I was selling a commercial property in 2018 in Massachusetts. The buyer was paying $2,500 a month toward the sale. If the sale went through, the final payment was reduced by this amount. If the sale did not go through, I kept the $2,500 paid monthly. The sale went through in February 2019 and the final payment was reduced by the paid amount. Is the $2,500 a month considered income in 2018 or part of the sale 2019? and will I pay taxes as income in 2018.
