In 2025, the maximum earnings subject to Social Security tax, known as the contribution and benefit base, is $176,100. Both employees and employers are required to contribute 6.2% of wages toward Social Security, resulting in a maximum tax of $10,918.20 each for the year. Self-employed individuals pay a combined rate of 12.4%, leading to a maximum contribution of $21,836.40.
![[OC] Social Security Tax at Various Incomes](https://www.byteseu.com/wp-content/uploads/2025/03/n3c6p92jf3se1-1536x1536.png "[OC] Social Security Tax at Various Incomes")
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In 2025, the maximum earnings subject to Social Security tax, known as the contribution and benefit base, is $176,100. Both employees and employers are required to contribute 6.2% of wages toward Social Security, resulting in a maximum tax of $10,918.20 each for the year. Self-employed individuals pay a combined rate of 12.4%, leading to a maximum contribution of $21,836.40.
Data source: [https://www.ssa.gov/oact/cola/cbb.html](https://www.ssa.gov/oact/cola/cbb.html)
Plotted via SVG device from R, annotated in Adobe Illustrator
So the highest tax is $10,918. The Maximum Benefit at Full Retirement Age (2025): $4,018 per month