Why does the interest income on my 1099 differ from my activity statement?

Interest income is reported in box 1 of the Form 1099-INT for U.S. tax payers. This box includes:

  • Credit interest on long cash balances
  • Credit interest associated with proceeds from short stock sales

Interest income for Form 1099-INT purposes is reported on a gross basis in accordance with IRS requirements and may not match the interest income as reported on the annual activity statement for the same year.  The annual activity statement may also include the following items not included within box 1 of the Form 1099-INT:

  • Debit interest charged to you on margin loans
  • Fees for borrowing securities associated with short sales
  • Interest charged on long cash balances which are associated with a negative interest rate

Note: IBKR does not offer tax guidance and advice and account holders should consult a tax specialist to determine the proper reporting of credit and debit items referenced above.

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