Foreign nationals employed within the United States are subject to US federal tax rules, but those rules don’t apply uniformly across all tax types. While income tax obligations often depend on tax residency, payroll taxes, specifically Social Security and Medicare taxes, follow a different set of rules. Employees working in the US on an F-1 or J-1 visa may qualify for a temporary exemption from FICA tax withholding, depending on their visa status, tax residency, and the nature of their work.
Federal Insurance Contributions Act (FICA) taxes are mandatory federal payroll taxes that fund US Social Security and Medicare. In general, wages paid for services performed in the United States are subject to FICA tax withholding, unless a specific exemption applies.
It’s the employer’s responsibility to determine whether an employee qualifies for a FICA exemption and to withhold and remit payroll taxes accordingly. If an IRS employment tax audit finds that FICA taxes should have been withheld but were not, the employer may be liable for both the employee’s and employer’s share of the tax, along with penalties and interest for the open tax years.
These rules make it critical for employers to understand when FICA tax withholding applies, when an exemption may be available, and what documentation is required to support that decision.
The eligibility criteria for FICA tax exemption are as follows:
Employers must confirm that the employee meets the requirements for the exemption and should maintain documentation supporting the employee’s visa status and eligibility.
Qualification for exemption depends on several factors, including how long the employee has been in the US, what type of visa they currently hold, and whether they’re a student.
Foreign students on an F-1 or J-1 visa who are considered nonresident aliens for US tax purposes are generally exempt from FICA taxes while they remain nonresident aliens for US tax purposes. In most cases, this applies during the first five calendar years they’re present in the US. This exemption applies only while the individual remains a nonresident alien and performs services that are authorized and consistent with the purpose of the visa.
The five-year exemption period generally considers prior years in which the student had exempt-individual status. Employers should review an employee's complete US immigration history because prior F-1, J-1, M-1, or Q status may affect the calculation.
When counting the five calendar years, any day in the calendar year counts toward the test. For example, if the date of US entry is Dec. 31, 2023, the exemption may apply from 2023 through 2027. In this example, assuming the individual remains a nonresident alien, FICA taxes will be required to be withheld from the employee through payroll starting on Jan. 1, 2028.
Meanwhile, nonstudents on a J-1 visa (such as teachers, researchers, scholars, and trainees) are generally treated as exempt individuals for Substantial Presence Test purposes during their first two calendar years in the US. After that period, eligibility for exempt-individual treatment is subject to look-back rules. In general, an individual will not qualify as an exempt individual if they were exempt as a teacher, trainee, or student during any part of two of the six preceding calendar years. Limited exceptions may apply in certain circumstances, including situations involving compensation paid entirely by a foreign employer.
When counting the two calendar years, any day in the calendar year will count toward the test. For example, if the date of entry is Dec. 31, 2023, the exemption may apply for 2023 and 2024. In this example, FICA withholding would generally be required starting Jan. 1, 2025, unless another exemption applies.
FICA exemption eligibility is not permanent and should be evaluated on an ongoing basis. To determine whether an employee continues to qualify for the exemption, employers should monitor factors such as:
Because eligibility can change over time, employers should establish processes to periodically review the status of employees who are claiming a FICA exemption.
A key requirement for the exemption is that the individual remains a nonresident alien for US tax purposes. Once an employee becomes a resident alien, such as obtaining a green card or meeting the Substantial Presence Test, the F-1/J-1 nonresident alien FICA exemption generally no longer applies. Employers should therefore monitor both immigration status and tax residency status when evaluating payroll withholding obligations.
Employees may also have separate US tax filing obligations, including Form 8843 and, when required, Form 1040-NR. While these filings do not, in and of themselves, determine FICA exemption eligibility, they may support the employee's overall US tax compliance and nonresident alien status determination.
First and foremost, employers should understand that visa status and tax residency are distinctly different concepts. While US Citizenship and Immigration Services grants an individual’s visa (or immigration) status and determines their right to stay in the country, tax residency specifies how the IRS taxes that individual, regardless of what visa they possess.
One common pitfall is that employers will often just look at an employee’s visa type and apply an exemption from FICA taxes based on that visa type without confirming if the employee qualifies for the withholding exemption.
Another mistake that employers commonly make is using the hire date as the effective date for the calendar count toward FICA exemption. Many also don’t check if an employee has been in the US on a prior visa or the lengths of the prior or current stay.
Take this example: A company hires a student on an F-1 visa, and the company’s records show a visa was issued during the year of hire. With no process in place to capture the student's effective date, the company's focus was whether the employee had a valid visa for employment purposes. However, the employee had been in the US for more than five calendar years, became a resident alien for US tax purposes by meeting the Substantial Presence Test, and, therefore, was liable for FICA taxes.
Depending on the employee's wages and the length of the error, the employer may need to file multiple payroll amendments, issue Forms W-2C, and remit both employee and employer FICA taxes, along with any applicable interest and penalties. Additionally, the employee may need to amend previously filed tax returns if they incorrectly reported themselves as a nonresident alien for US tax purposes.
Incorrect tax withholding carries with it several possible financial and administrative consequences.
One of the most significant hidden costs if there is an error in FICA tax withholding exemption is payroll amendments for the affected time frame, whether that’s a single quarter or several years.
For employers that should have withheld FICA taxes and didn’t, payroll teams will have to remit those taxes, submitting quarterly filings and revising previous submissions as necessary.
As another example, a company hires an employee who is in the US under an F-1 visa. The employee was later approved for an H-1B visa, but HR didn’t notify the payroll team of the change in immigration status, and the employee’s FICA taxes continued to be exempt from withholding in the system.
As a result, FICA wages weren’t reported, and neither the employee’s nor the employer’s taxes were remitted.
Depending on how long the error remained uncorrected, the employer may need to issue one or more Forms W-2C and remit both employee and employer FICA taxes.
The company may need to remit previously uncollected FICA taxes and determine how the employee portion will be handled.
If the employee pays, it’s a large payment that they couldn’t have expected or budgeted for; if the employer pays on the employee’s behalf, it’s considered income to the employee and subject to additional taxes.
Other hidden costs include:
Organizations frequently focus on immigration compliance during onboarding but overlook payroll implications. A coordinated process involving HR, immigration, payroll, and mobility stakeholders can significantly reduce withholding risk while improving the employee experience.
As a starting point, employers of nonresident aliens need to educate HR, onboarding, and payroll teams on what they should know about FICA exemptions.
Payroll teams should work closely with HR to develop a process for collecting and verifying information from nonresident alien employees. During onboarding, employers should gather enough information to allow payroll or tax advisors to evaluate exemption eligibility. This may include an intake form or questionnaire completed upon hire and maintained with the employee’s payroll documentation. The process should also track time limits on exemptions and any changes to immigration status.
Mobility tax advisors can help train payroll and HR teams on the importance of gathering information from the employees before applying any FICA tax exemptions. Mobility tax service firms can also help companies design processes that reduce the risk of incorrect withholding.
As part of the process, an advisor may review HR and payroll files to identify possible withholding issues and conduct periodic reviews of payroll records for employees who are working in the US under employment visas.
Ultimately, it’s up to the employer to understand and maintain proper tax withholding of a nonresident employee’s FICA taxes. While the employee must retain the necessary immigration status and supporting documentation, the employer is responsible for payroll wage reporting and tax withholding compliance.
Having the right policies and processes in place to support foreign national employees helps organizations stay compliant with payroll tax rules and reduce risk for both the employer and employee. If your organization employs individuals working in the US under F-1 or J-1 visa status, it may be helpful to review how your payroll processes identify and monitor FICA tax exemption eligibility. If you’d like to discuss your current approach or explore ways to strengthen your processes, you can schedule a call with the GTN team to continue the conversation.