Bookkeeping, payroll, and advisory services for small businesses across Northern Virginia and the DMV.

Call or Text: (571) 307-4455

Bookkeeping & Advisory for Greenbriar Businesses

Bookkeeping, payroll, and advisory services for small businesses in Greenbriar, Chantilly. Accurate books and tax-ready records at a flat monthly rate.

What We Handle

We provide bookkeeping, payroll, tax preparation, and advisory services for small businesses in the Greenbriar community and surrounding Chantilly area. Monthly transaction tracking, bank reconciliations, financial statements, and year-end filing. The financial work your business needs without adding a full-time employee to the payroll.

Greenbriar has a solid mix of businesses operating around the town center and along the Route 50 corridor. Whether you run a practice, manage properties, or operate a service company out of the area, we keep your books accurate and your reporting current through full-service bookkeeping built around your business.

Monthly Bookkeeping

Transaction categorization, bank and credit card reconciliation, monthly close, P&L and balance sheet delivered every period. Your books stay current without you spending your evenings in QuickBooks.

Catch-Up Bookkeeping

If your records are months or years behind, we start by cleaning up the backlog. We organize past transactions, fix errors, and bring everything current before transitioning into ongoing monthly service.

Payroll Processing

Full payroll service including direct deposits, tax deposits, quarterly filings, W-2s, and 1099s. Your employees get paid on time, your tax obligations are met, and you stop tracking payroll deadlines yourself.

Tax Preparation and Strategy

Business and personal tax returns filed accurately using books we have maintained throughout the year. We also offer proactive tax strategy sessions to help reduce your liability through entity structuring, timing, and deduction planning.

Greenbriar Businesses We Work With

Most business owners in the Greenbriar area reach out because the financial side of their business has gotten away from them. They started doing the books themselves, it worked for a while, and then the business grew and the books stopped keeping up. Tax season became a scramble. Decisions got made without real numbers behind them. We are bookkeepers in Fairfax who step in and fix that.

We work with businesses doing roughly $100K to $5M in revenue. Professional services firms, healthcare offices, contractors, and property investors are common in this part of western Fairfax County, and we serve all of them.

Professional Services

Professional service firms including consultants, law offices, and agencies operating in the Chantilly and Dulles corridor. We track profitability by client or engagement and keep your books ready for partner review or lender requests.

Healthcare Practices

Medical offices, dental practices, therapy providers, and specialty clinics. We handle the insurance receivable tracking, patient balance reconciliation, and revenue timing that makes healthcare accounting different from most other industries.

Construction and Trades

General contractors, HVAC companies, electricians, and renovation crews working across Northern Virginia. We manage job costing, progress billing, and the financial reporting you need to bid accurately and stay profitable on every project.

Real Estate Investors

Landlords and property management companies with rental portfolios in and around Greenbriar. We track income and expenses by property, handle security deposit accounting, and produce the financial reports your CPA needs at year end.

Frequently Asked Questions

Do you work with businesses in the Greenbriar area?

Yes. We work with businesses throughout Greenbriar and the broader Chantilly and western Fairfax County area. Everything is handled remotely so your exact location doesn't matter.

What does monthly bookkeeping cost?

Monthly bookkeeping starts at $300. Your actual price depends on how many transactions you have and the complexity of your books. We give you a flat quote upfront after reviewing your situation.

Can we meet in person if needed?

Our office is on Random Hills Road in Fairfax, not far from Greenbriar. Most clients prefer working remotely because it's faster and easier, but we're available for in-person meetings when it makes sense.

How fast can you get started?

Typically within a week. If your books are behind, we handle the catch-up work first and then move into regular monthly service. If things are already in reasonable shape, we jump right in.

Do you prepare tax returns for businesses?

Yes. We prepare federal and state returns for S-Corps, C-Corps, partnerships, LLCs, and sole proprietorships. We also handle personal tax returns and can coordinate with your existing CPA if you already have one.

Northern Virginia's Bookkeeping & Advisory Firm

First Step:
Tell Us About Your Business

Every engagement starts with a conversation. Tell us what's going on with your books and we'll give you our honest assessment.

Fairfax-based bookkeeping and advisory firm serving small businesses across Northern Virginia and the DMV. Bookkeeping, payroll, tax preparation, and fractional CFO services from a certified team with over two decades of executive finance experience. QuickBooks and Xero certified, founded and led by Andrew T. Swaby.

  • Xero Silver Partner badge
  • Enrolled Agent badge
  • Better Business Bureau badge
  • Central Fairfax Chamber of Commerce badge

© 2026 ATS Group DBA ATS Bookkeeping & Advisory Services