“At Celtic Business Solutions, we help business owners stay organized, keep their books accurate, and get the financial clarity they need to make better decisions. Our work helps clients reduce bookkeeping stress, avoid cleanup, stay on top of payroll and billing, and give their CPA cleaner records at tax time”
Our Mission
At Celtic Business Solutions, our mission is to provide personalized financial support that empowers business owners to make confident, informed decisions. We take the time to understand your business, your goals, and the vision you are building.
Every business is different. That’s why we deliver tailored bookkeeping solutions designed to reduce stress, bring clarity to your numbers, and support long-term growth.
We handle the day-to-day financial details so you can stay focused on running and growing your business with purpose.
Meet Tammie MacMullen
Tammie MacMullen is an experienced accountant and bookkeeper who helps small business owners create order, clarity, and confidence in their financial operations. With a practical, hands-on approach and a strong attention to detail, she helps clients keep their books accurate, reduce time spent managing financial tasks, and gain clearer insight into the numbers that drive their business.
Since 2003, Tammie has worked alongside small business owners, supporting the day-to-day financial operations of their businesses and helping them stay organized as they grow. In 2022, she founded Celtic Business Solutions LLC to provide personalized bookkeeping and financial support built on trust, accuracy, and real-world experience.
Tammie holds a Bachelor’s degree in Business Management from Eastern Illinois University, with minors in Economics and Family and Consumer Sciences, as well as a Master’s degree in Health Administration. She later earned her Master’s in Accounting and Finance from DeVry University’s Keller Graduate School of Management. Her educational background, combined with years of practical experience, enables her to support clients with both the day-to-day details and the broader financial picture.
Her goal is simple: to help business owners spend less time buried in bookkeeping and more time focused on running and growing their business.
Contact us
Have a question or ready to get started? Whether you need help with bookkeeping, payroll, or accounts and billing management, fill out the form below and tell us a little about your needs. We’ll review your message and be in touch soon!