What is ADSTX on a paycheck stub mean?

ADSTX on a paycheck stub typically stands for "Additional Tax." It indicates an extra withholding amount deducted from your paycheck for tax purposes, which may occur due to various reasons, such as changes in your tax situation or adjustments made by your employer. This deduction helps ensure that you meet your tax obligations and can prevent owing a large sum during tax season. Always consult your payroll department for specific details regarding your deductions.