When do you report a CD?

Hi. I have several CDs in a foreign institution in Spain. They all started in January 2024 and they all spanned into 2025 (January 2025 and July 2025). Most of the CDs had a maturity of 12 months, but a couple of them have a maturity of 18 months. They all only pay the interests at their maturity. I have checked with the bank and said I will not receive the equivalent of a 1099-INT until next year because in the eyes of the Spanish legislation that income belongs to the 2025 fiscal year.

I have been asking some people and they are all giving me different answers. I have read some parts of publication 550 and I am still confused.

When do I need to report that money here in the US? Is it the same rule here in the US and report all income in 2026? Is there a difference if the CD is 12 months or 18 months?

Thank you in advance for your help.

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