How it works
Employee Social Security = 6.2% × min(wages, $184,500). Medicare = 1.45% of all wages. Additional Medicare employer withholding = 0.9% of wages above $200,000.
Input definitions
- Full-year wages from ONE employer (USD)
- Enter the value in the labeled unit.
- Calendar year
- Choose 2026.
A worked example
- Full-year wages from ONE employer (USD)
- 100000
- Calendar year
- 2026
Assumptions & limits
Employee, one employer, identical Social Security and Medicare wage bases, no exempt wages. Not self-employment tax or federal income tax. Multiple employers and filing-status reconciliation may change final liability; no employer Additional Medicare match.
Sources & review
Maintained by AnsRio. Methods and examples use automated checks; this does not imply independent professional certification.
Method updated 2026-10-17. Content checked against the stated method and examples. Our verification approach.
Common questions
Can I check the result before using it?
Compare the worked example with your inputs and use the stated method: Employee Social Security = 6.2% × min(wages, $184,500). Medicare = 1.45% of all wages. Additional Medicare employer withholding = 0.9% of wages above $200,000.. Confirm input units and boundary choices before relying on the result.
How does the US Social Security and Medicare withholding tool work?
Employee Social Security = 6.2% × min(wages, $184,500). Medicare = 1.45% of all wages. Additional Medicare employer withholding = 0.9% of wages above $200,000.
What are the assumptions and limits of US Social Security and Medicare withholding?
Employee, one employer, identical Social Security and Medicare wage bases, no exempt wages. Not self-employment tax or federal income tax. Multiple employers and filing-status reconciliation may change final liability; no employer Additional Medicare match.