Quick answer: Retiring at 70 delivers maximum Social Security benefits — 132% of your full retirement age benefit, the highest amount available. Combined with Medicare active for 5 years and full retirement account access, age 70 is the most financially optimized retirement age for guaranteed lifetime income. The trade-off is 3–8 more working years compared to full retirement age of 67.
No filing age produces more guaranteed income than 70. The 8% per year delay credit from FRA (67) to 70 adds 24% to the base benefit permanently — and all annual COLA increases are applied to this higher base, compounding the advantage over decades.
For someone with a $2,000/month FRA benefit: at 70, SS pays $2,480/month — or $29,760/year. Over a 20-year retirement (70–90), the total SS income from this benefit is $595,200. The same person claiming at 67 would receive $2,000/month = $480,000 over 20 years — $115,200 less. Waiting to 70 effectively "earns" an additional $115,200 in guaranteed income for a healthy retiree.
Retiring at 70 means Required Minimum Distributions begin in just 3 years at age 73. If your traditional IRA/401k balance is significant, this is the last window for proactive Roth conversion to reduce future mandatory distributions.
At 70 with $800K in a traditional IRA: at 73, RMDs start at approximately $29,100/year. Combined with SS at $29,760/year, total taxable income is $58,860 — in the 22% federal bracket. Converting $30,000–$50,000/year for 3 years to Roth reduces the IRA from $800K to $650K–$710K, cutting RMDs by 11–19% and saving $8,000–$25,000 in lifetime taxes. The 70–73 window is short but high-value.
Financially, for healthy workers, yes — waiting from 67 to 70 adds $480+/month in guaranteed SS income for life (on an average benefit). Over a 20-year retirement this is $115,000+ more in guaranteed income vs. claiming at 67, plus annual COLA increases on a higher base. The non-financial trade-off: 3 more years of work and 3 fewer years of retirement during your most active, healthiest years. This is a personal decision based on health, job satisfaction, and financial need.
At 70 with maximum SS, required savings are the lowest of any retirement age for the same lifestyle goal. If total expenses are $60K/year and SS covers $29,760, only $30,240/year is needed from portfolio ($2,520/month). At 4% withdrawal: $756,000 needed. At 3.5%: $864,000. Compare to retiring at 62 which requires $1.5M–$2M for the same lifestyle — retiring at 70 requires roughly 40–50% less savings.
Connect with a licensed SafeMoney advisor who specializes in retirement income planning and guaranteed income solutions. Or try the Social Security Timing Optimizer.