Originally Posted by: wyre 
…the “Advantage” plan would trigger an additional part D IRMAA , for those who are already subject to the part B surcharge. ( it’s in the small print). I was tempted by the $900 rebate for part B … but I think I will stick with GEHA standard this year…
Even if a Part D IRMAA surcharge applies to higher-income enrollees in FEHB Medicare Advantage plans, (something I could not confirm after three separate calls to Aetna reps), the impact is much more modest than for Part B IRMAA surcharges. By way of example, the Part D IRMAA range per month for a single-filer is:
$12.40 for income above $91,000 up to $114,000
$32.10 for income above $114,000 up to $142,000
$51.70 for income above $142,000 up to $170,000
$71.30 for income above $170,000 but less than $500,000
$77.90 for income of $500,000 and above
Back in May, when commenting on Part D IRMAA in a separate thread in the Medicare and Health Care section, you indicated that the surcharge for you would be $12.30/month, a level which has since been raised to $12.40/month for 2022. That’s only $148.80 per year. But, even if your IRMAA income bracket exceeded $500,000, the premium surcharge would still only be $77.90/month, or $934.80 per year.
To avoid being subject to a potential IRMAA surcharge of $148.80 per year, you’ve chosen to stick with GEHA Standard. But does this choice save you money? It doesn’t appear so.
The Checkbook Guide shows that, regardless of income level, a retired self-only enrollee with average health expenses will save over $2,000 per year with Aetna Medicare Advantage versus GEHA Standard. If health expenses are high, the difference climbs to over $4,000. Since the Guide’s input parameters include one’s income level, I must assume that its cost-to-you numbers make allowance for Part B IRMAA. I am not as certain that it also makes allowance for potential Part D IRMAA. Let’s assume that it does NOT. Even so, you would still save somewhere between $2,000 and $4,000 per year by choosing the Aetna MA plan. And everyone else who is subject to a Part D IRMAA surcharge would also come out ahead, even at the top bracket where the comparative savings would range from around $1,000 to $3,000, depending on whether expenses were average or high for the year.