2027 Social Security Wage Base — Projected
The taxable maximum is the ceiling on earnings subject to the 6.2% Social Security tax. It is not set by a committee and not tied to the COLA — 42 U.S.C. §430 computes it from a single wage index, and for 2027 exactly one input is still missing.
Why this number and the COLA move differently — and should. The Social Security COLA is indexed to consumer prices (CPI-W, 42 U.S.C. §415(i)); the wage base is indexed to wages (the national average wage index, §430(b)). They are announced on the same morning and they routinely disagree by several points: for 2026 the base rose 4.77% while the COLA was 2.8%. Meanwhile the tax brackets ride the chained C-CPI-U and IRMAA rides CPI-U over a different window again. Four 2027 figures, four indices. See also the projected 2027 COLA, which lands the same day as this one.
The statutory formula, quoted
The rule is section 230 of the Social Security Act, codified at 42 U.S.C. §430.
§430(a) — when it must be published:
"Whenever the Commissioner of Social Security pursuant to section 415(i) of this title increases benefits effective with the December following a cost-of-living computation quarter, the Commissioner shall also determine and publish in the Federal Register on or before November 1 of the calendar year in which such quarter occurs the contribution and benefit base determined under subsection (b) or (c)…"
§430(b) — how it is computed:
"the amount of such contribution and benefit base shall… be the amount of the contribution and benefit base in effect in the year in which the determination is made or, if larger, the product of — (1) $60,600, and (2) the ratio of (A) the national average wage index… for the calendar year before the calendar year in which the determination under subsection (a) is made to (B) the national average wage index… for 1992"
§430(c) — the rounding step:
rounded "to the next higher multiple of $300 where such product is a multiple of $150 but not of $300 and to the nearest multiple of $300 in any other case."
Written out, for the base that takes effect in year Y:
base(Y) = round₃₀₀( $60,600 × AWI(Y−2) ÷ $22,935.42 ), and never below base(Y−1).
Where each constant comes from. $60,600 is written into §430(b)(1) and is the base that was in effect for 1994. $22,935.42 is the national average wage index for 1992, the denominator the statute fixes. AWI(Y−2) is the moving part: for the 2027 base, the determination is made in 2026, so the numerator is the index for the calendar year before that — 2025.
The floor that has never yet bound. §430(b) takes the larger of the current base and the indexed product, so the taxable maximum can never fall — a year of declining average wages freezes it at the prior year's level instead. It is nowhere near binding for 2027: the indexed product exceeds the 2026 base under every rule below.STATUTORY
A check you can run yourself — ten out of ten
Before trusting a projection built on a formula, it is worth confirming the formula actually produces the announced answers. Below, the same three constants and the published wage index are run against every base SSA has set in the last decade. The rounded product matches the announced base in all ten years, to the dollar.
| Base year | Average wage index used | $60,600 × ratio | Rounded to $300 | Base SSA announced |
|---|---|---|---|---|
| 2017 | 2015: $48,098.63 | $127,086.27 | $127,200 | $127,200 |
| 2018 | 2016: $48,642.15 | $128,522.36 | $128,400 | $128,400 |
| 2019 | 2017: $50,321.89 | $132,960.57 | $132,900 | $132,900 |
| 2020 | 2018: $52,145.80 | $137,779.71 | $137,700 | $137,700 |
| 2021 | 2019: $54,099.99 | $142,943.07 | $142,800 | $142,800 |
| 2022 | 2020: $55,628.60 | $146,981.97 | $147,000 | $147,000 |
| 2023 | 2021: $60,575.07 | $160,051.54 | $160,200 | $160,200 |
| 2024 | 2022: $63,795.13 | $168,559.59 | $168,600 | $168,600 |
| 2025 | 2023: $66,621.80 | $176,028.22 | $176,100 | $176,100 |
| 2026 | 2024: $69,846.57 | $184,548.71 | $184,500 | $184,500 |
| 2027 | 2025: not published until October 2026 | — | — | projected below |
Every index value in the second column and every base in the last is transcribed from SSA's own annual "Cost-of-Living Increase and Other Determinations" notice in the Federal Register for that year. The third column is our arithmetic, and SSA prints the same product in its own notice text — the 2026 notice, for instance, states that the calculation "produces $184,548.71" before rounding to $184,500. Nothing here is a model. The only thing separating this page from a certainty is one unpublished index value.
One footnote on 2018. That year's base looks anomalous — up only 0.94% when its neighbours rose 3.5% or more. It is not an error in the table: SSA republished the 2018 determinations notice in December 2017 "with revisions to the average wage index and certain related dollar amounts," and $128,400 is the revised figure. The average wage index is itself revisable until the wage reports it is built from settle, which is a second, quieter reason a projection made in August should carry a band.
The one missing input, and when it arrives
- Oct 14, 2026The answer. BLS releases the September 2026 CPI, and SSA has historically announced the COLA, the new taxable maximum and the earnings-test amounts the same morning. The average wage index for 2025 — the only number this page is missing — is published with them.
- On or before Nov 1, 2026The statutory deadline. §430(a) requires publication of the base in the Federal Register by this date, whatever happens to the announcement schedule.
- Jan 1, 2027The new base takes effect for remuneration paid in 2027 and for self-employment income in tax years beginning in 2027. Payroll systems reset; anyone who had stopped paying the 6.2% late in 2026 starts again.
One caution on that October date. The 2026 announcement was scheduled for 15 October 2025 and actually came on 24 October 2025, because a government shutdown pushed the September 2025 CPI release back nine days. The base and the COLA travel together, so a delay to one delays both.
Projecting the 2025 wage index
The whole question reduces to one thing: how much did average wages grow in 2025? Note what that does not mean. Unlike a COLA projection made in August — which extrapolates months that have not happened — 2025 is a calendar year that is completely over. The wages exist. What has not happened is SSA's publication of its own measure of them. So the projection below is built from wage series that have reported 2025 in full, rather than from a forecast of the future.
Two BLS series covering all private employees give a measured, complete-year 2025 reading. Neither is the average wage index — SSA builds that from W-2 wage reports, which include deferred compensation and cover a different population — so we also carry rules that add the historical gap between the two, and rules that ignore BLS entirely and extrapolate the index's own recent growth. Seven rules, one published dataset each.
| Rule for 2025 wage growth | Growth | Implied 2025 index | Implied 2027 base |
|---|---|---|---|
| BLS average weekly earnings, 2025 actual (all private employees) | 3.724% | $72,447.66 | $191,400 |
| BLS average hourly earnings, 2025 actual (all private employees) | 3.951% | $72,606.21 | $191,700 |
| BLS weekly earnings + mean index-to-BLS gap, 7 years | 4.396% | $72,917.29 | $192,600 |
| BLS weekly earnings + mean index-to-BLS gap, 5 years | 4.455% | $72,957.89 | $192,900 |
| Average wage index, latest year held flat (2024, +4.840%) | 4.840% | $73,227.43 | $193,500 |
| Average wage index, 3-year mean growth (2022–24) | 4.862% | $73,242.76 | $193,500 |
| Average wage index, 5-year mean growth (2020–24) | 5.261% | $73,521.14 | $194,400 |
| Central case — mean of the seven growth rates, run through the statute | 4.498% | $72,988.57 | $192,900 |
What the "gap" rules are doing. Over the seven years 2018–2024 the average wage index grew faster than BLS average weekly earnings in six of them, by a mean of +0.67 percentage points (+0.73 over the last five). The index counts deferred compensation and covers the whole Social Security-covered workforce including high earners; the BLS payroll series does neither. Adding the historical gap to a measured 2025 BLS reading is the closest thing to a direct estimate available before October. The one year the gap went sharply negative was 2020, and the one year it went sharply positive was 2021 — the pandemic reshuffled who was employed, which is precisely the kind of composition effect the two series treat differently.
How coarse the rounding is. §430(c) rounds to $300, and at this level of wages one $300 step is worth about 0.163 percentage points of index growth. So the seven rules above — spanning 3.724% to 5.261% — collapse into just six distinct bases. Two rules land on $193,500 despite disagreeing about growth, because the statute cannot express the difference between them.
Central projection, band, and the Trustees' figure
Our central case is $192,900. We publish a band of $190,200 to $194,400, and each edge is chosen for a stated reason rather than picked for width:
- The ceiling, $194,400, is our fastest rule — five-year mean growth of the index itself, which is the assumption you reach if you ignore the 2025 BLS data entirely and let the post-2020 wage run continue.
- The floor, $190,200, is not one of our rules. It is the figure reported from the 2026 Social Security Trustees Report's intermediate assumptions, and it sits below every rule we ran. We anchor the bottom of the band on it deliberately: the Trustees are the one serious independent projection of this number, and a band that excluded them would be claiming a confidence we do not have.
The disagreement, stated plainly. The Trustees' $190,200 implies a 2025 average wage index of about $71,985, or growth of roughly 3.06%. That is below every measured 2025 wage series we could retrieve — BLS average weekly earnings came in at +3.72% and average hourly earnings at +3.95%, both for the completed year, and the index has historically grown faster than either. The most likely explanation is timing: the Trustees' economic assumptions are locked well before the report is issued, so a 2027 figure published in a June 2026 report can rest on an assumption about 2025 that was made while 2025 was still running. We have not adjusted our figures toward theirs, or theirs toward ours.
Which figures we verified at the source. We read the statute, and every average wage index value and every historical base, directly from primary documents — 42 U.S.C. §430 and SSA's own Federal Register notices. The $190,200 Trustees projection is the one figure we have not confirmed against the Trustees Report itself. It is carried here as a reported figure, from Bloomberg Tax's coverage of 10 June 2026, and labelled as a secondary source rather than presented as verified. Check the Trustees Report directly if that number is load-bearing for you.
What would move our central case. Only one thing: the 2025 average wage index. Because the rounding step is $300, our central case sits on a growth window of 4.444% to 4.607% — anything inside that produces $192,900 exactly, and every 0.163 points outside it moves the answer one $300 step. There is no partial credit and no gradual drift; the number is already determined and simply not published.
What it costs: the tax at each base
The base caps the OASDI portion of FICA: 6.2% from the employee, 6.2% from the employer, 12.4% for someone self-employed paying both halves. Everything below is that rate applied to the base, which is the most anyone can owe in Social Security tax for the year.
| Wage base | Employee, 6.2% | Employer, 6.2% | Self-employed, 12.4% | Combined per worker |
|---|---|---|---|---|
| $184,500 — 2026OFFICIAL | $11,439.00 | $11,439.00 | $22,878.00 | $22,878.00 |
| $190,200 — 2027, bottom of band | $11,792.40 | $11,792.40 | $23,584.80 | $23,584.80 |
| $192,900 — 2027, central | $11,959.80 | $11,959.80 | $23,919.60 | $23,919.60 |
| $194,400 — 2027, top of band | $12,052.80 | $12,052.80 | $24,105.60 | $24,105.60 |
At the central case, an employee earning above the base pays $520.80 more Social Security tax in 2027 than in 2026, and someone self-employed pays $1,041.60 more. The full width of the band is worth $260.40 to an employee and $520.80 to a sole trader — real money, but small enough that a plan does not need to wait for October to be built.
Two things the base does not cap. First, Medicare: the hospital insurance portion of FICA — 1.45% each side, 2.9% self-employed — applies to every dollar of covered earnings with no ceiling at all, and the Additional Medicare Tax of 0.9% applies above thresholds written into statute that have never been indexed. Second, benefits: the same base that caps your tax also caps the earnings that count toward your benefit, which is why a year above the base adds nothing further to your record. Claiming age does far more to your lifetime total than one more year at the maximum.
For the self-employed, one adjustment first. The 12.4% is applied to net earnings from self-employment after the 92.35% adjustment, and it is that adjusted figure that is measured against the base — so the maximum above is reached at gross self-employment profit somewhat higher than the base itself.
Ten years of actual wage bases
Every figure below is official and taken from the SSA determination notice for that year. This is the series the 2027 number joins.
| Year | Wage base | Change | % change | Max employee tax, 6.2% |
|---|---|---|---|---|
| 2017 | $127,200 | — | — | $7,886.40 |
| 2018 | $128,400 | +$1,200 | +0.94% | $7,960.80 |
| 2019 | $132,900 | +$4,500 | +3.50% | $8,239.80 |
| 2020 | $137,700 | +$4,800 | +3.61% | $8,537.40 |
| 2021 | $142,800 | +$5,100 | +3.70% | $8,853.60 |
| 2022 | $147,000 | +$4,200 | +2.94% | $9,114.00 |
| 2023 | $160,200 | +$13,200 | +8.98% | $9,932.40 |
| 2024 | $168,600 | +$8,400 | +5.24% | $10,453.20 |
| 2025 | $176,100 | +$7,500 | +4.45% | $10,918.20 |
| 2026 | $184,500 | +$8,400 | +4.77% | $11,439.00 |
| 2027 (central) | $192,900 | +$8,400 | +4.55% | $11,959.80 |
The 2023 spike is real and it is not inflation. The base jumped 8.98% for 2023 because it was indexed to the 2021 average wage index, which rose 8.89% — a composition effect from the pandemic labour market, where lower-paid employment fell furthest and the average of who remained rose sharply. The base is a wage measure, so it inherited that; the COLA, a price measure, did not. Anyone building a long-horizon plan on "the wage base grows about 4% a year" should keep 2023 in view as a reminder of how wide the tails are.
Common questions
- What is the Social Security wage base for 2027?
- Nobody knows yet — SSA has not announced it. Our central projection is $192,900, on a band of $190,200 to $194,400. The 2026 base is $184,500, which is official. The 2027 figure is determined by the national average wage index for 2025, a number SSA does not publish until October 2026, so every 2027 amount on this page is a projection rather than an announced figure.
- When is the 2027 Social Security wage base announced?
- 42 U.S.C. §430(a) requires the Commissioner to determine and publish the base in the Federal Register on or before 1 November of the year in which the cost-of-living computation quarter falls. In practice SSA announces it on the same morning as the COLA, when the September CPI report is released — scheduled for 14 October 2026. The 2026 announcement slipped to 24 October 2025 because a government shutdown delayed that CPI release, so treat the date as a strong expectation rather than a booked one.
- How is the Social Security taxable maximum calculated?
- Under 42 U.S.C. §430(b) the base is $60,600 — the 1994 base — multiplied by the ratio of the national average wage index for the year before the determination year to the index for 1992 ($22,935.42), rounded to the nearest multiple of $300, and never lower than the base already in effect. For the 2027 base, determined in 2026, the numerator is the average wage index for 2025. Applied to the published index series this formula reproduces every base from 2017 through 2026 exactly.
- How much Social Security tax will a high earner pay in 2027?
- At our central projection of $192,900, an employee earning at or above the base pays 6.2% of it, or $11,959.80, and the employer pays the same again. A self-employed person pays both halves — 12.4%, or $23,919.60. Against the 2026 base of $184,500 that is $520.80 more for an employee and $1,041.60 more for someone self-employed. The Medicare portion of FICA has no wage cap and is unaffected.
- Why does the wage base rise faster than the COLA?
- They are indexed to different things. The COLA tracks consumer prices through CPI-W under 42 U.S.C. §415(i); the wage base tracks wages through the national average wage index under §430(b). Wages have grown faster than prices in most recent years, which is why the base rose 4.77% for 2026 while the COLA was 2.8%. The two figures are announced on the same morning and routinely differ by a wide margin — that is the law working as written.
- Does the wage base also cap Medicare tax?
- No. The contribution and benefit base caps only the OASDI portion of FICA — the 6.2% employee and 6.2% employer shares, or 12.4% for the self-employed. The Medicare hospital insurance portion of 1.45% each way, 2.9% self-employed, applies to every dollar of covered earnings with no cap at all, and the Additional Medicare Tax of 0.9% applies above thresholds that are set in statute and are not indexed.
Next decision: The other number SSA announces that same morning — the projected 2027 COLA →
Still deciding when to claim? — compare claiming ages 62 through 70 →
Or run every wage year, tax year and surcharge year across your whole retirement — open the free tax-aware simulation →
The years after your last year above the wage base are usually the lowest-income years you will ever have — and the ones worth converting into. Sizing those conversions against the surcharge lines is the hard part. Model IRMAA-aware conversion sizing with the Roth Conversion Planner ($49) →
CES0500000011 and CES0500000003, total private, read from the BLS public data API on 2026-08-17 and averaged by us rather than copied from a secondary source.
PROJECTED outputs: the $192,900 central case, the $190,200–$194,400 band, the implied 2025 average wage index behind every rule, and every 2027 dollar figure derived from them. No 2027 figure on this page comes from SSA, because SSA has not published one.
REPORTED, NOT VERIFIED: the 2026 Social Security Trustees Report intermediate projection of $190,200 for the 2027 base — not confirmed against the Trustees Report or its tables. It is taken from Bloomberg Tax's report of 10 June 2026 and is used as an external data point, labelled as such, and never blended into our central case: the $192,900 central figure is the mean of our seven rules alone. It does, however, set the floor of the range quoted above — our own seven rules span $191,400 to $194,400, and we widen the floor to the reported Trustees figure rather than quote a range that excludes the one projection the actuaries have published.
Last reviewed: 2026-08-17. Next update on the SSA announcement, expected 14 October 2026, when this page's projection is replaced by the official figure.