Social Security's $184,500 wage cap is $60,600 times 3.045
The taxable maximum is a 1994 figure scaled by a wage index with a two-year lag, rounded to $300. The arithmetic, and what is unannounced for 2027.
◆ The Signal
30-second read
- What happened
- The 2026 Social Security contribution and benefit base is $184,500, up from $176,100 in 2025. SSA's own worked example shows it is $60,600 multiplied by the 2024 national average wage index (69,846.57) divided by the 1992 index (22,935.42), which gives $184,548.71 before rounding to the nearest $300.
- Why
- Section 230 of the Social Security Act fixes the 1994 base and the 1992 index as anchors. Every later base is that anchor scaled by wage growth, measured two years in arrears, and it only moves in a year when a cost-of-living adjustment takes effect.
- The numbers that matter
- $184,500OASDI taxable maximum, 202669,846.57National average wage index, 2024 (latest published)4.84%Rise in the wage index, 2023 to 2024$11,439Employee OASDI tax at the 2026 cap, 6.2%
- Why it matters
- A worker at or above the cap paid $520.80 more in 2026 than in 2025 for the same 6.2% rate, and every dollar of earnings above the cap is neither taxed for OASDI nor counted toward a benefit. The 2027 cap depends on the 2025 wage index, which SSA had not published as of October 12, 2026.
- What happens nextas we saw it on 13 Oct 2026
- BLS releases the September 2026 CPI on October 14, 2026, at 8:30 AM Eastern. That is the last input to the December 2026 COLA, and under section 230(a) the Commissioner must publish the 2027 base on or before November 1, 2026.
Contribution and benefit base
The cap rose $37,500 in four years, every step produced by the same formula from the national average wage index.
| 2022 | 147000 |
|---|---|
| 2023 | 160200 |
| 2024 | 168600 |
| 2025 | 176100 |
| 2026 | 184500 |
US dollars, OASDI contribution and benefit base, by calendar yearSource: Social Security Administration, Office of the Chief Actuary, “Contribution and Benefit Base”, retrieved October 12, 2026
Go deeper
The figure that decides how much of a high earner's pay is taxed for Social Security, and how much of it counts toward a benefit, is not voted on. It is $60,600 multiplied by 3.045. The $60,600 is the taxable maximum for 1994. The 3.045 is how far the Social Security Administration's national average wage index had risen by 2024 against 1992. Round the product to the nearest $300 and you have $184,500, the 2026 cap.
That is the whole formula. It has been running unchanged since 1994, with a two-year lag built into the index it uses and one condition that has frozen the cap three times. This piece sets out the mechanism from SSA's own pages, works the 2026 number, and is explicit about what has and has not been announced for 2027. The companion piece on the COLA formula covers the benefit increase; this one is about the cap.
What the base is
Fact
One number caps both the tax and the credit
SSA's Office of the Chief Actuary calls it the contribution and benefit base, and notes it is also known as the taxable maximum. The OASDI (Old-Age, Survivors and Disability Insurance) program limits the earnings subject to tax in a year, and the same limit applies when those earnings are used to compute a benefit. For 2026 the base is $184,500. The OASDI rate is 6.2% for the employee and 6.2% for the employer; the self-employed rate is 12.4%.
SSA's Office of the Chief Actuary calls it the contribution and benefit base, and notes it is also known as the taxable maximum. The OASDI (Old-Age, Survivors and Disability Insurance) program limits the earnings subject to tax in a year, and the same limit applies when those earnings are used to compute a benefit. For 2026 the base is $184,500. The OASDI rate is 6.2% for the employee and 6.2% for the employer; the self-employed rate is 12.4%.
Wealth Signal calculation
The tax at the cap is $11,439 each for worker and employer
$184,500 × 6.2% = $11,439.00, paid by the employee, with the same amount paid by the employer (SSA states both figures on the page). A self-employed worker at the cap pays 12.4%, or $22,878. These are maxima: a worker earning $150,000 pays $9,300 (6.2% of $150,000), and the OASDI tax on earnings above $184,500 is zero.
$184,500 × 6.2% = $11,439.00, paid by the employee, with the same amount paid by the employer (SSA states both figures on the page). A self-employed worker at the cap pays 12.4%, or $22,878. These are maxima: a worker earning $150,000 pays $9,300 (6.2% of $150,000), and the OASDI tax on earnings above $184,500 is zero.
Medicare's Hospital Insurance tax is different. SSA's page records that HI shared the OASDI maximum from 1966 to 1990, had its own higher maximum from 1991 to 1993, and has had no limit since 1994. The HI rate is 1.45% each for employee and employer, with no cap, which is why the combined employee rate on SSA's 2026 fact sheet is 7.65% only up to $184,500 and 1.45% beyond it.
The formula, from the statute
Fact
Section 230 fixes two anchors: $60,600 and the 1992 wage index
Section 230(b) of the Social Security Act sets the base for any year after 1994 as the larger of the existing base or $60,600 multiplied by a ratio. The numerator is the national average wage index for the calendar year before the year in which the determination is made; the denominator is the index for 1992. The product is rounded to the nearest multiple of $300, and the statute specifies that a product landing exactly on a multiple of $150 but not of $300 is rounded up.
Section 230(b) of the Social Security Act sets the base for any year after 1994 as the larger of the existing base or $60,600 multiplied by a ratio. The numerator is the national average wage index for the calendar year before the year in which the determination is made; the denominator is the index for 1992. The product is rounded to the nearest multiple of $300, and the statute specifies that a product landing exactly on a multiple of $150 but not of $300 is rounded up.
Fact
The base only moves in a year when a COLA takes effect
Section 230(a) ties the determination to a cost-of-living increase under section 215(i) taking effect for December. SSA's actuaries state the same thing on their determination page: the formula applies only if a COLA takes effect for December of the year the base would otherwise be determined. A 2.8% COLA took effect for December 2025, so the formula ran for 2026. Section 230(a) also sets the publication deadline: the Commissioner must publish the base in the Federal Register on or before November 1 of the year in which the computation quarter falls.
Section 230(a) ties the determination to a cost-of-living increase under section 215(i) taking effect for December. SSA's actuaries state the same thing on their determination page: the formula applies only if a COLA takes effect for December of the year the base would otherwise be determined. A 2.8% COLA took effect for December 2025, so the formula ran for 2026. Section 230(a) also sets the publication deadline: the Commissioner must publish the base in the Federal Register on or before November 1 of the year in which the computation quarter falls.
Data
The cap froze in 2010, 2011 and 2016, the three years after a 0.0% COLA
SSA's COLA series shows 0.0% for December 2009, December 2010 and December 2015. Its base table shows $106,800 for 2009, 2010 and 2011, and $118,500 for 2015 and 2016. The index kept rising in those years (2.36% in 2010, 3.13% in 2011, 1.13% in 2016 on SSA's table), but with no COLA the trigger in section 230(a) was not pulled and the base did not change. When the COLA resumed, the ratio caught up in a single step: 2012's base was $110,100.
SSA's COLA series shows 0.0% for December 2009, December 2010 and December 2015. Its base table shows $106,800 for 2009, 2010 and 2011, and $118,500 for 2015 and 2016. The index kept rising in those years (2.36% in 2010, 3.13% in 2011, 1.13% in 2016 on SSA's table), but with no COLA the trigger in section 230(a) was not pulled and the base did not change. When the COLA resumed, the ratio caught up in a single step: 2012's base was $110,100.
Working the 2026 number
Wealth Signal calculation
$60,600 × 69,846.57 ÷ 22,935.42 = $184,548.71, rounded to $184,500
SSA's determination page gives the inputs. The 1994 base is $60,600. The 2024 national average wage index is 69,846.57. The 1992 index is 22,935.42. The ratio is 3.0454, the product is $184,548.71, and the nearest multiple of $300 is $184,500. That figure exceeds the 2025 base of $176,100, so it stands. Redoing the arithmetic here gives $184,548.71 to the cent, matching SSA.
SSA's determination page gives the inputs. The 1994 base is $60,600. The 2024 national average wage index is 69,846.57. The 1992 index is 22,935.42. The ratio is 3.0454, the product is $184,548.71, and the nearest multiple of $300 is $184,500. That figure exceeds the 2025 base of $176,100, so it stands. Redoing the arithmetic here gives $184,548.71 to the cent, matching SSA.
Fact
The index behind the 2026 cap describes wages earned in 2024
The lag is two years, by design: the base for year Y uses the index for year Y−2, because the full year's wage data for Y−1 does not exist when the base must be published by November 1 of Y−1. So the 2026 cap reflects 2024 pay, and the 2027 cap turns on the 2025 index.
The lag is two years, by design: the base for year Y uses the index for year Y−2, because the full year's wage data for Y−1 does not exist when the base must be published by November 1 of Y−1. So the 2026 cap reflects 2024 pay, and the 2027 cap turns on the 2025 index.
$60,600
Anchor: the 1994 base
Fixed in section 230(b)
22,935.42
Anchor: the 1992 wage index
Fixed in section 230(b)
69,846.57
2024 wage index
Latest value SSA had published as of Oct 12, 2026
$184,500
2026 base
$184,548.71 rounded to nearest $300
Where the index comes from
Fact
The index is average net compensation per worker, chained year to year
SSA's development page explains that the national average wage index for a year is the prior year's index multiplied by the change in average wages, where wages means net compensation per worker, not per job, and includes contributions to deferred compensation plans (coverage of those plans was widened in 1991 and 2019; SSA computes the raw change on a like-for-like basis across those breaks so the series stays smooth). For 2024 the page records average wages of $67,027.24, against $63,932.64 for 2023, from 175,073 thousand workers and aggregate wages of $11,734,670 million.
SSA's development page explains that the national average wage index for a year is the prior year's index multiplied by the change in average wages, where wages means net compensation per worker, not per job, and includes contributions to deferred compensation plans (coverage of those plans was widened in 1991 and 2019; SSA computes the raw change on a like-for-like basis across those breaks so the series stays smooth). For 2024 the page records average wages of $67,027.24, against $63,932.64 for 2023, from 175,073 thousand workers and aggregate wages of $11,734,670 million.
Wealth Signal calculation
Checking the 2024 index from the raw averages
66,621.80 (the 2023 index) × 67,027.24 ÷ 63,932.64 = 69,846.57. That is the published 2024 index, a rise of 4.84%, and the number that fed the 2026 cap. The raw average, $67,027.24, is a mean: SSA's net compensation page puts the 2023 median at an estimated $43,222.81 against the $63,932.64 mean, a ratio of 67.6%. The cap is scaled by the mean, which high earners pull up.
66,621.80 (the 2023 index) × 67,027.24 ÷ 63,932.64 = 69,846.57. That is the published 2024 index, a rise of 4.84%, and the number that fed the 2026 cap. The raw average, $67,027.24, is a mean: SSA's net compensation page puts the 2023 median at an estimated $43,222.81 against the $63,932.64 mean, a ratio of 67.6%. The cap is scaled by the mean, which high earners pull up.
| Base year | Index used (year) | Index value | Base | Change on prior base |
|---|---|---|---|---|
| 2022 | 2020 | 55,628.60 | $147,000 | — |
| 2023 | 2021 | 60,575.07 | $160,200 | +9.0% |
| 2024 | 2022 | 63,795.13 | $168,600 | +5.2% |
| 2025 | 2023 | 66,621.80 | $176,100 | +4.4% |
| 2026 | 2024 | 69,846.57 | $184,500 | +4.8% |
Source: SSA Office of the Chief Actuary, national average wage index series and contribution and benefit base tables, retrieved October 12, 2026. Percentage changes are our calculation from the base column.
The table makes the lag visible. The 9.0% jump in the 2023 cap was the 2021 index, which rose 8.89% on SSA's series, arriving two years later. Nothing about 2023's pay was in it.
What is and is not announced for 2027
Fact
As of October 12, 2026, SSA had published no 2025 wage index, no 2027 base and no December 2026 COLA
SSA's wage index series ends at 2024. Its automatic determinations page shows a dash for the 2026 COLA and the 2026 index. Its COLA series ends at 2.8% for December 2025. The 2026 figures were announced on October 24, 2025, in a release that said the taxable maximum would rise to $184,500 from $176,100 “based on the increase in average wages”. The corresponding 2027 release had not appeared.
SSA's wage index series ends at 2024. Its automatic determinations page shows a dash for the 2026 COLA and the 2026 index. Its COLA series ends at 2.8% for December 2025. The 2026 figures were announced on October 24, 2025, in a release that said the taxable maximum would rise to $184,500 from $176,100 “based on the increase in average wages”. The corresponding 2027 release had not appeared.
Fact
The last COLA input lands on October 14, 2026
The BLS schedule lists the September 2026 Consumer Price Index for Wednesday, October 14, 2026, at 8:30 AM Eastern. July and August 2026 CPI-W are already published (the August figure was 328.481, up 3.5% on the year). The COLA for December 2026 is the third-quarter 2026 CPI-W average against the third-quarter 2025 average of 317.265, and that COLA being above zero is the condition for the 2027 base to be recomputed at all.
The BLS schedule lists the September 2026 Consumer Price Index for Wednesday, October 14, 2026, at 8:30 AM Eastern. July and August 2026 CPI-W are already published (the August figure was 328.481, up 3.5% on the year). The COLA for December 2026 is the third-quarter 2026 CPI-W average against the third-quarter 2025 average of 317.265, and that COLA being above zero is the condition for the 2027 base to be recomputed at all.
Wealth Signal calculation
How the 2027 base would map from the 2025 index, for any growth rate
This is arithmetic, not a prediction. The 2027 base, if a COLA takes effect, is $60,600 × (2025 index ÷ 22,935.42), rounded to $300. Since the 2024 index gives $184,548.71 unrounded, each 1% rise in the 2025 index adds $1,845.49 before rounding. At 3% the product is $190,085, rounding to $190,200; at 4% it is $191,931, rounding to $192,000; at 5% it is $193,776, rounding to $193,800. The 2025 index itself is unknown until SSA publishes it, and no figure here should be read as that number.
This is arithmetic, not a prediction. The 2027 base, if a COLA takes effect, is $60,600 × (2025 index ÷ 22,935.42), rounded to $300. Since the 2024 index gives $184,548.71 unrounded, each 1% rise in the 2025 index adds $1,845.49 before rounding. At 3% the product is $190,085, rounding to $190,200; at 4% it is $191,931, rounding to $192,000; at 5% it is $193,776, rounding to $193,800. The 2025 index itself is unknown until SSA publishes it, and no figure here should be read as that number.
What it means for your money
For most households the cap is irrelevant: SSA's net compensation page puts the 2023 median at $43,222.81, roughly a quarter of the 2026 base. The arithmetic bites in three places.
- At or above the cap. The 2026 base is $8,400 higher than 2025's, a 4.77% increase. At 6.2% that is $520.80 more OASDI tax from the employee, and the same again from the employer, for a worker whose pay was above the cap in both years. The self-employed version is $1,041.60.
- Crossing the cap mid-year. Withholding stops on the paycheck in which cumulative earnings pass $184,500. Someone paid $250,000 evenly through 2026 stops paying OASDI tax once 73.8% of the year's pay has arrived ($184,500 ÷ $250,000), and their take-home pay rises by 6.2% of gross from that point. Medicare's 1.45% continues, with the additional 0.9% above $200,000 ($250,000 joint) that SSA's fact sheet notes is on top of the 7.65%.
- Benefits. Earnings above the base are not credited, so two workers earning $184,500 and $400,000 in 2026 bank the same year toward a benefit. The maximum benefit for a worker retiring at full retirement age in 2026 is $4,152 a month on SSA's fact sheet, and that ceiling exists because of the cap on what counts.
- Other indexed amounts. The same index drives the earnings needed for one quarter of coverage ($1,890 in 2026, up from $1,810) and the retirement earnings test exempt amounts ($24,480 under full retirement age in 2026). The 2026 retirement limits piece covers the IRS-indexed amounts, which use the CPI, not wages.
The 2.8% COLA and the 4.8% cap increase came from different indices for different years: prices in the third quarter of 2025 for one, wages across 2024 for the other. In a year when wages outrun prices the cap rises faster than benefits, and the reverse holds when prices outrun wages. The wage growth and nominal versus real entries explain why those two series part company.
This piece does not estimate the 2027 taxable maximum or the December 2026 COLA. The growth-rate table above is a mapping from hypothetical index values to the base the formula would produce, not a statement about what the 2025 index is. All figures are from SSA's Office of the Chief Actuary pages, SSA's October 24, 2025 release and 2026 fact sheet, section 230 of the Social Security Act as published on ssa.gov, and the BLS release schedule, as retrieved on October 12, 2026. Section 230(b)'s round-up rule for a product landing exactly on a multiple of $150 did not apply in any year shown.
Sources
- Contribution and Benefit BaseSocial Security Administration, Office of the Chief Actuary · Oct 12, 2026 · Primary source
- Contribution and Benefit Base DeterminationSocial Security Administration, Office of the Chief Actuary · Oct 12, 2026 · Primary source
- National Average Wage Index seriesSocial Security Administration, Office of the Chief Actuary · Oct 12, 2026 · Primary source
- Average Wage Index developmentSocial Security Administration, Office of the Chief Actuary · Oct 12, 2026 · Primary source
- National Average Wage IndexSocial Security Administration, Office of the Chief Actuary · Oct 12, 2026 · Primary source
- Measures of Central Tendency for Wage DataSocial Security Administration, Office of the Chief Actuary · Oct 12, 2026 · Primary source
- Cost-of-Living Adjustments seriesSocial Security Administration, Office of the Chief Actuary · Oct 12, 2026 · Primary source
- Latest Cost-of-Living AdjustmentSocial Security Administration, Office of the Chief Actuary · Oct 12, 2026 · Primary source
- Automatic DeterminationsSocial Security Administration, Office of the Chief Actuary · Oct 12, 2026 · Primary source
- Social Security Announces 2.8 Percent Benefit Increase for 2026 (press release, October 24, 2025)Social Security Administration · Oct 12, 2026 · Primary source
- 2026 Social Security Changes (COLA fact sheet)Social Security Administration · Oct 12, 2026 · Primary source
- Social Security Act, Section 230: Contribution and Benefit BaseSocial Security Administration (compilation of the Social Security Act) · Oct 12, 2026 · Primary source
- Release Calendar, October 2026US Bureau of Labor Statistics · Oct 12, 2026 · Primary source
- Consumer Price Index Summary — August 2026U.S. Bureau of Labor Statistics · Sep 11, 2026 · Primary source
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