An installment sale has the following primary disadvantages: The sold assets will not receive stepped-up basis in the event of your death.
An installment contract is a single contract that is completed by a series of performances –such as payments, performances of a service, or delivery of goods–rather than being performed all at one time.
Tax Deferral (for the seller): One of the most compelling reasons to consider an installment sale is the ability to defer capital gains tax.
Use Form 6252, Installment Sale Income to report an installment sale in the year the sale occurs and for each year of the installment obligation. You may need to attach Form 4797 and Schedule D (Form 1040) to your Form 1040, U.S. Individual Income Tax Return or Form 1040-SR, U.S. Tax Return for Seniors.