Use a Lower Withdrawal Rate
The 4% rule was designed for a 30-year retirement. For a 35-year horizon (65 to 100), research suggests 3–3.5% is safer. The annual difference feels modest but the cumulative effect of a lower withdrawal rate on portfolio longevity is substantial. Plan for 3.5%. Hope you only need 4%.
Build Inflation Protection In
At 2% average inflation, $100,000 of purchasing power today becomes $55,000 in 30 years. At 3%, it's $40,000. Inflation is the quiet killer of long retirements. Counter it with: TIPS, I-bonds, dividend growth equities, real estate, and Social Security (which COLAs annually).
Plan Explicitly for Long-Term Care
The median long-term care need begins around age 82 and lasts 2–3 years on average — but outliers exist. Memory care facilities often run $8,000–$12,000/month. Options: dedicated LTC insurance, hybrid life/LTC policies, Medicaid planning, or self-insuring via dedicated reserves. Ignoring this is the most common financial mistake in longevity planning.
Create a Strategic Gifting Plan
The annual gift tax exclusion allows significant wealth transfer without estate tax implications. A 90-year time horizon gives decades to move assets to heirs tax-efficiently. Starting at 65 rather than 85 means 20 more years of compound gifting — and the recipients have longer to put the assets to work.
Keep Estate Documents Current
A will, revocable living trust, durable power of attorney, and advance healthcare directive form the core estate document set. Review every five years. After any major life change — marriage, divorce, death of a named beneficiary, significant asset change — review immediately. Outdated documents create exactly the problems you built a plan to avoid.