Retirement timing is one of the most consequential decisions in anyone’s financial life. Mistime it by even a few years and the financial and lifestyle consequences compound for decades.

Mistake 1: Retiring Before Medicare Without a Healthcare Plan

Medicare begins at 65. Retiring before this age without a healthcare bridge strategy is the most underplanned retirement cost.

Private insurance costs for early retirees:

Age at Retirement Annual Health Insurance Cost (Individual, Unsubsidized ACA)
60 $9,000-$18,000
62 $10,500-$20,000
63 $11,000-$21,000
64 $11,500-$22,000

Note: ACA subsidies can substantially reduce these costs for those with income below 400% FPL (~$62,000 single/~$84,000 couple in 2026)

Fix: Before retiring before 65, calculate your exact healthcare bridge cost and add it to your retirement income requirement.

Mistake 2: Retiring Into a Bear Market Without a Cash Buffer

Retiring at the peak of a bull market, with no cash buffer, means your first withdrawal years may coincide with a major downturn — forcing you to sell investments at a loss for living expenses.

The sequence-of-returns problem:

Scenario Portfolio Start Year 1 Return Year 2 Return $60K Annual Withdrawals Portfolio After 2 Years
Good sequence $1,000,000 +15% +10% Yes ~$1,075,000
Bad sequence $1,000,000 -30% -20% Yes ~$578,000

The “bad sequence” portfolio is now half the size — and the 4% rule applied to $578,000 only supports $23,000/year sustainably. The same $1M portfolio with early losses has permanently compromised retirement income.

Fix: Hold 2 years of living expenses in cash/stable value before retiring. Rebalance from equities in good years, not bad ones.

Mistake 3: The “One More Year” Trap (Retiring Too Late)

As dangerous as retiring too early is the opposite error: never feeling secure enough to retire.

Signs you may have “one more year syndrome”:

  • You have hit your original savings target but moved the goal post
  • You have pension/Social Security income that covers your basic expenses already
  • You are working primarily out of fear, not because you need the income
  • Your health is declining and you’re trading retirement years for marginal financial security

The financial case for retiring on time: Years of retirement are more valuable in your 60s and early 70s when health and mobility are best. Working an extra 3 years to add $200,000 to a portfolio that’s already sufficient isn’t a financial win if those 3 working years replace 3 of your best retirement years.

Mistake 4: Abrupt Full-Stop Retirement Without a Transition Plan

Going from full-time work directly to zero work creates both financial and psychological risk.

Financial case for phased retirement:

  • Continued income reduces portfolio withdrawal rate in early retirement
  • Health insurance may remain employer-subsidized
  • Social Security delay adds 8%/year in benefit for every year past FRA
  • Part-time income taxed at lower rates than full-time

Sample phased retirement path:

Age Work Status Income Change
63 Full-time 100%
64 Reduced hours/flex 70%
65 Consulting/part-time 40%
66-67 Optional work 10-20%
67 Full retirement 0% (SS + portfolio)

Mistake 5: Retiring to Nothing Rather Than Something

Research on retirement wellbeing consistently shows that people who retire into defined activities, social structures, and purpose report far better outcomes than those who “stop working” without a replacement structure.

Financial consequence of poor retirement purpose: Boredom and lack of structure in early retirement correlates with higher spending on consumption (travel, entertainment, shopping) to fill the void — which accelerates portfolio depletion beyond the planned withdrawal rate.

Fix: Before retiring, have a clear plan for daily structure, social connection, and meaningful activity. This is a financial planning item, not just a lifestyle one.

Mistake 6: Retiring Before Your Highest-Earning Spouse

If both spouses work, the highest earner’s Social Security benefit is the survivor benefit — the income the surviving spouse will live on for potentially decades after the first partner dies.

Asymmetric timing strategy:

  • Lower earner can claim Social Security earlier if needed for income
  • Higher earner should delay to 70 to maximize the survivor benefit
  • This is worth hundreds of thousands of dollars in protected lifetime income

Fix: Coordinate Social Security claiming as a joint strategy, not two independent decisions.

Related: Social Security Claiming Mistakes | Financial Mistakes in Your 60s | Pre-Retirement Mistakes | Medicare Mistakes