HSA contribution and Medicare 6 months backward enrollment in part A

[GG77]

Hello, 

I was covered by a High Deductible Health plan in 2024 (from Jan to Dec).
I also contributed the maximum allowed into a HSA from Jan to October.
In October I was laid off and had to apply for Medicare from Jan 01, 2025. 

Medicare approved my application for Part B from Jan 1, 2025, but added Part A starting from April 1, 2024.  Is this a common practice for Medicare ?
I am preparing my taxes using TT and it states that I have an excess contribution (the amounts that were deposited to my HSA from April till October). 
Is that correct ? 

Is there any way to move the start date of Medicare Part A  to later in 2024 or even Jan 1, 2025 (when Part B starts) ?

Thank you very much in advance !

[BillM223]

"...added Part A starting from April 1, 2024. Is this a common practice for Medicare ?"

Yes. If you are more than 65, Medicare will backdate Part A to your 65th birthday (but no more than 6 months back).

"...it states that I have an excess contribution (the amounts that were deposited to my HSA from April till October). Is that correct ? "

Yes, your annual HSA contribution limit is prorated based on the number of months you had HDHP coverage, and no conflicting coverage (like Medicare). You had three months of coverage.

"Is there any way to move the start date of Medicare Part A  to later in 2024 or even Jan 1, 2025 (when Part B starts) ?"

No, the SSA won't move it. They think they are doing you a favor by backdating it 6 months. They don't realize what it is doing to owners of HSAs.