We bought a new home in 2018, but did not sell the original house. Do I need to fill out a special step when submitting my 2018 tax return to account new house purchase?

[Hal_Al · Accepted solution]

No.

When you get to the mortgage interest and real estate tax deductions  section, the new house is entered as your primary home and the hold house is treated as a 2nd home (unless you are renting it out).