Simpson & Simpson Accounting, LLC is a family/veteran owned business run by Josh and Monica Simpson. Josh and Monica first met at Kennesaw State University and started dating shortly after. The next year Monica attained her accounting degree. Josh, still fresh from a deployment in Iraq was fascinated by all the job offers Monica was getting from her newly gained accounting degree. Josh had always loved the study of money dating back to his childhood when his father showed him how to inventory his coin collection using an old DOS based computer.

So naturally, Josh was also intrigued by the structure and technical challenges of accounting. Josh graduated top of his class, landed a position at Ernst & Young LLP (1 of the big 4 accounting firms) and became a licensed CPA. Monica continued to excel in corporate accounting making her way from a staff position to management. Her work ethic, consistency, and leadership skills helped her climb the ladder quickly.

Josh is grateful for what he learned in the public accounting/corporate world but had a much larger vision. This vision is to run an accounting firm with the comrade and straight forwardness learned from military service while maintaining professionalism and giving top notch service.

Our company is not here to make a quick dollar, but instead to build lasting relationships in which the client can receive assistance in the areas of tax, accounting, benefit planning, and financial consulting.

Josh Simpson, CPA
Managing Partner

Operation Iraqi Freedom III Veteran

Certified Public Accountant – CPA

Ernst & Young LLP Alumni

Bachelors of Business Administration, Major in Accounting (Kennesaw State University)

Skilled in Business & Personal Tax, Financial reporting, Auditing, Reviews, IRS resolutions, Financial & Business Strategies

Grew successful business from scratch and loves helping business owners succeed financially!

Monica Simpson

Bachelors of Business Administration, Major in Accounting (Kennesaw State University)

12+ Years of Corporate Accounting Experience

Restaurant Accounting Expert

Patricia Collier
Senior Manager

Ernst & Young LLP Alumni

25+ years of CFO Experience

Financial Reporting, Accounting Experience

Expert in Financial Problem Solving & Books Cleanup

Quickbooks Online Certified

Bachelors of Business Administration, Major in Accounting (Mississippi State University)


Bill McDevitt, CPA
Senior Manager

Certified Public Accountant – CPA –  since 2001

PricewaterhouseCoopers LLP Alumni

15+ Years of Public Accounting Experience

Masters in Accounting, Tax Concentration (University of Florida)

Bachelors of Science in Accounting (University of Florida)

Bachelors of Business Administration, Major in Finance (University of Florida)

Expert in Business & Personal Tax, Compliance 

Alison Soles, CFE, EA
Senior Tax Accountant

Certified Fraud Examiner (CFE)
Enrolled Agent (EA)
MBA, Finance (East Carolina University)
Bachelors of Business Administration, Major in Accounting (University of North Carolina)
19+ Years of Accounting/Tax Experience

Zach Buck
Senior Tax Accountant

Expert in Business & Personal Taxes

8+ Years Experience Accounting / Taxes

Kola Bonner

Kola Bonner
Accounting Manager

15 years of Financial Accounting Experience
QuickBooks Online Accounting Expert
California State University – Bachelor’s in Accounting

Tanya Smith
Accounting Intern

Heather Szten

Heather Szten
Office Manager

How Can We Help Your Business?

1 free hour of tax/accounting consultation. We guarantee our expertise will help make tax/accounting improvements.

Office Locations


110 Village Trail Suite 114,
Woodstock, GA 30188


3355 Lenox Rd. Suite 750,
Atlanta, GA 30326