Formerly Thompson & Lengacher CPAs, we are pleased to continue to serve you as Clarity CPAs. Same team, same quality services.
About Us

Your Trusted Partner in Tax Excellence

For years, Clarity CPAs have been providing quality, personalized financial guidance to local individuals and businesses. Our expertise ranges from basic tax management and accounting services to more in-depth services such as audits, financial statements, and financial planning.

We are one of the leading firms in and throughout the area. By combining our expertise, experience, and the team mentality of our staff, we assure that every client receives the close analysis and attention they deserve. Our dedication to high standards, hiring of seasoned tax professionals, and work ethic is the reason our client base returns year after year.

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A Helping Hand

At Clarity CPAs, we are tremendously proud of the impact that we have made in helping our clients by providing quality accounting assistance and exceptional service!

Our Mission, Vision & Values

Empowering Financial Clarity with Trusted Values

Integrity First

Acting with honesty and upholding the highest ethical standards in every decision.

Continuous Improvement

Staying ahead of financial trends for precise, compliant outcomes.

Client Focus

Your goals shape every solution we create with clarity, purpose, and lasting impact.

Collaboration

Building trust and long-term growth through teamwork, collaboration, and shared success.

We aim to become the most trusted partner in financial and tax advisory, empowering clients with clarity, compliance, and confidence for lasting success and sustainable growth.

We Are Experts

Trusted Experts for Your Finances

Elizabeth Heil, CPA

elizabeth@claritycpas.net | 618-288-9877

Bachelor of Science- University of Illinois – 1998

Master of Business Administration – Southern Illinois University Carbondale – 1999

Certifications: AICPA + ICPAS

Elizabeth began her public accounting career in 1999 and has built a reputation for providing personal, attentive service in sensitive financial matters.

A longtime community leader in the Belleville and Glen Carbon areas, she has been recognized as a Top Executive by St. Louis Small Business Monthly and honored with the Tallerico Leadership Award for her dedication to clients, her team, and the local community.

Heather Clugston, CPA

heather@claritycpas.net | 618-288-9877

Bachelor of Science, Accountancy – Southern Illinois University Edwardsville 2009

Master of Science in Accounting – Southern Illinois University Edwardsville 2010

Heather has more than 15 years of experience in public accounting, specializing in tax preparation, bookkeeping, and assurance services for individuals and small to mid-sized businesses.

Known for her attention to detail and empathetic approach, she is trusted by clients across a wide range of financial needs. Originally from St. Rose, Illinois, Heather lives in Trenton with her husband and two daughters.

Holly Dubach

holly@claritycpas.net | 618-288-9877

Bachelor of Science- Southern Illinois University Edwardsville – 2022

Associates of Arts – Southwestern Illinois College – 2020

Holly joined Clarity CPAs in 2023 after earning her accounting degree in 2022. She focuses on individual and corporate tax preparation and supports small to mid-sized businesses with payroll and QuickBooks bookkeeping.

Originally from Highland, Illinois, Holly enjoys spending time with her husband, kids, and puppy outside of work.

Julie Billeter, CPA

julie@claritycpas.net | 618-288-9877

Bachelor of Science- Accountancy
Southern Illinois University Edwardsville – 2002

Master of Science- Accountancy
Southern Illinois University Edwardsville – 2003

Julie joined Clarity CPAs in 2025 and brings over 22 years of experience in public accounting. 

Her areas of expertise include Tax Planning and Preparation, Payroll, and Bookkeeping. 

She also has experience with Not for Profit and Employee Benefit Plans. 

Sherryl Jones

sherryl@claritycpas.net | 618-288-9877
MSA - Southern Illinois University, Edwardsville 2023

Sherryl joined Clarity CPAs in 2023 with a previous 9 years of experience in public accounting. She is the friendly face you see at Clarity’s  front desk to greet our clients and visitors.

As our Administrative Assistant, she is responsible for providing excellent client care, assisting in filing tax returns, and providing clerical support for our dedicated accounting professionals.

Sherryl lives in Bethalto and enjoys spending time with her family and grandkids outside of the office.

Erin Engeling

erin@claritycpas.net | 618-288-9877

Bachelor of Science- Southern Illinois University Edwardsville – 2008

Associates of Science – Southwestern Illinois College – 2004

Certifications: QuickBooks Online; Bookkeeping Certificate

Erin has been with Clarity CPAs since 2020 having 3 years of experience in accounting and bookkeeping in addition to more than 15 years in various management capacities in.

Her areas of expertise include payroll, monthly and quarterly taxes, W-2 preparation, 1099 preparation, QuickBooks management and entries, and general bookkeeping functions for small to medium sized businesses.