What is Hypothetical Tax (Hypotax)?
The estimated tax an employee would pay if they remained in their home country, used as a baseline in tax equalization policies.
Definition
A hypothetical tax (commonly called 'hypotax') is the calculated tax amount an internationally assigned employee would have paid if they had remained in their home country with the same compensation structure. The employer withholds the hypotax amount from the employee's pay and then assumes responsibility for paying actual taxes in all relevant jurisdictions. The hypotax serves as the employee's 'tax contribution' under a tax equalization policy.
Who Needs to Know This?
Employees on international assignments under tax equalization policies who need to understand how their hypothetical tax is calculated and withheld.
Key Deadline
Calculated at the beginning of the assignment and reconciled annually
Potential Penalties
N/A - employer-calculated figure
Related Forms
Common Mistakes to Avoid
- 1Not reviewing the hypotax calculation for accuracy
- 2Not understanding what deductions are included in the hypothetical calculation
- 3Confusing hypotax withholding with actual tax liability
- 4Not reconciling hypotax at year-end
Related Terms
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