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Annual Social Security and Medicare Contributions

Estimate selected-year employee or self-employed contributions and an illustrative employer split.

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Calculator inputs

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How to use this calculator

  1. Enter the known values in the units shown. Results update as you type.
  2. Where results are editable, change one to solve backwards. Lock a value to hold it fixed.
  3. Use the worked example to check the method. Reset restores the starting fields.

Use the result with context

Results are estimates for planning and education. Confirm rates, taxes, fees, and legal requirements with the relevant institution or a qualified professional before making a financial decision.

Formula and method

An employee with 100,000 taxable wages in 2026 contributes 6,200 Social Security plus 1,450 Medicare, totaling 7,650 before any other taxes.

Social Security = min(taxable earnings,year cap)×6.2% employee or 12.4% self-employed; Medicare = earnings×1.45% or 2.9%; additional Medicare = 0.9% above filing-status threshold.

Worked example

Enter these known values and leave the other values blank.

Annual taxable earnings
100000
Tax year
2026
Employment type
Employee/Employer
Filing status
Single
Social security
6200
Medicare
1450
Medicare additional
0
Fica tax
7650
Fica dif
7650
null_val
0

Assumptions and limitations

  • Select the tax year explicitly: 2022 through 2026. Social Security caps are 147,000; 160,200; 168,600; 176,100; and 184,500. Medicare has no earnings cap.
  • Enter taxable wages for employment or taxable net self-employment earnings after the applicable 92.35% adjustment. The model does not calculate that adjustment, deductions, mixed wage/self-employment coordination, multiple employers or joint-spouse earnings.
  • Additional Medicare represents annual liability using the selected filing threshold: 250,000 jointly, 125,000 separately, 200,000 otherwise. Payroll withholding uses 200,000 regardless of filing status, so the table is not a paycheck withholding prediction. Employers do not match additional Medicare.
  • Clear an editable unknown before solving an inverse. Selection controls and forced outputs cannot be inferred.

Common questions

What does this model assume?

Select the tax year explicitly: 2022 through 2026. Social Security caps are 147,000; 160,200; 168,600; 176,100; and 184,500. Medicare has no earnings cap.

What does the result exclude?

Enter taxable wages for employment or taxable net self-employment earnings after the applicable 92.35% adjustment. The model does not calculate that adjustment, deductions, mixed wage/self-employment coordination, multiple employers or joint-spouse earnings.

References

The calculation follows this reviewed mathematical model: Social Security = min(taxable earnings,year cap)×6.2% employee or 12.4% self-employed; Medicare = earnings×1.45% or 2.9%; additional Medicare = 0.9% above filing-status threshold. Required model inputs: Taxable earnings must be positive.

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