62
Earliest possible
Benefit permanently reduced, and an earnings test applies if you keep working before full retirement age.
Timing, not investment advice
When you file changes your Medicare start date
Most people model the claiming-age decision on its own. We model it next to Medicare, because filing early triggers automatic enrolment and that has consequences you cannot undo.
Three ages that set everything else
Your own full retirement age depends on your year of birth.
67
Full retirement age
Your primary insurance amount, with no reduction and no delayed credit. The reference point for everything else.
70
Latest worth waiting for
Delayed retirement credits stop accruing at 70. Filing later than this gains nothing.
The break-even model
Arithmetic first, then judgement
Filing later means a larger monthly benefit and fewer months of it. The break-even age is where those two cross. It is worth knowing and it is not the answer on its own, because it says nothing about your health, your spouse's survivor benefit, whether you are still working, or whether you need the cash now.
- Filing before full retirement age applies a permanent reduction, and an earnings test can withhold benefits while you keep working.
- Delaying past full retirement age earns delayed retirement credits, which stop accruing at 70.
- For a married couple, the higher earner's filing age also sets the survivor benefit, which often outweighs the break-even arithmetic entirely.
- Taking benefits before 65 means automatic Medicare Part A and Part B enrolment at 65, which ends HSA contributions.
Questions about timing
Directly. If you are already taking Social Security when you turn 65 you are generally enrolled in Part A and Part B automatically. If you are not, nothing happens unless you act, and the Part B late enrolment penalty is waiting for people who assume otherwise.
Enrolling in any part of Medicare ends your eligibility to contribute to a Health Savings Account. Part A can also be backdated up to six months when you enrol late, which can retroactively disqualify contributions you already made. If you have an HSA, this conversation needs to happen before you file.
The age at which the larger delayed benefit has made up for the years of payments you skipped. It is arithmetic, not advice, and it ignores everything about your health, your spouse and your cash needs today.
We can model the arithmetic and show you the trade-offs, including the survivor benefit consequences for a spouse. We are not financial advisers and we do not give personalised investment advice. For a decision this size, model it with us and confirm it with your own financial and tax professionals.
Nothing on this page is financial, investment or tax advice, and no figure here is a projection of your benefit. Get your own benefit estimates from the Social Security Administration at ssa.gov.
Bring the Medicare question with you
Claiming age and your Part B start date are one decision wearing two hats. We model them together.
Our help is free to you. We are paid by the carrier you choose, and the premium is the same whether you use us or enrol on your own.