Quick Comparison
| Firm | Credentials | Focus |
|---|---|---|
| <a href="https://atlantabusinessservices.com/">Atlanta Business Services</a> | Founder-led firm opened in 2007 (19 years) by Tennille Carter, who holds a Bachelor of Science from the University of Phoenix, American Institute of Professional Bookkeepers (AIPB) membership, and QuickBooks certification. | Bookkeeping, accounting, fractional CFO support, profit coaching, and HR consulting for small businesses across the metro Atlanta market. |
| <a href="https://thewrengroupinc.com/">The Wren Group</a> | Owner-led practice founded in 2005 (21 years) by Anne Huntsinger, Advanced Certified QuickBooks ProAdvisor, Intuit Premier Reseller, and 2024 ProAdvisor of the Year selection by Insightful Accountant. | QuickBooks setup and optimization, outsourced bookkeeping, fractional CFO services, and QuickBooks software reselling for owners across the Atlanta metro and beyond. |
| <a href="https://outofofficeaccounting.com/">Out of Office Accounting</a> | Susan Oldknow holds Advanced Certified QuickBooks Online and Desktop ProAdvisor credentials, with Enterprise, Point of Sale, and Elite certifications and over 17 years of bookkeeping experience. | QuickBooks training and consulting, flat-rate bookkeeping, file cleanup and tax preparation, payroll support, and back-office replacement work for small businesses. |
1. Atlanta Business Services
- Address: 3355 Lenox Road NE, Suite 750, Atlanta, GA 30326
- Phone: (678) 840-6000
- Founder / Owner: Tennille Carter (CEO and Founder)
- Operating Since: 2007 (19 years)
- Credentials: AIPB member with QuickBooks certification; staff includes prior QuickBooks ProAdvisor and ACCA-credentialed bookkeepers
- Service area: Atlanta and the broader metro Atlanta business community
- Industries served: Small businesses across general sectors, with bookkeeping and advisory work suited to owner-operated firms
- Website: atlantabusinessservices.com
Buckhead Lenox Road Headquarters
Atlanta Business Services works from a 3355 Lenox Road NE office in the Buckhead business district, inside the 30326 zip that holds many of the city’s professional service firms. Tennille Carter founded the practice in 2007 as Atlanta Bookkeeping Solutions, LLC, and the shop rebranded to Atlanta Business Services in 2024 to reflect the broader suite of services. The Lenox Road address sits a short distance from Lenox Square and the Buckhead MARTA station, which gives in-person clients straightforward access from downtown Atlanta and the northern suburbs.
Bookkeeping Roots with Expanded Advisory Reach
The firm began as a pure bookkeeping shop and added accounting, fractional CFO support, business and profit coaching, and HR consulting under the 2024 rebrand. That progression matters for small-business owners who want one shop to grow with them rather than rotating among separate vendors for books, financial review, and people operations. The founder’s AIPB membership and QuickBooks certification anchor the bookkeeping core while the wider service slate handles the work that typically follows a growing payroll.
Single-Owner Continuity Across 19 Years
Tennille Carter has stayed at the helm of the practice from the 2007 founding through the 2024 rebrand, which puts the practice well past the five-year tenure minimum this directory applies. The single-owner continuity matters because it keeps the founder’s bookkeeping standards inside daily client work rather than diffusing them through a sequence of acquired offices. Public Better Business Bureau records list the firm under its prior Atlanta Bookkeeping Solutions name and current Atlanta Business Services branding alike.
Profit Coaching and HR Layered onto Books
Published service categories cover bookkeeping, accounting, fractional CFO and controllership, profit coaching, and HR consulting. Profit coaching pairs the monthly books with margin review and pricing conversations, which is unusual for a bookkeeping-rooted firm and useful for owners who want their numbers translated into operating decisions. The HR consulting line handles staffing and policy questions that often arrive at the same time as the first payroll provider conversation, so the company can keep both conversations under one roof.
2. The Wren Group
- Address: 7720 A Hampton Place, Loganville, GA 30052
- Phone: (770) 554-5414
- Founder / Owner: Anne Huntsinger (Founder and CEO)
- Operating Since: 2005 (21 years)
- Credentials: Advanced Certified QuickBooks ProAdvisor, Intuit Premier Reseller, 2024 ProAdvisor of the Year selection by Insightful Accountant, with 25-plus years of QuickBooks process work
- Service area: Greater Atlanta metro, with remote engagements nationwide through cloud QuickBooks files
- Industries served: Small businesses across many sectors, with deep QuickBooks Pro, Premier, Enterprise, Point of Sale, and Online experience
- Website: thewrengroupinc.com
Loganville Office Serving Greater Atlanta
The Wren Group works from a 7720 A Hampton Place office in Loganville, on the eastern edge of the Atlanta metro inside Walton County. Anne Huntsinger founded the shop in 2005, which puts the practice at 21 years of single-owner operation. Loganville sits along U.S. Highway 78 east of Stone Mountain and gives clients in Gwinnett, DeKalb, and the eastern Atlanta suburbs a direct route to the office, while cloud-based file work covers clients farther afield.
Advanced Certified ProAdvisor and Intuit Premier Reseller
The Advanced Certified QuickBooks ProAdvisor mark is the highest certification tier Intuit offers to ProAdvisors and requires recurring testing beyond the base certification. The Wren Group also holds Intuit Premier Reseller status, which lets the practice license QuickBooks Pro, Premier, Enterprise, Point of Sale, Online, Payments, Field Service Management, Merchant Services, and Payroll directly. That pairing means a client can buy the software and the bookkeeping setup from the same shop, which avoids a handoff between a reseller and an unrelated bookkeeper.
2024 ProAdvisor of the Year Recognition
Insightful Accountant, the industry trade publication that runs the annual ProAdvisor awards program, selected Anne Huntsinger as 2024 ProAdvisor of the Year. The recognition reflects sustained QuickBooks consulting work rather than a single project win, and it puts the firm inside a small group of nationally recognized ProAdvisors. For Atlanta owners who use that recognition as a shortlist filter, the credential is verifiable through Insightful Accountant’s awards archive.
Broad QuickBooks Stack with Fractional CFO Layer
Published services cover outsourced bookkeeping, QuickBooks setup and optimization, fractional CFO support, and QuickBooks software resale. The QuickBooks stack reaches from Pro and Premier desktop editions through Enterprise, Online, Point of Sale, Payments, and Field Service Management, which suits owners who run inventory, field crews, or retail point-of-sale alongside standard back-office books. The fractional CFO line handles the financial review work that typically follows once monthly books are clean.
3. Out of Office Accounting
- Address: Cumming, GA (mailing and remote-first; Atlanta metro service area)
- Phone: (770) 400-0078
- Founder / Owner: Susan Oldknow (Owner)
- Operating Since: Practice runs on 17-plus years of Susan Oldknow QuickBooks ProAdvisor work in the Atlanta metro
- Credentials: Advanced Certified QuickBooks ProAdvisor for Online and Desktop, with Enterprise, Point of Sale, and Elite certifications and Intuit Reseller status
- Service area: Atlanta metro, with Buckhead-area client work and remote support across Georgia
- Industries served: Small businesses across general sectors, with custom file work for each client setup
- Website: outofofficeaccounting.com
Cumming Base and Atlanta Metro Service
Out of Office Accounting runs from a Cumming, Georgia base in Forsyth County and serves clients across the Atlanta metro, with the public Alignable profile noting Buckhead-area service. Cumming sits along Georgia State Route 400 north of the Perimeter and gives the company a direct route into northern Atlanta neighborhoods. The remote-first setup matters for clients who prefer cloud QuickBooks Online file sharing over physical office visits, while in-person training engagements run on request.
Advanced ProAdvisor and Intuit Reseller Status
Susan Oldknow holds Advanced Certified QuickBooks ProAdvisor credentials for both Online and Desktop, plus Enterprise, Point of Sale, and Elite certifications. The Advanced tier requires recurring Intuit testing and sits above the base ProAdvisor certification, and the Intuit Reseller status lets the shop license QuickBooks software directly. The Atlanta Build Expo named Oldknow a 2019 trainer at its trade show, which is a published industry recognition that sits outside the standard client-testimonial space.
Training-Forward Engagement Style
The firm builds engagements around training and transparency, with the published goal of teaching the client how to read the books rather than only producing the monthly reports. That approach suits owners who want to retain in-house bookkeeping capability while drawing on outside expertise for setup, cleanup, and review work. Training runs at an hourly rate while ongoing bookkeeping and file cleanup engagements run at flat monthly rates, which gives the client a transparent fee map for each service line.
Flat-Rate Books with Cleanup and Back-Office Work
Service categories cover accounting and bookkeeping at flat-rate billing, file cleanup and tax-prep preparation at flat-rate billing, training at hourly billing, payroll support, and back-office replacement engagements. The back-office line handles owners who want a full outsourced bookkeeping team rather than a partial-service engagement, which is a step beyond the monthly reconciliation work most ProAdvisor shops publish.
Reference Notes
Atlanta Business Services address (3355 Lenox Road NE, Suite 750, Atlanta, GA 30326) and phone (678) 840-6000 were cross-checked against the practice’s own contact page on atlantabusinessservices.com, the Yelp business listing for the prior Atlanta Bookkeeping Solutions name, an Allbiz directory entry, and a Better Business Bureau profile. The 2007 founding date, Tennille Carter ownership, AIPB membership, and University of Phoenix Bachelor of Science were sourced from the firm’s About page, the East Atlanta Patch and EIN Presswire rebrand announcements, and the Metro Atlanta CEO trade-press coverage of the 2024 rebrand. The expanded service slate (bookkeeping, accounting, fractional CFO, profit coaching, HR consulting) was sourced from the company’s own site copy.
The Wren Group address (7720 A Hampton Place, Loganville, GA 30052) and phone (770) 554-5414 were cross-checked against the shop’s own contact page on thewrengroupinc.com, the practice’s LinkedIn company page, and ZoomInfo and Rocketreach business directory listings. The 2005 founding date and Anne Huntsinger ownership were sourced from the firm’s About the Owner page and her LinkedIn profile. Advanced Certified QuickBooks ProAdvisor and Intuit Premier Reseller status were sourced from the company’s own site copy, and the 2024 ProAdvisor of the Year recognition was sourced from Insightful Accountant’s awards coverage.
Out of Office Accounting phone (770) 400-0078 was cross-checked against the shop’s own contact page on outofofficeaccounting.com and the practice’s Facebook business profile. Susan Oldknow ownership and the Advanced Certified QuickBooks Online and Desktop, Enterprise, Point of Sale, and Elite ProAdvisor certifications were sourced from the firm’s site copy, the Intuit Find-a-ProAdvisor directory listing keyed to outofofficeaccounting, and the Alignable Atlanta business profile. The Cumming base with Atlanta metro service area was sourced from the LinkedIn profile and the Alignable profile, which notes Buckhead-area service. All three firms appear as independent, founder-led, or owner-led bookkeeping practices and not as franchised or rolled-up brands such as Bench, Pilot, QuickBooks Live, BELAY, Bookkeeper360, Bookminders, Supporting Strategies, Bookkeeper.com, or 1-800Accountant.
Selection Methodology
This list applies four filters to the Atlanta market. First, the company has to be independent, family owned, or founder led rather than part of a national rollup or franchise brand. Second, the shop must show active QuickBooks credentials or a QuickBooks-centered practice, with that focus visible on its own site or on a third-party directory. Third, the practice has to have been in business for at least five years, with priority given to firms past the ten-year mark. Fourth, the firm has to position itself as a bookkeeping practice rather than a pure CPA tax-prep shop. Public address and phone data also had to match across at least two independent sources, including the company’s own site plus a Better Business Bureau record, a Yelp business profile, a LinkedIn company page, or another third-party directory. National rollup brands such as Bench, Pilot, QuickBooks Live, BELAY, Bookkeeper360, Bookminders, Supporting Strategies, Bookkeeper.com, and 1-800Accountant were excluded by design, since this directory targets locally owned shops in the Atlanta market.
Frequently Asked Questions
Do these firms serve clients outside Atlanta proper?
Yes. Atlanta Business Services works from a Lenox Road office in Buckhead and serves the metro Atlanta business community across Fulton, DeKalb, and the surrounding counties. The Wren Group works from a Loganville office on the eastern edge of the metro inside Walton County and reaches the broader Atlanta market plus remote clients through cloud QuickBooks files. Out of Office Accounting runs from a Cumming base in Forsyth County and serves the Atlanta metro, with public profiles noting Buckhead-area client work and remote support across the state.
Are these firms CPA practices or bookkeeping practices?
All three position themselves as bookkeeping and QuickBooks practices rather than as CPA audit shops. Atlanta Business Services pairs bookkeeping with fractional CFO support, profit coaching, and HR consulting under the founder’s AIPB and QuickBooks credentials. The Wren Group pairs Advanced Certified QuickBooks ProAdvisor bookkeeping with QuickBooks software reselling and fractional CFO work. Out of Office Accounting pairs Advanced ProAdvisor bookkeeping with QuickBooks training, file cleanup, payroll, and back-office replacement engagements. Owners who need formal CPA audit or attest work would still need to retain a licensed CPA firm separately.
Do Atlanta bookkeeping firms typically offer remote service?
Yes. The Wren Group publishes remote QuickBooks consulting and bookkeeping alongside in-person engagements, which suits owners across the Atlanta metro and clients further afield. Out of Office Accounting runs a remote-first model with cloud QuickBooks Online file sharing while keeping in-person training as a published service. Atlanta Business Services pairs its Lenox Road office presence with cloud-based bookkeeping work, so clients can pick a fully in-person setup, a fully virtual setup, or a hybrid mix.
How long have these firms been operating?
Atlanta Business Services was founded in 2007 (19 years) under Tennille Carter. The Wren Group was founded in 2005 (21 years) under Anne Huntsinger. Out of Office Accounting runs on 17-plus years of Susan Oldknow QuickBooks ProAdvisor work in the Atlanta metro. Each firm sits past the five-year minimum tenure threshold this directory applies, and each has stayed under its original ownership across its full window without joining a national rollup brand.
Editorial Note
This post was prepared on 2026-05-11 using publicly available web sources, including each firm’s own website, third-party business directories such as Yelp, the Better Business Bureau, Alignable, and Allbiz, the Intuit Find-a-ProAdvisor directory, Insightful Accountant awards coverage, and LinkedIn business profiles. Address, phone, ownership, and tenure details reflect those sources at the time of writing. Readers should confirm current details directly with each firm before contracting, since office locations, phone numbers, and ownership can change after publication.