You will get a 1099R for it. It will be taxable.
Enter a 1099R under
Federal Taxes Tab or Personal (Home & Business)
Wages & Income at the top
Then scroll way down to Retirement Plans and Social Security,
Then IRA, 401(k), Pension Plans (1099R) - click Start or Revisit
There are 4 boxes. Be sure to pick the right box for the kind of 1099R you got.