You'll have ask the plan. SEC. 204 of the SECURE 2.0 Act allows the annuity payments from an annuity purchased within a defined contribution plan to be credited toward the RMD that would have applied based on the actuarial value of the pension at the end of the previous year, but it's not clear that this would apply to a pension buyout and it seems that the plan has not done this. It seems that the ability to do this may be an optional provision of the plan, meaning that the plan might not have to allow this option and might not even be able to allow this until the plan agreement is updated to reflect the new regulations. If it does apply, without knowing your age or the number of months during the year that you will have received the $5,900, it's impossible to know how much of the RMD for the year might have been satisfied by the pension payments.
