ST. CROIX INSIGHTS
Understanding the Additional Medicare Tax
Medicare is a federal health insurance program primarily for individuals aged 65 or older. Certain younger individuals may also qualify, such as those with specific disabilities, permanent kidney failure, or amyotrophic lateral sclerosis (ALS)—also known as Lou Gehrig’s disease. Medicare is funded through taxes paid by employees, employers, and self-employed individuals.
Under the Affordable Care Act, high-income earners contribute more to Medicare through the Additional Medicare Tax, an extra 0.9% tax applied to earnings exceeding specific thresholds based on tax-filing status:
- $250,000 for married couples filing jointly
- $125,000 for married individuals filing separately
- $200,000 for single filers and other taxpayers
Breakdown of FICA and Medicare Taxes
The Federal Insurance Contributions Act (FICA) tax consists of two parts:
- Social Security tax: 6.2% on wages up to an annual limit (e.g., $168,600 in 2024).
- Medicare tax: 1.45% on all wages, with no cap.
Employers match these contributions for each employee.
For example:
A salary of $200,000 in 2024 incurs $10,435 in Social Security tax (6.2% of $168,600) and $2,900 in Medicare tax (1.45% of $200,000), totaling $13,335 in FICA taxes. The employer also pays this amount.
Calculating the Additional Medicare Tax
The Additional Medicare Tax applies only to wages exceeding the threshold. Regular FICA taxes are paid on all wages before the additional tax kicks in.
Here’s a breakdown of the example for the Additional Medicare Tax calculation:
A single filer earns $300,000 in wages in 2024.
Step 1: Calculate Regular FICA Taxes
- Social Security Tax (6.2% on wages up to $168,600):
Social Security Tax = 0.062 x 168,600 = 10,435 - Medicare Tax (1.45% on all wages):
Medicare Tax = 0.0145 x 300,000 = 4,350
Total Regular FICA Tax = Social Security Tax + Medicare Tax
Total Regular FICA Tax = 10,435 + 4,350 = 14,785
Step 2: Determine Wages Subject to the Additional Medicare Tax
- The threshold for a single filer is $200,000.
- Earnings above this threshold: Excess Wages = 300,000 − 200,000 = 100,000
Step 3: Calculate the Additional Medicare Tax (0.9% on Excess Wages)
Additional Medicare Tax = 0.009 × 100,000 = 900
Step 4: Total Medicare Taxes
Regular Medicare Tax: $4,350
Additional Medicare Tax: $900
Total Medicare Tax = 4,350 + 900 = 5,250
Final Summary:
Social Security Tax: $10,435
Medicare Tax (Regular + Additional): $5,250
Total FICA Tax = 10,435 + 5,250 = 15,685
The employer also pays the same $14,785 in regular FICA taxes but does not pay the Additional Medicare Tax.
Rules for Self-Employed Individuals
Self-employed individuals pay a self-employment tax equivalent to both the employee’s and employer’s share of FICA taxes. While this doubles the rate, they can deduct half of the self-employment tax paid. The 0.9% Additional Medicare Tax applies to self-employment income above the same thresholds as for employees.
Key Considerations
- Thresholds Aren’t Indexed for Inflation: The income levels for the 0.9% tax remain fixed, meaning rising incomes over time may result in more taxpayers being subject to this additional tax.
- Employer Responsibilities: Employers don’t pay the Additional Medicare Tax themselves but must withhold it once an employee’s earnings exceed the threshold.
Understanding the Additional Medicare Tax is crucial for high-income earners and self-employed individuals. This tax ensures that those with higher earnings contribute more to Medicare, but it also adds an extra financial burden that can grow over time due to fixed thresholds not keeping pace with inflation. By familiarizing yourself with how these taxes are calculated and the applicable thresholds, you can better plan for your financial obligations, avoid surprises, and potentially mitigate the impact through effective tax planning.
In today’s complex financial world, it pays to work with a qualified Certified Public Accountant (CPA) and Certified Financial Advisor in helping you reach your financial goals. Tax planning is one piece of the financial puzzle that can’t be overlooked.
Medicare is a federal health insurance program primarily for individuals aged 65 or older. Certain younger individuals may also qualify, such as those with specific disabilities, permanent kidney failure, or amyotrophic lateral sclerosis (ALS)—also known as Lou Gehrig’s disease. Medicare is funded through taxes paid by employees, employers, and self-employed individuals.
Under the Affordable Care Act, high-income earners contribute more to Medicare through the Additional Medicare Tax, an extra 0.9% tax applied to earnings exceeding specific thresholds based on tax-filing status:
- $250,000 for married couples filing jointly
- $125,000 for married individuals filing separately
- $200,000 for single filers and other taxpayers
Breakdown of FICA and Medicare Taxes
The Federal Insurance Contributions Act (FICA) tax consists of two parts:
- Social Security tax: 6.2% on wages up to an annual limit (e.g., $168,600 in 2024).
- Medicare tax: 1.45% on all wages, with no cap.
Employers match these contributions for each employee.
For example:
A salary of $200,000 in 2024 incurs $10,435 in Social Security tax (6.2% of $168,600) and $2,900 in Medicare tax (1.45% of $200,000), totaling $13,335 in FICA taxes. The employer also pays this amount.
Calculating the Additional Medicare Tax
The Additional Medicare Tax applies only to wages exceeding the threshold. Regular FICA taxes are paid on all wages before the additional tax kicks in.
Here’s a breakdown of the example for the Additional Medicare Tax calculation:
A single filer earns $300,000 in wages in 2024.
Step 1: Calculate Regular FICA Taxes
- Social Security Tax (6.2% on wages up to $168,600):
Social Security Tax = 0.062 x 168,600 = 10,435 - Medicare Tax (1.45% on all wages):
Medicare Tax = 0.0145 x 300,000 = 4,350
Total Regular FICA Tax = Social Security Tax + Medicare Tax
Total Regular FICA Tax = 10,435 + 4,350 = 14,785
Step 2: Determine Wages Subject to the Additional Medicare Tax
- The threshold for a single filer is $200,000.
- Earnings above this threshold: Excess Wages = 300,000 − 200,000 = 100,000
Step 3: Calculate the Additional Medicare Tax (0.9% on Excess Wages)
Additional Medicare Tax = 0.009 × 100,000 = 900
Step 4: Total Medicare Taxes
Regular Medicare Tax: $4,350
Additional Medicare Tax: $900
Total Medicare Tax = 4,350 + 900 = 5,250
Final Summary:
Social Security Tax: $10,435
Medicare Tax (Regular + Additional): $5,250
Total FICA Tax = 10,435 + 5,250 = 15,685
The employer also pays the same $14,785 in regular FICA taxes but does not pay the Additional Medicare Tax.
Rules for Self-Employed Individuals
Self-employed individuals pay a self-employment tax equivalent to both the employee’s and employer’s share of FICA taxes. While this doubles the rate, they can deduct half of the self-employment tax paid. The 0.9% Additional Medicare Tax applies to self-employment income above the same thresholds as for employees.
Key Considerations
- Thresholds Aren’t Indexed for Inflation: The income levels for the 0.9% tax remain fixed, meaning rising incomes over time may result in more taxpayers being subject to this additional tax.
- Employer Responsibilities: Employers don’t pay the Additional Medicare Tax themselves but must withhold it once an employee’s earnings exceed the threshold.
Understanding the Additional Medicare Tax is crucial for high-income earners and self-employed individuals. This tax ensures that those with higher earnings contribute more to Medicare, but it also adds an extra financial burden that can grow over time due to fixed thresholds not keeping pace with inflation. By familiarizing yourself with how these taxes are calculated and the applicable thresholds, you can better plan for your financial obligations, avoid surprises, and potentially mitigate the impact through effective tax planning.
In today’s complex financial world, it pays to work with a qualified Certified Public Accountant (CPA) and Certified Financial Advisor in helping you reach your financial goals. Tax planning is one piece of the financial puzzle that can’t be overlooked.