Need your help with numbers in 1099-B form

[AlexSagrat]

I'm really struggling to understand numbers in my 2025 1099-B form. Let me first provide data:

Supplemental

1099-B


My main question: what is the total income (from selling) I will be reporting to IRS and be taxed?

07/02/2025 is when everything was sold automatically due to my company being acquisitioned. As a result, the amount of money I got was around $20600. Where $26K/$27K comes from? Never had or received any interest or dividend. Never sold or invested myself. For example, sell date 01/21/2025 - definitely it's not me:

 

So I would really like to understand math as well as avoid incorrect taxes....

[MarilynG1]

For a sale of employee stock, the Cost Basis when entering your 1099-B in TurboTax will almost always need to be adjusted.  To help determine your correct cost basis, you need a Form 3922 that your employer issued when you exercised your option to purchase the shares.  It shows the Exercise Price of the shares (unless you know that amount).

Depending on what type of employee stock you had, you may have received a % discount that was added to your W-2 as ordinary income (15% is common).  This amount may be reported in Box 14. If that applies, divide that amount by the number of shares you exercised, and add it to the Exercise Price for a correct Cost Basis.  If you have that information, you can enter your 1099-B as reported and check the box 'my cost basis is missing or incorrect'.  On the next page, enter the correct basis.

If you don't have all the information, in the Stock Sales section, choose 'Employee Stock' and TurboTax helps you figure out your cost basis.

Here's more info on Employee Stock Purchase Plans.

@AlexSagrat 

[AlexSagrat]

In my case it's RSU and vesting only, no ESPP, no form 3922. Then everything was automatically sold in July 2025.

W2 box 14 has $16486.47 (RESTK). This is exactly the same amount as in short-term cost basis (seen in one of the screenshots). 

But there is also $9726.60 as long-term cost basis.

I had an option 'sell to cover taxes' enabled. Maybe amount from selling stocks to cover taxes was included in 1099-B? Otherwise I cannot explain  $16486.47 + $9726.60 total.

[ThomasM125]

The total income from selling that you will report and be taxed on is the proceeds of the stock sales less the associated cost of them. The proceeds of stocks sold to cover taxes would be included in the Form 1099-B. 

The proceeds of the investment sales is $27,280.26, the total in the first column of the first worksheet. The cost of those sales may be the cost basis reported on the Form 1099-B, or it may be something else. That same worksheet lists the dates acquired and dates sold. It appears the first row shows the stock sold to pay taxes, as the proceeds and cost basis are about the same and they were sold one day after purchased, so no gain is involved there which is typical. That would explain the approximate $6,000 discrepancy between what the proceeds were and what you received.

The second and third rows appear to be stocks acquired and then sold several months later. It may be that the Form 1099-B lists the correct cost basis of shares sold, but it may be wrong as often it won't factor in the income entered on your W-2 form. The only way to be sure would be to add what you paid for the shares, if anything, to the income reported on the W-2 forms. Since it seems you sold all of the shares, that would give you the correct cost basis. 

As mentioned by @MarilynG1 you can adjust the cost basis if it is wrong on the Form 1099-B entry.