The W‑9 is the form for US taxpayers.
If you earn more than $10.00 in interest during the year, we need to report it to the US Internal Revenue Service (IRS). We use Form 1099-INT to report this information for US taxpayers and members without a valid tax certification. If you are US taxpayer, complete the IRS Form W-9. If you receive a Form 1099-INT, include it in your tax filing.