My taxes are very simple and H & R Block Deluxe tax preparation software easily completes the calculations for my return and e-files. It is less expensive than the popular Turbo Tax, but I find it less intuitive as a user.
I've been using this software for years now and even though I'm retired with multiple income streams (Social Security, Pension, Stocks & Bonds, 401K), it easily handles it all.
Besides being fairly easy, the best thing is it knows what to do with deductions, interest and dividends and stock gains and losses. I would have no idea what qualifies and where to put it.