Glossary

Cleansing Period

Also known as: FIRPTA cleansing rule, Five-year cleansing period

A FIRPTA rule under which a corporation's stock ceases to be treated as a U.S. real property interest if the corporation disposed of all its U.S. real property interests in taxable transactions during the five years preceding the sale, provided any resulting tax was paid.

The cleansing period exists to prevent FIRPTA from indefinitely tainting stock in a corporation that once held U.S. real estate but has since fully exited it — without the rule, a foreign investor selling stock in a former USRPHC could remain subject to FIRPTA years after the corporation stopped owning any real property at all. The test requires that the corporation recognized gain on every disposition of its U.S. real property interests during the look-back window and that the associated tax liability was satisfied, so a tax-deferred exit (for example, via a like-kind exchange or a tax-free reorganization) generally does not start the cleansing clock in the same way a fully taxable sale does. Structuring around the cleansing period is a specialized area of pre-sale planning: sponsors anticipating a future exit of a foreign-held corporate holding structure sometimes sequence asset dispositions specifically to trigger cleansing well in advance of an eventual stock sale, since the benefit only accrues once the full five-year taxable-disposition condition has been satisfied.