Senior Payroll Tax Analyst

Iron Mountain is seeking a motivated and experienced North America Senior Payroll Tax Analyst to join our Global Payroll team.

• Compliance & Vendor Oversight:
  Oversee the timely and accurate filing of all federal, state, provincial, and local payroll tax returns—including Form 940, Form 941, Form W-2, and Canada Forms—by our outsourced payroll and settlement vendors.
• Account Reconciliation & Auditing:
  Perform regular plausibility audits and reconciliations of employee and employer payroll tax setups to identify and resolve discrepancies, while completing tax returns and requesting payments for Canada Workers' Compensation and other agency‑related taxes.
• Agency Liaison & Problem Resolution:
  Act as the primary point of contact for tax authorities to handle notices, audits, and new tax identification number registrations, while directly addressing executive escalations and stakeholder inquiries.
• System Optimization:
  Partner with internal teams and our tax preparer to thoroughly test and implement mandatory tax updates within our Workday payroll system.
• Reporting & Strategic Support:
  Prepare periodic trend reports regarding tax liabilities and potential financial impacts for senior management, while supporting corporate activities such as mergers and acquisitions.

• 7+ years of experience specifically in Payroll, Payroll tax, or high‑volume multi‑state and multi‑provincial payroll.
• Strong knowledge of enterprise payroll software (Workday), advanced proficiency in Google Suite (Google Sheets), and deep understanding of Circular E (Employer's Tax Guide) alongside multi‑state reciprocity rules.
• Bachelor’s degree in Accounting, Finance, Business Administration, or a related field.
• Exceptional written and verbal communication skills, with a proven ability to translate complex "forensic" payroll data and tax implications into clear, actionable insights for employees, executives, and management.
• Preferred
  
  Certifications:
  
  Certified Payroll Professional (CPP) or Fundamental Payroll Certification (FPC) designation.

• Competitive compensation:
  Salary and benefits package aligned with your level of expertise.
• Remote opportunity within the United States to support a healthy work‑life balance.
• Comprehensive health, wellness, and retirement plans, along with opportunities for continuous learning in a global organization.
• Generous PTO:
  Ample paid time off and holidays.

We are an equal opportunity employer. If you have a physical or mental disability that requires special accommodations, please let us know by sending an email to accommod See the Supplement to learn more about Equal Employment Opportunity.