The cost basis on my 1099B differs from what is on the supplemental stock plan lot detail

Forum|Forum|6 years ago
June 7, 2019
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The cost basis on my 1099B differs from what is on the supplemental stock plan lot detail for stock I sold from an employee stock plan. My realized gain on my 1099b is $2480.08 but on my Supplemental, I have a realized loss of -$61.37 because on the Supplemental, my Adjusted cost/basis is higher. How do I account for this?

TurboTax Self Employed Online

Best answer by AmandaR1

To enter your corrected cost basis, in the investment section for 1099-B:

Select to enter your information by transaction.
On the next screen, you'll enter boxes 1a-1e.
Directly below these boxes, click the blue button to enter additional Info about this sale, "I'll enter additional info on my own."
On the next screen, you'll have the option to enter corrected cost basis which is where you can enter your correct amount.

Employee stock options get complicated and often your broker does not have information about your W-2 income when the options vest. I'd recommend being sure you understand how the cost basis is calculated so you know it's correct.

AmandaR1Answer

Employee

To enter your corrected cost basis, in the investment section for 1099-B:

Select to enter your information by transaction.
On the next screen, you'll enter boxes 1a-1e.
Directly below these boxes, click the blue button to enter additional Info about this sale, "I'll enter additional info on my own."
On the next screen, you'll have the option to enter corrected cost basis which is where you can enter your correct amount.

robmob

Thank you for posting this activity. I must be missing something because my situation is identical to the original person posting their question, but I can't seem to find the "enter additional information on my own" in the transaction area. Do I need to delete the transaction and start over?