A Qualified Intermediary, or QI, is an independent third party to the transaction whose function is to prepare the documents necessary to create the exchange, as well as to act as the independent escrow agent for the exchange funds.
Under § 1031(f)(1), a taxpayer exchanging like-kind property with a related person cannot use the nonrecognition provisions of § 1031 if, within 2 years of the date of the last transfer, either the related person disposes of the relinquished property or the taxpayer disposes of the replacement property.
Lack of Liquidity- Exchanging properties continually can tie up funds in real estate, making it hard for an investor to access liquid capital if required. While real estate can be a profitable investment, it's not as liquid as some other assets.