1099-BProceeds from Broker and Barter Exchange Transactions
Reports stock, crypto, mutual fund, and other investment sales. Shows your proceeds and cost basis for calculating capital gains or losses.
Who needs to file this form
Your broker or exchange sends a 1099-B when you sell stocks, bonds, mutual funds, ETFs, options, or (for 2026+) cryptocurrency. It's also generated for bond maturities and redemptions. If you sold any investment in a taxable account during the year, expect a 1099-B.
Key Deadlines
Broker must send 1099-B to you
February 15, 2027
Often included in a consolidated 1099 (may arrive mid-February with corrections)
File return reporting gains/losses
April 15, 2027
Step-by-Step Filing Guide
Review each transaction for accuracy
The 1099-B lists each sale: date acquired, date sold, proceeds (sale price), and cost basis. Verify against your own records. Brokers sometimes report incorrect basis, especially for transferred-in assets or crypto.
Classify as short-term or long-term
Held over 1 year = long-term (taxed at 0%, 15%, or 20%). Held 1 year or less = short-term (taxed as ordinary income, up to 37%). The holding period matters significantly -- long-term rates can save thousands.
Complete Form 8949
List each transaction on Form 8949, categorized by: (A) short-term with basis reported to IRS, (B) short-term without basis reported, (D) long-term with basis reported, (E) long-term without basis reported. Adjust basis if the 1099-B amount was incorrect.
Transfer totals to Schedule D
Carry totals from Form 8949 to Schedule D (Capital Gains and Losses). Schedule D nets your gains and losses and determines your total capital gain or loss for the year.
Apply the $3,000 capital loss deduction if applicable
If your total capital losses exceed gains, you can deduct up to $3,000 ($1,500 if married filing separately) of net capital losses against ordinary income. Excess losses carry forward to future years indefinitely.
Related Forms
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