Cokala was founded in 2007 by Marianne Couch, Mary Kallewaard and Jerri LS Langer.  
Since that time, the Cokala tax group has continuously provided services for a growing
number of organizations.  

Jerri LS Langer, Esq.
Jerri is a nationally recognized tax information reporting and withholding consultant who
provides a wide range of tax advisory services to Fortune 500 companies.  She has twice
been appointed to the IRS Commissioner’s Information Reporting Program Advisory
Committee (IRPAC), serving from 2010-2012 and 1999-2000.  She formerly served as chief
tax compliance officer of ProBusiness Services Inc, a Fortune 500 payroll service company,
where she orchestrated a new merger & acquisition service and managed tax controversy
and government relations areas; and as a Director in Balance Consulting, heading special
consulting services; and as a Director in Deloitte & Touche, where she gained a national
reputation assisting clients in complying with domestic and international payroll tax as well
as nonwage tax reporting and withholding requirements.  Earlier as a tax advisor on Wall
Street, she gained significant operational experience in brokerage, banking and insurance
operations and product development, as well as in retirement plan and employee benefits

Marianne Couch, Esq.
Marianne  is a nationally known advisor and author on U.S. federal and state tax information
reporting compliance, and a frequent lecturer at major tax conferences.  She served for
many years as Research Director of Balance Consulting, and chaired special training and
advisory services provided to large organizations and nonprofit institutions.  She served a
three-year appointment to the IRS Information Reporting Program Advisory Committee
(IRPAC) and was Chair of the IRPAC Subcommittee on Small Business and Self-Employed
(SBSE) tax issues.   Marianne previously worked for a large Michigan law firm, and served
as a Research Attorney for the Michigan Court of Appeals.      

Mary Kallewaard
Mary oversees Cokala client contact and project management, monitors federal and state
regulatory and legislative developments, and is the primary author of Cokala’s weekly
bulletins on federal and state tax compliance.  She has worked in tax information reporting
technical compliance for the past 15 years, and previously was a senior manager at
Balance Consulting, a company specializing in training on tax information reporting
compliance, where she served in multiple roles including editing and writing for specialized
tax compliance publications, and developing curriculum for tax reporting compliance training
programs.  Mary was a three-year appointee to the IRS Information Reporting Program
Advisory Commitee (IRPAC) and served as Chairperson of the IRPAC for 2015.

The Cokala group also includes additional highly experienced professional advisors, and
technical support specialists.
Please give us a call at 734.629.5155 or send us an email to
COKALA Tax Information Reporting Solutions, LLC - telephone 734.629.5155
PO Box 2224, Ann Arbor MI 48105-2224 - fax 734.428.0702