Partnership (2 partners 50%each) purchased rental property in 2010.  In 2019, the partnership sold the property for $300,000.00 to one of the partners.  K-1 is reporting section 1231 gain and unrecaptured section 1250 gain.  Settlement sheet shows corporate payout to partner purchasing the property for $150,000.00 and shows private financing for $150,000.00.  Buyer then gives partnership a promissory note for $150,000.00. The  partnership then assigns/transfers  (as documented by Recorder of Deeds paperwork) the note to the other partner.  Other partner will be receiving payments as per the mortgage amortization sheet included with his documents for the next 10 years.  Since the gain was reported by the K-1, doing an installment sale has him paying twice on the gain (on the 2019 return from the K-1 and then over the next 10 years as the installment payments are made).  Do I just report the interest he is receiving and not treat as an installment sale?  Do I show an installment sale with same price for selling and cost basis so there is no gain? The partnership is still active-they own other properties.