How to use the Social Security
- Enter your estimated benefit at full retirement age.
- Enter your full retirement age and the age you plan to claim.
- Read the adjusted monthly benefit.
- Compare cumulative lifetime totals at different claiming ages.
How the calculation works
Early claiming reduces the primary insurance amount by roughly 5/9 of 1% per month for the first 36 months early, and 5/12 of 1% per month beyond that — about 30% at 62 against a full retirement age of 67. Delaying past full retirement age earns delayed retirement credits of about 8% a year up to age 70, giving roughly a 24% uplift.
The break-even between claiming at 62 and 70 typically falls in the late seventies to early eighties. Longevity, marital status and whether you are still working all shift the answer: a surviving spouse inherits the higher benefit, which strengthens the case for the higher earner to delay, while poor health or an urgent income need argues for claiming sooner. Benefits may also be partly taxable depending on combined income.
Benefit = PIA × (1 − early reduction) or PIA × (1 + 0.08 × years delayed past FRA)Source: US Social Security Administration rules on early retirement reduction and delayed retirement credits.
Worked example
PIA of 2,400 at full retirement age 67, comparing claims at 62 and 70.
- Claiming at 62 is 60 months early: reduction ≈ 30%, giving 1,680.
- Claiming at 70 adds three years of credits: +24%, giving 2,976.
- Monthly difference = 1,296.
- Early claimant banks 8 years × 12 × 1,680 = 161,280 head start.
Break-even lands around age 80.5 — delaying wins only if you live beyond that.
Frequently asked questions
What is full retirement age?+
It depends on birth year, ranging from 66 to 67 for people retiring now.
Is claiming early always wrong?+
No. It is right for those with health concerns, no other income, or a need to stop working.
Do benefits rise with inflation?+
Yes, through annual cost-of-living adjustments applied to the benefit amount.
Are benefits taxed?+
Up to 85% can be taxable once combined income exceeds set thresholds.
Last reviewed August 31, 2026. We review this page whenever the underlying formula, tax year, published rate or standard changes.