When a sale of a business or investment property results in a gain, the seller is typically taxed on that gain during the year of the sale, even when the gain was generated over many years. However, the tax code provides opportunities to spread this gain over several years, to postpone it by deferring the gain into another property, or to simply defer it for a specified period of time. These arrangements can be accomplished by selling the property in an installment sale, by exchanging the property for another, or by investing in a qualified opportunity fund. As with all tax strategies, these options have unique requirements. The following is an overview of what tax law says about these strategies.