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 many Fortune 500 companies around the
world.  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 other tax reporting and withholding requirements.  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 processing .  

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 is a former
member of the IRS Information Reporting Program Advisory Committee (IRPAC) and 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 is a current member of the IRS Information Reporting Program Advisory
Committee (IRPAC).

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