MTV
Level 2

Understanding Income Section

I am using Turbotax Premier 2022 and am experiencing some confusion in the income section. I am retired, but I work 3 part-time jobs. Total income is well under $100,000 per year. I entered 3 different W-2 forms and the software showed the FED owing me $1,295. Then I enter a 1099-R (my pension) and now I owe $67. I decide to play with the software and create a new filing with everything being the same, but I just entered the 1099-R and it showed the FED owing me $640. Why the difference between wiping out $1,295 and owing $67 versus receiving $640 with just the 1099-R entered?