variations of the old buydowns rather than charge higher points to the buyer in the beginning they increase the note rate to cover their yields in the later years.

Another common buydown is the 3-2-1 buydown which works much in the same ways as the 2-1 buydown, with the exception of the starting interest rate being 3% below the note rate. Another variation is the flex-fixed buydown programs that increase at six month interval rather than annual intervals.