Deductions & credits

The sale of a timeshare is the same as a brokerage/stock sale - it is the sale of a capital asset.

It is entered in the Stocks, Mutual Funds, Bonds and Other interview of Investment Income. A "timeshare" is an "Other" asset (may or may not be reported on 1099-S).

See Where do I enter the sale of a second home, an inherited home, or land on my 2018 taxes? for instructions (disregard the 2018 - instructions are the same).

See the following sample screenshots for aid in navigating (they are from a desktop program and the description is "Lan" but they are the same you would see for a "Timeshare". The last screen gives you the option of adding sell ing cost that were not reflected in the "Cost or Other basis".