Audit & Attestation Services in Fairfax County & Tysons, VA
Quick answer
In Fairfax County and Tysons, most audits come from federal contracting and federal grants, not Virginia law — Virginia has no statutory nonprofit audit threshold. Contractors need DCAA-ready incurred cost and FAR-compliant financials; nonprofits hit the $1,000,000 Single Audit rule. Your Virtual CPA audits both.
Transparent, fair fees — quoted upfront.
Which rules decide whether you need an audit in Fairfax County & Tysons, VA?
Start here before you request proposals — the answer determines whether you need an audit, a review, or a compilation.
Virginia charitable registration — no audit threshold
Charities soliciting in Virginia register with VDACS (Va. Code § 57-48 et seq.). Financial reporting can be met with the Form 990, audited statements, or — for 990-N filers — a treasurer’s report. Virginia sets no revenue level that requires a CPA audit or review.
Virginia nonprofit audit requirementsFederal contracting — FAR Part 31, DCAA and CAS
Cost-reimbursable and time-and-materials contractors along the Tysons–Reston–Chantilly corridor must support indirect rates under FAR Part 31 and submit annual incurred cost proposals (FAR 52.216-7). Larger CAS-covered contracts add Cost Accounting Standards disclosure and compliance.
Government contractor audits in VirginiaFederal Single Audit — $1,000,000 in federal expenditures
Any nonprofit, school, or local government that expends $1,000,000 or more in federal awards in a fiscal year beginning on or after October 1, 2024 needs a Single Audit under 2 CFR 200.501 ($750,000 for earlier fiscal years). The reporting package is due to the Federal Audit Clearinghouse the earlier of 30 days after the auditor’s report or nine months after year-end.
Single Audit checker401(k) plan audits for growing contractors
A defined contribution plan generally needs an independent audit with its Form 5500 once it has 100 or more participants with account balances at the start of the plan year — a line many fast-growing contractors cross.
401(k) audit requirement checkerNot sure where you land? Use the Audit Requirement Checker or read audit vs review vs compilation.
Who we audit in Fairfax County & Tysons, VA
Defense & civilian-agency contractors
Tysons, Reston, and Chantilly are home to contractors whose audits and agreed-upon procedures support DCAA reviews, surety bonding, and teaming partners.
Small-business & 8(a) participants
SBA 8(a) participants must submit annual financial statements to SBA; the level of CPA involvement depends on gross receipts.
SBIR/STTR technology companies
Research-stage tech firms in the Dulles corridor need accounting systems and cost support that stand up to agency and DCAA review.
Nonprofits & community associations
Human-services nonprofits funded by federal pass-through grants, and the county’s many HOAs and condominiums, round out local audit demand.
Communities covered
All engagements are delivered virtually through electronic document exchange, direct confirmations, and video meetings with management and your board or audit committee.
Fairfax County & Tysons, VA audit FAQs
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Planning an audit in Fairfax County & Tysons, VA?
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Transparent, fair fees — quoted upfront.