Social Security and Medicare are separate decisions with separate timing. You can delay Social Security to 70 for maximum benefits, but Medicare is tied to age 65 regardless. Claiming Social Security automatically enrolls you in Part A, which disqualifies HSA contributions. Plan retirement, Social Security, and Medicare together.
Coordinating Social Security and Medicare
Many New Mexicans don't realize that Social Security and Medicare are separate decisions with separate enrollment timing. You can take Social Security as early as 62 or as late as 70, but Medicare enrollment is tied to age 65 regardless.
Retiring at 65: The Standard Path
If you retire on or shortly after your 65th birthday:
- Your Medicare Initial Enrollment Period (IEP) covers your retirement
- Enroll in Parts A and B during your IEP (3 months before through 3 months after your birthday month)
- Consider Medigap during your 6-month Medigap Open Enrollment Period
- Enroll in Part D within your IEP if you don't have creditable coverage
- You can claim Social Security if eligible (early reduced benefit) or wait for full benefits
Retiring at 66 or 67: Full Retirement Age
If you continue working until your Social Security Full Retirement Age (FRA - 66 to 67 depending on birth year):
- You should have enrolled in Medicare Part A at 65 (free) unless on an HSA
- You may have delayed Part B due to large employer coverage
- When you retire, you have an 8-month Part B Special Enrollment Period
- You can start collecting unreduced Social Security at FRA
- Coordinate Medicare Advantage or Medigap enrollment with your Part B start date
Retiring at 68: Strategic Delay
Working until 68 has advantages for both Medicare and Social Security:
- Social Security delayed retirement credits: 8% per year past FRA
- You may still be contributing to HSA if you delayed Medicare entirely
- Your Medigap Open Enrollment timer doesn't start until you enroll in Part B
- Continued employer coverage may be more comprehensive than Medicare
Retiring at 70: Maximum Social Security
Age 70 is the latest you can delay Social Security to maximize benefits:
- 32% higher monthly Social Security benefit vs. claiming at FRA 66 (or 24% higher vs. FRA 67)
- Medicare Part B must be enrolled in (you can't delay it forever once you stop working)
- The 8-month SEP applies whenever you actually leave employer coverage
- HSA contributions stop when Medicare enrollment begins
The Social Security Auto-Enroll Trap
Critical: When you claim Social Security at age 65 or older, you're automatically enrolled in Medicare Part A. There's no way to opt out without forfeiting future Social Security benefits. This is a major trap for HSA contributors.
To preserve HSA eligibility:
- Do NOT claim Social Security retirement benefits before you want to enroll in Medicare
- Stop HSA contributions 6 months before claiming Social Security (due to Part A lookback)
- Plan your retirement date and Social Security claim date together
Coordinating Multiple Triggers
Retirement decisions are interconnected:
| Event | Triggers |
|---|---|
| Turn 65 | Medicare IEP starts; Medigap eligibility |
| Leave employer coverage | 8-month Part B SEP; 2-month Part D SEP |
| Claim Social Security | Automatic Part A enrollment (loses HSA eligibility) |
| Reach FRA (66/67) | No earnings test for Social Security |
| Turn 70 | Maximum Social Security delayed credits |
| Spouse retires | Loss of dependent coverage; SEP for you |
Working Past 70 in New Mexico
Many New Mexicans, especially federal retirees and professional services workers, continue working past 70. Special considerations:
- You're past your IEP and can't be in it
- You should have enrolled in Part A by now (unless avoiding for HSA)
- Part B SEP rules still apply when you actually leave employer coverage
- FEHB enrollees still working for the federal government can keep delaying Part B; once you retire, a later Part B means a late penalty
Sample Timeline: Working Past 65 to 68
- Age 64 (year before 65): Review employer benefits, verify large vs. small employer status, plan HSA strategy
- Age 65 birthday: Enroll in free Part A (unless HSA contributor); delay Part B if large employer
- Ages 65-68: Continue employer coverage; don't claim Social Security if you want HSA contributions
- 3 months before retirement (age 67/68): Get Form CMS-L564 ready; research Medigap and Part D plans
- Retirement date: Final paycheck, COBRA option presented (decline unless you have a gap)
- Month after retirement: Enroll in Part B using SEP; enroll in Medigap or Medicare Advantage
- Within 2 months: Enroll in Part D if needed
- Claim Social Security: Either at retirement, FRA, or 70 - whichever maximizes your benefit
Get a Personalized Retirement Medicare Timeline
Every retirement is different. A licensed Medicare agent can map out your specific timeline coordinating Medicare, Social Security, and your employer coverage.