Retirement tax questions

I converted $20,000 to a Roth.  I know that I owe taxes on the amount.  It was a 401K put into an IRA and then converted.  Turbo Tax is telling me that I don't owe taxes on that amount, even though I "moved the money" and "did a combination of things" and then entered the conversion amount in the lower box.  It is taxable, I know it.