The bookkeeper behind GAT LLC — and the reason the firm exists.
GAT LLC is not a faceless practice. Gabriel Thomas is the person who reviews the accounts, asks the questions, and sends the follow-up. This page is written to hold his verified story — not a manufactured one.
- Official titleTo confirm
- Years of experienceTo confirm
- Education and certificationsTo confirm
- Bookkeeping softwareTo confirm
- Industries servedTo confirm
- Service areaTo confirm
A clearer system begins with someone willing to understand how the business works.
Good bookkeeping is less about software and more about attention: noticing that a deposit does not match an invoice, that a category has quietly become a catch-all, that a month closed without a statement. That attention is what an owner is really hiring.
Gabriel's own background — where he trained, what he has worked on, and how he came to lead GAT LLC — belongs in his words, and is reserved below until confirmed.
- Professional background and career path
- How he came into bookkeeping
- The reason he established or leads GAT LLC
- What 'GAT' represents, if it is an acronym
- Whether the public-facing name should be expanded
- Education, training, and certifications
- Bookkeeping and accounting software expertise
- Preferred industries and ideal clients
- Connection to Marietta and Cobb County
- Any verified relationship to Thomas Accounting Service Inc.
Accuracy first
A reconciled account is the difference between a report and a guess. Nothing gets reported that has not been matched to a source.
Plain communication
Questions arrive in plain language, with context about why the answer matters and what is waiting on it.
A repeatable month
The same steps, in the same order, on the same schedule — so the books never depend on a heroic effort.
Clear boundaries
Bookkeeping work stays bookkeeping work. Tax questions are routed to a client's tax professional.
Searches for "GAT" return aviation, construction, transportation, and an unrelated accounting practice. For that reason the firm is always presented as GAT LLC — Bookkeeping for Marietta Businesses. No meaning has been invented for the letters, and none will be published until Gabriel confirms what, if anything, they stand for.

Marietta is the home base, not a marketing detail.
GAT LLC works with the kinds of companies that make up Cobb County's day-to-day economy — trades and contractors, service providers, and independent professionals whose operations have outgrown a spreadsheet.
The business is moving. The books should know where it is.
Start a conversation with Gabriel about the current state of your records and the bookkeeping foundation your business needs next.
Talk With Gabriel