Miller Verchota was founded by Mary Miller and John Verchota in 2000. With prior accounting experience, both Mary and John are dedicated to creating a professional, welcoming accounting firm. A place of business where people can come and express their needs, have high expectations for success, and walk away with an optimistic and satisfied outlook on their taxes and accounting.

Being a smaller business located in McHenry County, we reach out to other small businesses throughout the area. Networking and giving back to the community is an important aspect to our company. Achieving long term relationships and maintaining a respectful, high quality reputation is very important to us.


AICPA The American Institute of Certified Public Accountants Logo

The American Institute of Certified Public Accountants is a nationwide organization that provides professional members and an array of information to assist in the knowledge and standards of GAAP.   There are requirements for membership signup and renewal.   Miller Verchota has been a member of the AICPA for over 35 years. www.aicpa.org

The Illinois CPA Society LogoThe Illinois CPA Society ICPAS is a statewide, professional membership organization dedicated to enhancing the value of the CPA profession. Founded in 1903, ICPAS is the fifth largest state CPA society in the nation. ICPAS represents Illinois CPAs in public accounting and consulting, corporate accounting and finance, government and not-for-profit organizations as well as three affiliate member groups: students, educators and related finance professionals. www.icpas.org

Crystal Lake Chamber of Commerce LogoMiller Verchota currently a member of the Crystal Lake Chamber of Commerce and has been a member for the past 11 years. The Crystal Lake Chamber provides us with the opportunity to network with other local business, marketing, and a place to look for other local vendors. www.clchamber.com

McHenry Chamber of Commerce LogoMiller Verchota is currently a member of the McHenry Area Chamber of Commerce and has been a member for the past 11 years. The McHenry Chamber provides us with great networking opportunities, marketing, and vendor information. www.mchenrychamber.com


Congratulations to Mary Miller for achieving her ABV credential! See the article written for her by the Crystal Lake Chamber of Commerce by clicking here.

Congratulations to Jamie Seda for achieving her Enrolled Agent license!

Mary Miller, CPA/ABV, CVA


Mary Miller CPA, CVAMary Miller QuickBooks Pro AdvisorCPA ABV LogoNACPA National Association of Certified Valuation AnalystsMary Miller, CPA, CVA, founded the company in August of 2000. She graduated from Columbia College with a major in accounting/business. She is an active member of The Illinois CPA Society, AICPA, and The National Association of Certified Valuation Analysts.

After owning her own accounting business from 1990 until May 1994, she merged into a local public accounting firm. She is the treasurer of the Crystal Lake Dawnbreakers Rotary Club, past treasurer of The Johnsburg White Lightning Soccer Club, and past board member of the Johnsburg Softball League. In April of 2003 she was elected to the McHenry County College Board, as a trustee, and is currently serving a six year term. She also has served as the treasurer of The McHenry Area Chamber of Commerce.

John Verchota, CPA, MST


John Verchota, CPAJohn Verchota, CPA,  QuickBooks Pro AdvisorJohn has a Masters degree in Taxation from DePaul University and has been a CPA since 1977 (the year he graduated from Carroll College in Waukesha, Wisconsin). He has worked in local public accounting his entire career.

He has been a member of The American Institute of Certified Public Accountants and Illinois CPA Society since May of 1978.  He served for eleven years as a board member of Family Services & Community Mental Health Center in McHenry, is a current member and past treasurer of the McHenry Chamber of Commerce, and served as a past president and treasurer of The Rotary Club of McHenry.

Jamie Seda, EA


Jamie SedaJamie Seda QuickBooks Pro AdvisorJamie Seda IRS Enrolled AgentAs an Enrolled Agent, Jamie Seda is a federally authorized tax practitioner who has technical expertise in the field of taxation; she is empowered by the U.S. Department of the Treasury to represent taxpayers before all levels of the Internal Revenue Service for audits, collections, and appeals. Her knowledge with tax laws give her the ability to represent those being audited by the IRS.

Jamie has an Associate in Applied Science of Accounting degree from McHenry County College. She is currently enrolled at Columbia College of Missouri pursuing an Accounting Degree. She is a Certified Quickbooks’ ProAdvisor.

Jeff Seda


Jeff Seda QuickBooks Pro AdvisorJeff Seda has a Bachelor Degree of Accounting from Columbia College of Missouri. He has over seven years of accounting experience with Miller Verchota. Jeff's main focus consists of Audit and Compilation work for Miller Verchota. He is a QuickBooks Pro Advisors and can provide excellent accounting software consulting and assistance.

Courtney Hand


Courtney has a Bachelor’s Degree in Accountancy from DePaul University, graduating from the Strobel Honors Program, and is a registered CPA. She began her public accounting career as an auditor at Deloitte in 2004. She provided audit and assurance services for investment management companies and not-for-profit entities. After working for nearly two years at Deloitte, Courtney decided to leave public accounting to pursue an opportunity within the Global Principal Investing group at Bank of America where she was a senior accountant for private equity investments. In 2013, Courtney decided to return to public accounting and began working at Miller Verchota. Within the community, she is an active member of the McHenry chapter of the Mothers and More organization and serves on its Resale Committee. She looks forward to working with the local businesses that Miller Verchota serves.

Tyler O'Brien


Tyler O’Brien is currently a student at MCC pursuing his Bachelor’s Degree in Accountancy from Carthage College, and is currently on track to become a CPA. He is a 2009 Cary-Grove High School graduate. Tyler has volunteered for the IRS sponsored Volunteer Income Tax Assistance program designed to offer tax assistance to individuals making $51,000/yr or less for two years. Tyler is currently in charge of accounts receivable, accounts payable, and bookkeeping work for clients.

Erica Seda


Erica Talley is a growing accountant in our office. She began working with us as our office administrator and has since been promoted to an accountant and continues to gain experience and grow her career. She is currently attending Columbia College of Missouri where she is pursuing a Master’s Degree in Business Administration and will soon sit for the CPA Exam. She is a QuickBooks Pro Advisor and assist in purchasing, implementation, and clean-up in the QuickBooks Program. Her focus is primarily on business clients performing tasks such as business start-up consultations, payroll tax, sales tax, bookkeeping, and income tax returns. She manages our social sites and is our primary marketing specialist.

Office Administrator

Kim O'Connor

Kim O’Connor was hired as the administrative assistant. She grew up in Palatine, went to Palatine High School and Harper College. She worked in a dental office at the front desk and assisted the hygienists for many years. After having 2 kids, she worked at Aspen Homebuilders as an account assistant for 5 years. She then went on to run the front desk at Moffett Physical Therapy in Lake in the Hills for 5 years. She is very excited to start a new career with Miller Verchota, Inc!

Administrative Assistants

Cheri Opatrny

Cheri OpatrnyCheri Opatrny graduated from McHenry County College in 1991 with an Associate in Science degree in Accounting. Her career has been dedicated to work in public accounting. She has been employed by Miller Verchota, Inc. since 2005.