How often is the Social Security tax rate established?

The Social Security tax rate is established annually by the Federal Insurance Contributions Act (FICA). The Social Security Administration assesses economic conditions, budget considerations, and program requirements to determine the suitable tax rate for each year, which can lead to adjustments in the payroll tax rates. This annual determination helps ensure that the program remains adequately funded to provide retirement, disability, and survivor benefits to eligible individuals.

The other options suggest either less frequent adjustments or a one-time setting, which do not align with the regular practice of reviewing and updating the tax rates annually. Therefore, establishing the rate every year reflects the dynamic nature of economic factors influencing the Social Security program and the revenue needed to sustain it.