If I enter 2 different D than Turbotax returns with error message telling me I have two identical code D entries, if I add the amounts together the Turbotax program will erroneously assume here was an excess 401K contribution for current tax year. If I omit the D22 amount, then I will get an error regarding the differential between taxable wages in Box 1 and Box 3 (i.e. the data entered on my W-2 form shows exactly why a portion of Gross Wages-Box1 was not taxable which is done by the entries listed in Box12. My W-2 shows that my combined elective 401k deferral for 2023 (the D-30,000 for 2023) and retroactive deferral for 2022 (D22 3357) were deducted from my Gross Wages from 2023 which is the same amount shown for Medicare wages in Box 3--- and Taxable wages in Box 1 is 33,357 less than Box 3. Although TT home and Business desktop version allows you to enter "additional information sheets" this information is never transmitted to IRS and simply acts as notes for the tax-payer. There should be something somewhere in the Turbotax program to allow a taxpayer to properly document the information on their W-2 to account for retroactive retirement deferrals for a prior tax year. I know the situation is not common, but its not unheard of and it is in the tax code/regulations. I also have a solo-401K plan because I also work as an independent contractor and I am allowed to contribute 20% of my net income minus 1/2 self-employment tax as an "employer" to my solo-401K, yet when I attempt to use the auto-calculate (maximize contribution to individual 401K) the turbotax program incorrectly comes up with an amount that would be equal to the amount I could have contributed as an "employee" had I not already contributed and maximized my employee contribution via my W-2 job. I am uncertain if the box in tubotax only works to calculate the maximum amount an "employee" can contribute, or if the turbotax program is not properly "seeing" the amounts I already enter in box 12 on my W-2. Any suggestions for either issue?
