Social Security with fewer than 35 years of work
The formula always divides by 35 years. What you lose for each missing one depends on where your average lands.
Checked by Radif Partners · Editorial policy · How we calculate
Social Security averages your 35 highest years of indexed earnings over 420 months, whatever the length of your career. With fewer than 35 years, the missing years enter the average as zeros: 25 years of work at $70,000 in today's pay give an AIME of $4,166 instead of $5,833, a cut of 10/35. The PIA falls less than that, because the formula replaces the first $1,286 of AIME at 90% and the zeros come off the top, at 32% or 15%. For a worker born in 1964, the PIA is $2,612.40 with 35 years, $2,079.00 with 25, $1,812.40 with 20 and $1,279.00 with 10, or 49% of the full-career amount with under a third of the years. You still need 40 credits, about ten years, to qualify. Each extra year that replaces a zero adds roughly $53 a month at this salary, for life.
What one more working year adds
PIA gain from one more year
$38.00 a month
| PIA now | $1,698.20 |
| Zero years in the average | 10 |
| PIA with one more year | $1,736.20 |
Born 1964, years ending at 62, same pay each year relative to the average wage.
The table: $70,000 a year, from 10 to 35 years
| Years worked | Zero years | AIME | PIA | Share of 35-year PIA | At 62 |
|---|---|---|---|---|---|
| 10 | 25 | $1,666 | $1,279.00 | 49% | $895 |
| 15 | 20 | $2,499 | $1,545.50 | 59% | $1,081 |
| 20 | 15 | $3,333 | $1,812.40 | 69% | $1,268 |
| 25 | 10 | $4,166 | $2,079.00 | 80% | $1,455 |
| 30 | 5 | $4,999 | $2,345.50 | 90% | $1,641 |
| 32 | 3 | $5,333 | $2,452.40 | 94% | $1,716 |
| 34 | 1 | $5,666 | $2,559.00 | 98% | $1,791 |
| 35 | 0 | $5,833 | $2,612.40 | 100% | $1,828 |
The AIME falls in a straight line, one thirty-fifth per missing year. The PIA does not: it falls slowly while the AIME is above $1,286, because each lost dollar of AIME only costs 32 cents, then faster below that point, where each dollar costs 90 cents. That kink is the first bend point.
What a single year is worth
| Years worked | Monthly PIA gain |
|---|---|
| 15 to 16 | $53.50 |
| 25 to 26 | $53.40 |
| 34 to 35 | $53.40 |
At this salary each added year is worth about the same amount as long as the AIME stays in the 32% bracket: $70,000 divided by 420 months, times 0.32. The 35th year is worth about as much as the 16th. After the 35th, a further year at the same pay is worth nothing, since it only ties with the years already counted. For someone close to 62 with a few zeros left, that makes the last working years among the most valuable of the career. The working after full retirement age page covers years added after benefits start.
Low pay, short career: the 90% bracket
The cushion is strongest for lower earners. A worker at $30,000 for 35 years has an AIME of $2,499; with 20 years it falls to $1,428, now inside the 90% bracket. The PIA goes from $1,545.50 to $1,202.80, 78% of the full amount. That is by design: the formula returns most on the first dollars of the average, which is where people with short or low-paid careers sit.
Who has fewer than 35 years
- People who started late after long studies, or stopped early.
- Parents who left work for years to raise children: there is no caregiver credit in the retirement formula, the years are zeros.
- Immigrants who arrived mid-career and have no U.S. earnings for their early years.
- Workers with years in jobs not covered by Social Security, whose pension came from another system.
For the last group, the Windfall Elimination Provision used to cut the formula further. It was repealed by the Social Security Fairness Act for benefits payable from January 2024, so the plain formula above now applies to everyone.
Checking your own count
Open your earnings record and count the years with covered earnings; a year before 22 counts too if it is among your best. Fewer than 35 means zeros in your average. The mini-calculator above gives the gain from one more year at a given pay; the full calculator does it on your real record. You also need 40 credits to qualify at all.