I have two 2024 1099-INT statements from Fidelity Investments that include the Accrued Market Discount on the purchase/sale of US T-bills in box 3 as US Government interest. In both cases, the T-bills being reported were zero coupon. I have Accrued Market Discount on several other US T-bills that did have coupon interest. The Accrued Market Discount for these were reported by Fidelity Investments on 1099-B as short-term gain, and the coupon interest was reported in box 3 of the 1099-INT. There may be an explanation for this different treatment, but I'm not sure what it would be. It just seems like a lot of confusion to me.
