Hm. My employer attributed 401K to 2023 but HSA to 2024, although they came from the same payperiod/paycheck. Looks like an error. But which way?
Is there a way to tell for sure which way is correct? Is there a law, regulation, IRS ruling, or detailed explanation I could read about this? The employer is the state of WA, so it is very likely it is on the accrual basis.
