Accounts Payable Services & AP Automation Providers in Windham, ME

Milliken, Perkins & Brunelle is a full-service certified public accounting firm in Maine. Its main office is in Windham and a second office is in Rangeley. The practice traces its roots to 1975. It works with individuals, families and small to mid-sized businesses across Cumberland, York and Franklin counties, including communities such as Portland, Gray, Standish, Raymond, Bridgton and Rangeley.

It also takes on clients outside that area. Buyers looking for help with payables will find the firm's back-office support grouped under bookkeeping and payroll. The website does not describe a separate accounts payable or AP automation product.

Services relevant to finance operations

For companies that want to outsource routine accounting, the firm offers ongoing bookkeeping. It aims to give owners reliable, on-time reports for a closer look at how the business is doing. Staff are proficient in QuickBooks and also know other accounting packages, so they can help clients choose software that suits them. The main service areas are:

• Bookkeeping and payroll processing
• Financial statement compilations and reviews
• Business consulting, including entity selection and growth planning
• Help with buying and selling businesses
• Corporate, partnership, individual, estate and fiduciary tax returns
• Year-round tax consulting and long-range tax planning

Companies that need a dedicated payables workflow, such as invoice capture, approval routing or automated vendor payments, should ask the firm how its bookkeeping engagements handle bills and vendor payments. The site does not detail these functions or name any AP software.

How the firm works with clients

The practice stresses education and regular communication. It says it contacts each client several times a year instead of only at filing time. The team keeps up with new tax rules and current accounting programs through continuing education. It uses that knowledge to plan taxes several years ahead rather than one year at a time. Clients exchange documents through a secure online client portal. Both offices are open on weekday business hours.

Team and credentials

The staff includes CPAs, enrolled agents, staff accountants, bookkeepers and an accounting assistant. The firm says its bookkeeping staff have more than fifty years of combined experience. It belongs to the Maine Association of Professional Accountants and the American Institute of Certified Public Accountants. Kevin Brunelle, CPA, focuses on business consulting and tax planning for small Maine companies and entrepreneurs.

Sharon Perkins, CPA, is the daughter of founder Elwood Milliken and focuses on bookkeeping and individual returns. Aaron Perkins, CPA, holds a master's degree in taxation, teaches graduate accounting as an adjunct at St. Joseph's College of Maine, and was listed among Forbes' 2025 best-in-state CPAs.

Several team members, including Nate Hicks and Kristi Carr, handle day-to-day bookkeeping and payroll work. The Rangeley office is led by Richard Walker, CPA, who founded his own practice there in 1986 and has served small businesses and nonprofits in Franklin County.

The firm may suit small Maine businesses that want a local, relationship-based accounting partner covering bookkeeping, payroll, financial statements and tax under one roof. It is less suited to buyers who want a standalone AP automation platform.