This is income that must be reported on your tax return. The IRS will get a copy of the 1099-S and probably tax it as ordinary income or a short term capital gain unless you amend your return and report it. The amended return form 1040X is estimated to be available on 2/28/19. You should wait until you get your refund from your original return before doing an amended return. Do not change your original return until you start the amended return. Amended returns must be printed, signed, and mailed. They can't be efiled.
