After working with Aiwyn, Windham Brannon saw:


Increase in overall collections, year over year
Percent of clients paying for more than 1 invoice


Number of invoices paid within 7 days vs prior months


Amount ($) of online payments collected year over year


Number of online payments collected vs prior months


Percent of late invoices paid after receiving just 1 payment reminder
Aiwyn Success Story Karen Crittenden@2x

Karen Crittenden, Director of Finance & Administration

“Since taking a deeper dive into our billing processes with Aiwyn, we’ve been able to refine our client experience and alleviate our staff from cumbersome billing tasks.”


Windham Brannon is a recognized leader in providing audit, tax and advisory services for businesses and high net-worth individuals. Since 1957 the accounting services firm has demonstrated its proven ability to adapt to change, learn from the past and keep its eyes on the future.


In 2019, Windham Brannon was going through some internal changes and brought on a new Director of Finance and Administration to help manage the firm's financial operations. At the time, they were using a legacy, siloed payments provider. “Our old processor never integrated for reconciliation with Practice Engine, was overly complicated and difficult for our clients to use,” said Karen Crittenden at Windham Brannon. “The online client payment experience was lacking which led to our back office staff spending too much of their workday trying to do the most basic of tasks.” Windham Brannon needed a better billing system to coordinate online payments, outstanding AR, and manage cashflow.


Since Windham Brannon implemented Aiwyn, their clients' payment experience has been a breeze. Furthermore, implementing an intelligent billing system has helped their business generate thousands of dollars in extra revenue yearly.

About Windham Brannon

  • Founded in 1957.
  • Named to Accounting Today's Best Firm to Work For (5x).
  • Inside Public Accounting Top 250 firm in 2020.
  • Aiwyn customer since 2020.
  • Integrations: Practice Engine