Administrative Assistant (Public Companies) Job Category : Administration
Requisition Number : ADMIN018202
Posted : August 10, 2026
Full time
On-site
Locations Showing 1 location
Inspirational, innovative and entrepreneurial - this is how we describe our empowered teams. Combine your passion with purpose and join a culture that is thriving in the face of change.
Make an impact with our Administration team as an Administrative Assistant. This diverse team of professionals directly contributes to the success of the firm by supporting internal and external clients. As a trusted advisor, you’ll ensure the efficient and effective operation of our business.
MNP is proudly Canadian. Providing business strategies and solutions, we are a leading national accounting, tax and business advisory firm in Canada. Entrepreneurial to our core, our talented team members transcend obstacles into opportunities and are successfully transforming mid-market business practices.
Responsibilities Maintain partner calendars – Organize, schedule, and confirm appointments
Maintain partner contacts
Submit and reconcile expense reports
Act as a point of contact for internal and external clients
Aid in the invoicing process for assigned partners, including monitoring WIPs, expenses to be charged, drafting invoices, finalizing and issuing invoices to clients as per billing deadlines/schedules
Issuing of invoices on a timely basis to assist with monthly billing targets
Review, sort, draft, proof and finalize clients deliverables and process e-returns
Prepare, review and modify general templates, letters and reports




Maintain and update spreadsheets for tracking of client deliverables
Assist in the creation and assembly of presentations
Conduct quality review (accuracy, completeness, appearance) of outgoing correspondence Track upcoming client year ends and monitor deadlines
Fax, photocopy and scan documents, as required
Skills and Experience Completion of related post-secondary education in administration is an asset
Two (2) to four (4) years of related administrative/clerical experience
Strong computer literacy including effective working skills of Microsoft Word and Excel
Previous experience with Caseware, Caseview, and Taxcycle is considered an asset
MyRewards@MNP With a focus on high-potential earnings, MNP is proud to offer customized rewards that support our unique culture and a balanced lifestyle to thrive at work and outside of the office. You will be rewarded with generous base pay, vacation time, 4 paid personal days, a group pension plan with 4% matching, voluntary savings products, bonus programs, flexible benefits, mental health resources, exclusive access to perks and discounts, professional development assistance, MNP University, a flexible ‘Dress For Your Day’ environment, firm sponsored social events and more!
The annual salary range for this role is: $45,000 - $75,000.
Diversity@MNP We embrace diversity as a core value and celebrate our differences. We believe each team member contributes unique gifts and amplifying their potential makes our business stronger. We encourage people with disabilities to apply!

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📌 Administrative Assistant (Public Companies) (Ontario)
🏢 MNP
📍 Ontario