I have an agreement for a home purchase as lease with option with 100% of payments going towards down payment for house. The owner & I are ready to close since I have paid for home entirely. I have been told that I will have to show IRS where the down payment came from over the last 10 years in the next tax year. I have filed taxes every year and can certainly justify that I have had discretionary cash each month to pay towards something. Am I going to raise a huge red flag because I am showing equal down payment and purchase price for this house?