I just retired from my job at age 65 effective 3/31/17. I was contributing to an HSA up until 3/31/17.

SSA says I will be penalized if I start taking my Social Security benefits now because SSA will automatically go back 6 months from when I sign up for retirement benefits for Medicare Part A. No one at SSA could tell me how the penalty works.

In which month can I safely sign up for SSA retirement benefits (and thus Medicare Part A) without being penalized? How is the penalty calculated and how long will I have to pay the penalty? Does it make sense to delay collecting retirement benefits to avoid the penalty?

  • Have you had health insurance since 3/31/17? And, how much did you contribute to your HSA this year?
    – TTT
    Commented Jul 3, 2017 at 15:38
  • Chris, thanks for your prompt response. From Jan.-March,2017, I contributed about $924.00 with a company match of about $100.00. My husband added me to his health coverage so I would not be without health insurance, effective May 2017. His premium increase is a little less than what I would pay for medical part b and a supplemental plan. As you mentioned, it may make sense to start my benefits now rather than forfeit 3-4 months of income (age 66). Commented Jul 3, 2017 at 22:38

1 Answer 1


The "6 month rule" essentially says you must stop contributing to an HSA account 6 months before you start your Medicare Part A plan. According to this Time article, it may be the case that the penalty is not enforced:

In fact, the IRS rules say you need to stop contributions six months before Social Security benefits begin, although I’ve never heard from anyone who lost tax benefits or was hit by an IRS penalty for such contributions.

Strangely, I can not find the "IRS rules" that the article links to, only this:

Enrolled in Medicare. Beginning with the first month you are enrolled in Medicare, your contribution limit is zero.

Example. You turned age 65 in July 2016 and enrolled in Medicare. You had an HDHP with self-only coverage and are eligible for an additional contribution of $1,000. Your contribution limit is $2,175 ($4,350 × 6 ÷ 12).

Perhaps the reason the penalty is not enforced is because according to the IRS the 6 month rule doesn't actually exist? In other words, you were still legally covered by an HDHP until a certain date and were therefore eligible to make HSA contributions until that date. The fact the Medicare back dates coverage 6 months simply means you potentially had double coverage, but doesn't change the fact that you had a valid HDHP at the time the HSA contributions were made.

Note that even if you wait the 6 months, you may still need to undo any contributions which are more than 1/4 year's worth of eligibility (if you have had more than that this year already). Beyond that, if there is a penalty which is enforced, it means the "excess contributions" (the first 1/4 year's worth) would become taxable income AND you would pay an additional 6% excise tax.

So, I believe your options come down to this:

  1. If you are concerned about the the penalty, you could reverse the contributions made during the last 6 months and treat them as if they did not happen.
  2. You could wait out the 6 months and not have to worry about the penalty.
  3. You could assume the penalty isn't enforced and move forward.

My guess is that the amount you will receive in SS will more than make up for the difference in possible penalty you will pay, so I would probably lean towards option 3. However, if you are approaching a birthday, it might make sense to wait it out as each year you defer you increase your payment for the rest of your life. (Though you'll want to look into whether the 6 month rule means you have to wait until you turn 66.5 before starting benefits.)

  • 1
    It wasn't available when you posted this, but Pub 969 for 2017 and later clarifies: Enrolled in Medicare. Beginning with the first month you are enrolled in Medicare, your contribution limit is zero.This rule applies to periods of retroactive Medicare coverage. So, if you delayed applying for Medicare and later your enrollment is back dated, any contributions to your HSA made during the period of retroactive coverage are considered excess. See Excess contributions, later. Commented Oct 4, 2020 at 6:23

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