Complete retirement planning guide 2026
13 min read
Retirement planning is the longest-horizon financial decision most households make. Small changes to savings rate, account choice, and withdrawal strategy compound to six-figure differences over a 40-year career.
The 4% rule and its critics
The Bengen 4% rule says a retiree can safely withdraw 4% of starting portfolio value annually (inflation-adjusted) with a 95%+ success rate over 30 years. Recent research (Morningstar, Kitces) suggests 3.3–3.7% is safer in low-yield environments. Use the FIRE Number Calculator to derive your target.
Account hierarchy — fill in this order
- 401k up to employer match (free money)
- HSA if eligible (triple-tax-advantaged)
- Roth IRA if under income limits ($150k single MAGI phase-out start in 2026)
- Back to 401k up to IRS limit ($23,500 in 2026 for under-50)
- Mega-backdoor Roth (if plan allows after-tax + in-service rollover)
- Taxable brokerage
Social Security timing
Claim ages 62–70. Each year delayed past full retirement age (67 for those born 1960+) boosts benefit ~8% via delayed-retirement credits. The Social Security Optimizer computes life-expectancy-weighted claim strategy using SSA actuarial tables[1].
RMDs starting age 73 (75 in 2033)
SECURE 2.0 pushed the required minimum distribution age to 73 and to 75 starting 2033. Roth 401k RMDs eliminated starting 2026. Use RMD Calculator to project annual forced withdrawals.
Contribution limits for 2026
- 401(k) / 403(b) / TSP: $23,500 + $7,500 catch-up at 50+
- IRA / Roth IRA: $7,000 + $1,000 catch-up at 50+
- HSA: $4,300 self / $8,550 family
- SEP-IRA: 25% of compensation up to $70,000