Why is line 4a form 1040 not adding IRA income to the other pension income? Line 4a is less than 4b. How can that be?

[Just-Lisa-Now- · Accepted solution]

If the IRA has the same amount for gross and taxable, the gross amount doesn't transfer to line 4a...could this be what you're seeing?

It worked the same way last year, but pensions and IRAs were on 2 different lines so it didn't look so odd.

[poolcleaner]

It doesn't sound as if it fits, but is it possible that there is a basis in the IRA?  Look at Form 8606 to see if that is the problem.