Before you turn 65, you face the most consequential financial decisions of your life: Medicare enrollment, Social Security timing, withdrawal strategy, and the shift from saving to spending. The difference between getting these right and wrong can be hundreds of thousands of dollars over a 25-30 year retirement.

Critical Deadlines Before and At 65

Age Deadline Action Required
59½ Penalty-free 401(k)/IRA withdrawals Can access retirement accounts without 10% penalty
62 Earliest Social Security eligibility Can claim (at reduced benefit)
64 and 9 months Medicare Initial Enrollment begins 3 months before 65th birthday
65 Medicare enrollment deadline Parts A & B (or face permanent penalty)
65 Medigap open enrollment 6-month window for guaranteed issue
66-67 Full Retirement Age (FRA) Full Social Security benefit (no reduction)
70 Maximum Social Security benefit No further benefit increase after 70
70½ Legacy RMD age (pre-SECURE Act)
73 Required Minimum Distributions (RMDs) Must start withdrawing from Traditional 401(k)/IRA

Financial Checklist: The 5 Years Before 65

# Task When
1 Project retirement income (Social Security + savings + pension) 5 years before
2 Create a retirement budget (realistic monthly expenses) 5 years before
3 Maximize catch-up contributions Ongoing
4 Consider Roth conversions before RMDs begin 5-10 years before 73
5 Pay off mortgage and all debt Before retirement
6 Plan Social Security claiming strategy 3-5 years before claiming
7 Research Medicare options (Parts A, B, C, D, Medigap) 1 year before 65
8 Enroll in Medicare during Initial Enrollment Period 3 months before turning 65
9 Review estate plan (will, trusts, POA, beneficiaries) Annually
10 Create a tax-efficient withdrawal strategy 1-2 years before retirement
11 Review long-term care plan Before 65 (insurance cheaper now)
12 Test-drive your retirement budget for 3-6 months 1 year before retirement

Medicare Quick Guide

Part What It Covers Monthly Cost (2025)
Part A Hospital, skilled nursing, hospice $0 for most (paid through payroll taxes)
Part B Doctor visits, outpatient, preventive $185/month (standard; income-based)
Part D Prescription drugs $15-$100/month (varies by plan)
Medigap (Supplement) Covers gaps in Parts A & B (copays, coinsurance) $100-$300/month
Part C (Medicare Advantage) Alternative to Original Medicare; includes Parts A, B, often D $0-$100/month (but may have network restrictions)

Original Medicare (A + B + D + Medigap) vs. Medicare Advantage (Part C) is the biggest decision. Original Medicare offers more provider flexibility; Advantage plans may cost less but limit networks.

Social Security Claiming Strategy

Claiming Age Monthly Benefit (if FRA benefit = $2,500) Lifetime Total if You Live to 85
62 $1,750 (30% reduction) $483,000
65 $2,167 $520,000
67 (FRA) $2,500 $540,000
70 $3,100 (24% increase) $558,000

If you live past ~80, delaying Social Security to 70 produces the most lifetime income.

Tax-Efficient Withdrawal Order

Priority Account Type Why This Order
1 Taxable accounts (brokerage) Taxed at capital gains rate (lower); preserves tax-advantaged accounts
2 Traditional 401(k) / IRA Taxed as ordinary income; must take RMDs at 73
3 Roth IRA / Roth 401(k) Tax-free; grows longest; no RMDs (Roth IRA)
Strategic Roth conversions Convert Traditional to Roth in low-income years before 73 to reduce future RMDs

Healthcare Costs in Retirement

Expense Annual Cost (per person)
Medicare Part B premiums $2,220
Medicare Part D premiums $180-$1,200
Medigap premiums $1,200-$3,600
Out-of-pocket (copays, deductibles) $2,000-$5,000
Dental and vision (not covered by Medicare) $1,000-$3,000
Total annual healthcare cost $6,600-$15,000
Total healthcare cost over 20-year retirement $132,000-$300,000

Common Mistakes That Cost Retirees

Mistake Cost
Missing Medicare enrollment 10% permanent premium increase per year late
Claiming Social Security too early 25-30% permanent reduction in monthly benefit
No Roth conversion strategy Higher RMDs and taxes later
Ignoring IRMAA (income-adjusted Medicare premiums) Higher Medicare costs for higher-income retirees
Underestimating healthcare costs $300K+ over retirement
Not having a withdrawal strategy Paying more taxes than necessary
Retiring with debt Monthly obligations reduce retirement flexibility
No long-term care plan Average nursing home: $100K+/year

The Bottom Line

The 5 years before 65 are the most critical planning window of your financial life. Enroll in Medicare on time (avoid the permanent penalty), optimize your Social Security claiming age, create a tax-efficient withdrawal strategy, and plan for healthcare costs that Medicare doesn’t fully cover. Every decision made in this window compounds for the next 20-30 years. This is the time to work with a fee-only financial advisor if you haven’t already.

Related: Things to Do Before Retiring | Things to Do 5 Years Before Retirement | Things to Know Before Claiming Social Security