Get your taxes done using TurboTax

"Are you sure that my broker would send a 1099B to the IRS that shows all these 5 lines, instead of just one line showing the $25,000 total sale and the date sold for that entire transaction?"

I assume that the broker reported in accordance with IRS guidelines.  IRS form 8949 Sales and Other Dispositions of Capital Assets code B reads (B) Short-term transactions reported on Form(s) 1099-B showing basis wasn’t reported to the IRS.

You should report the correct basis and pay the correct amount of tax owed for your income level.

Do you have access to a PDF file of the IRS form 1099-B reporting the $25,000 transaction(s)?  If so, you may be able to report the Sales section total and upload a PDF of the IRS form 1099-B or mail a paper copy of the IRS form 1099-B to the IRS after electronically filing.

In TurboTax Online Premium, enter summary information instead of each individual transaction by following these steps:

• Down the left side of the screen, click on Federal.
• Down the left side of the screen, click on Wages & Income.
• Scroll down to Investments and Savings and click the down arrow to the right.
• Click Start / Revisit to the right of Stocks, Cryptocurrency, Mutual Funds, Bonds, Other.
• Click Add investments.
• At the screen Let's import your tax info, click Enter a different way.
• Click on Stock, Bonds, Mutual funds. Click  Continue.
• At the screen Which bank or brokerage is on your 1099-B, enter the information. Click Continue.
• Do these sales include any employee stock, click No.
• Do you have more than three sales on your 1099-B, click Yes.
• Do these sales include any other types of investments, click No.
• Did you buy every investment listed on your 1099-B, click Yes.  Click Continue.
• At the screen Now, choose how to enter your sales, select Sales section totals.  Click Continue.
• At the screen Look for your sales on your 1099-B, click Continue.
• At the screen Now enter one sales total on this 1099-B, enter information. 
• Under Sales section, select Short-term basis not reported to IRS (noncovered).
• Select the box I need to adjust my total cost basis.
• Enter the adjustment and select code B (cost basis incorrect on form).
• Click Continue.
• At the screen Review your sales section total, verify correct gain/loss.  Correct by clicking the pencil icon. or Click Continue.
• At the screen Now we'll help you upload your 1099-B since the IRS requires a copy, select Browse.
• Upload the 1099-B in PDF format from your provider.
• Upload successful, click Continue.