Why does form 1040 not agree with form 8606 line 15c?

[46827r]

still have not addressed my question!

[Critter]

Your only other question on this forum is 2 years old ... but now the old lines 15 & 16 are combined on the new line 4 so you have to look at all your entries as they will not be as clean as in the past.

[dmertz]

As implied in Critter#2's answer, line 15c of Form 8606 only reports the taxable amount of distributions from traditional IRAs not converted to Roth.  Line 4b of 2018 Form 1040 reports the taxable amounts of distributions from *all* types of retirement accounts and from Roth conversions, so only if you had no retirement distributions taxable in 2018 other than distributions from traditional IRAs (not including Roth conversions) will line 4b of Form 1040 equal line 15c of Form 8606.  (The taxable amount of conversions from a traditional IRA to a Roth IRA appear separately on Form 8606 line 18.)

Also, if you are married filing jointly and both of you have taxable traditional IRA distributions not converted to Roth, the amount on line 4b will include the amounts from line 15c of both Forms 8606.

The amount on Form 1040 line 4b will never be less than the amount of Form 8606 line 15c, but it certainly can be more due to taxable distributions from other types of retirement accounts or from Roth conversions.

[46827r]

the only distribution from my standard IRA was entered on form 8606 line7 as well as the other required info concerning my IRA.
Turbo tax calculated the NON taxable portion and calculated that value for line15c. form 8606 states that number is to be also placed on form 1040 Line.
4b BUT 1040 line 4b is thousands higher! However 1040 line 4a shows the correct value.  turbo tax did not have the answer this morning
thanks

[dmertz]

This suggests that distributions other than those reportable on Form 8606 line 7 are being included on Form 1040 line 4b, such as pension, 401(k), 403(b), 457(b), federal TSP or annuity distributions, or Roth conversions, reported on Forms 1099-R other than the one being included on Form 8606 line 7.  All taxable amounts from all Forms 1099-R go on Form 1040 line 4b.

[46827r]

I don't think so.It looks like social security taxable amount  is listed separately on line 5b and

[dmertz]

SSA-1099 is not a Form 1099-R, so it goes on line 5, not line 4.

[VolvoGirl]

If that's the only 1099R you have then delete it and re enter it.  That may clear something out.