Social Security Wage Base History, 1975–2027

The complete table, 1975–2027

Source: SSA, "Contribution and Benefit Base" (ssa.gov/oact/cola/cbb.html), transcribed in full. For historical depth: when the tax began in 1937 the base was $3,000, where it stayed until 1950.

The cap at a glance

Highlighted bars: the no-increase years (2010, 2011, 2016) and the current figure for 2027. The flat stretches are the story — see below.

What the wage base is — and why it freezes

Wages up to the base are taxed at 12.4% for Social Security (6.2% from the employee, 6.2% from the employer; the self-employed pay both). Earnings above the base are exempt from that tax (the separate 1.45% Medicare tax is uncapped). The same base caps the earnings that count toward your benefit computation, which is why it is formally the "contribution and benefit base."

The base is indexed to growth in the national average wage index, using wage data with a two-year lag, and rounded to the nearest $300. One statutory quirk produces the flat years: the base cannot increase for a year after a year with no payable COLA. When the COLA determinations of 2009 and 2010 came in at 0.0%, the base locked at $106,800 for three years; the 0.0% determination of 2015 locked it at $118,500 for a second year. In other words, the same price stagnation that froze retirees' checks also froze the tax cap — a fact that figures in every debate about "scrapping the cap" to shore up the trust funds.

Who feels the cap move? Only about 6% of covered workers earn above it in a given year — executives, dual-professional households combining at the individual level, high-earning specialists — plus the self-employed above the line. For everyone else, the 2027 figure of $192,300 changes nothing; for those above it, the 2027 increase of $7,800 adds about $967 a year in combined employee-employer Social Security tax at the margin.