Office Assistant​/File Clerk Tax Office

Office Assistant / File Clerk for Tax Office

Full-Time | In-Office | Administrative Support (Office Assistant / File Clerk for Tax Office)

Date posted: January 6, 2026

Pay: $35,000.00 – $50,000.00 per year (DOE)

Compensation is competitive and commensurate with experience. Candidates with strong administrative, document management, or professional office experience may qualify for a higher starting salary within the posted range.

Work Location:

Lake Oswego, OR (In-Office – local candidates only)

Job Summary

Maginnis & Carey LLP is seeking a detail-oriented and organized Administrative Office Assistant / File Clerk to join our CPA firm. This role is essential in maintaining efficient office operations, managing client files, and providing exceptional customer service. The ideal candidate will possess strong clerical skills, proficiency in office management software, and the ability to handle multiple tasks with professionalism and accuracy.

This position offers an opportunity to work in a professional environment where attention to detail and organizational skills are highly valued.

Duties

• Provide administrative support and general office assistance
• Scan, organize, and maintain physical and electronic client files
• Assemble tax returns, tax organizers, and financial statements
• Perform accurate data entry and word processing
• Prepare and distribute internal administrative reports
• Support daily office operations and workflow efficiency
• Back up front desk and receptionist duties, including greeting clients and managing multi-line phone systems
• Answer, route, and document incoming calls with professional phone etiquette
• Perform general clerical tasks such as copying, scanning, mailing, and filing
• Assist with special projects and ad hoc administrative assignments
• Maintain electronic records using Microsoft Office applications

Required Qualifications & Skills

• 1+ year of administrative, clerical, or office assistant experience
• Experience in a professional office environment (tax, accounting, legal, or financial services)
• Proficiency with Microsoft Office (Outlook, Word, Excel)
• Strong organizational skills with the ability to prioritize tasks effectively
• Excellent data entry accuracy and attention to detail
• Strong document management, proofing, and administrative support skills
• Excellent multitasking and time-management abilities
• Professional written and verbal communication skills
• Customer service–oriented with a polished, professional demeanor
• Ability to work independently and collaboratively in a team environment
• Knowledge of office management procedures and basic calendar management
• Comfortable using standard office equipment (scanners, copiers, multi-line phones)
• Resourceful, proactive, and dependable

Preferred Skills

• Experience with front desk operations, multi-line phone systems, and customer service
• Experience handling confidential and sensitive documents
• Familiarity with tax or accounting office workflows
• Experience with large document preparation, assembly, and formatting
• Prior experience in a CPA or accounting firm
• Health, Vision, Dental and Life Insurance
• 401(k) & Employer Match
• FSA (Flexible Spending Account)
• 136 Hours of PTO, Annually
• 8 Paid Holidays

Education:

• High school or equivalent (Required)

Experience:

• Office: 1 year (Required)
• Microsoft Excel: 1 year (Required)
• Microsoft Outlook: 1 year (Required)

Ability to Commute:

• Entry level

• Full-time

• Administrative
• Accounting

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