In 2017, I received an award of RSU and my employer selected the option to sell to cover. 399 units vested on 4/15/2018. My employer uses eTrade to manage awards.
For my 2018 taxes, TurboTax imported my 2018 form 1099-B from eTrade (see below data) for vesting transaction but I think I may have made an error by entering a zero (0) in the field for "Cost or other basis" (box 1e). The 1099-B form listed proceeds of $1,037.44 and a zero (0) under "Cost or Other Basis". eTrade's Supplement statement (which has more data about the sale, see below data) also lists a Cost Basis of zero (0) but there is an "Adjusted Cost Basis" column which lists $1,029.00.
I already filed, but I clicked the amend button and tried to change the amount in the "Cost or other basis" (box 1e) in TurboTax from zero (0) to $1,029.00 and it shows that I'm due an additional refund for both my federal and state returns. It also shows a gain of $8 (vs. $1,037.44), which is consistent with what is shown on eTrade's Supplement statement. So my question is, should I update the Adjusted Cost Basis in TurboTax from zero (0) to $1,029.00?
1099-B Form (short term, non-covered):
QTY Sold: 140
Date Acquired: 4/15
Date Sold (box 1c): 4/19
Proceeds (box 1d): $1,037.44
Cost Basis: $0.00
Gain/Loss Amount: $1,037.44
eTrade Supplement statement:
QTY: 140
Date Acquired: 4/15
Date Sold: 4/19
Proceeds: $1,037.44
Cost Basis: $0.00
Adjustment Amount: $1,029.00
Adjusted Cost Basis: $1,029.00
Adjusted Gain: $8.44
