California’s levy on independent contractors, mirroring federal requirements, funds Social Security and Medicare. This combined rate, equivalent to the employee and employer portions of these taxes, applies to net earnings from self-employment. For example, if a freelancer earns $50,000 in net profit, the applicable levies would be calculated on that amount.
Understanding these obligations is crucial for accurate financial planning and tax compliance. Precise calculation and timely payment prevent penalties and contribute to future Social Security and Medicare benefits. This system, established decades ago, provides a safety net for individuals who work for themselves, ensuring access to vital social programs.