Insights

Strategic Collaboration Castro & Company shows a strong alignment with federal government clients, including a recent NASA engagement. This indicates ongoing opportunities for expanded IT services, compliance advisory, and internal controls improvement offerings tailored to government contractors and agencies.

Integrated Services With a full-service profile spanning audit, advisory, and IT services, there is potential to cross-sell governance, risk, and compliance (GRC) solutions, cybersecurity controls reviews, and IT optimization projects to existing and new clients seeking consolidated CPA firm partnerships.

Quality Credentials A passing peer review with no management comments on internal quality controls reinforces trust with risk-averse government entities and large organizations, creating a compelling case for expanding audit and advisory work, including rapid-response engagements and higher-risk assurance services.

Mid-Mized Scale Serving 51-200 employees positions Castro & Company as a mid-market firm capable of delivering large-firm resources with personalized service. This pairing is attractive to mid-size agencies and departments seeking scalable, relationship-driven CPA and IT services.

Growth Readiness Revenue in the upper mid-market range and a notable federal client win suggest capacity for additional government contracts and enterprise-level advisory programs. Target opportunities include expanding contract vehicles, federal compliance programs, and tech-enabled audit modernization projects.

Castro & Company Tech Stack

Castro & Company uses 8 technology products and services including Alteryx, Canva, Power BI, and more. Explore Castro & Company's tech stack below.

Castro & Company's Email Address Formats

Castro & Company uses at least 1 format(s):
Castro & Company Email FormatsExamplePercentage
FLast@castroco.comJDoe@castroco.com
97%
First.Last@castroco.comJohn.Doe@castroco.com
3%

Frequently Asked Questions

What is Castro & Company's phone number?

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You can contact Castro & Company's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Castro & Company's official website and social media links?

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Castro & Company's official website is castroco.com and has social profiles on LinkedIn.

How much revenue does Castro & Company generate?

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As of July 2026, Castro & Company's annual revenue is estimated to be $100M - $250M.

What is Castro & Company's SIC code NAICS code?

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Castro & Company's SIC code is 8721 - Accounting, Auditing, and Bookkeeping Services NAICS code is 5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services.

How many employees does Castro & Company have currently?

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As of July 2026, Castro & Company has approximately 154 employees across 4 continents, including North AmericaAsiaSouth America. Key team members include Chief Executive Officer: D. B.Managing Partner: T. C.Director It Risk Advisory: D. B.. Explore Castro & Company's employee directory with LeadIQ.

What industry does Castro & Company belong to?

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Castro & Company operates in the Accounting industry.

What technology does Castro & Company use?

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Castro & Company's tech stack includes AlteryxCanvaPower BISucuriMicrosoft SharePointHyperionMicrosoft 365ServiceNow.

What is Castro & Company's email format?

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Castro & Company's email format typically follows the pattern of FLast@castroco.com. Find more Castro & Company email formats with LeadIQ.

When was Castro & Company founded?

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Castro & Company was founded in 2004.
Castro & Company logo

Castro & Company

AccountingVirginia, United States51-200 Employees

Castro & Company is a mid-sized CPA firm offering audit, advisory, and IT services, designed to combine the scale of a larger practice with the personalized attention of a smaller, client-focused firm. It concentrates on serving federal government agencies, delivering a full range of audit, advisory, and accounting work while maintaining independence where applicable and acting as a trusted advisor to improve internal control processes that support mission objectives.

The firm is based in Alexandria, Virginia, and operates within the accounting sector to serve government clients. In February 2023, NASA announced Castro & Company as a new client, reflecting recognition within federal government contracting. A February 2023 peer review by the Virginia Society of CPAs reported a pass rating with no management comments on Castro & Company's system of internal quality controls.

Section iconCompany Overview

Phone number
SIC Code
8721 - Accounting, Auditing, and Bookkeeping Services
NAICS Code
5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services
Founded
2004
Employees
51-200

Section iconFunding & Financials

  • $100M - $250M

    Castro & Company's revenue is estimated to be in the range of $100M - $250M

Section iconFunding & Financials

  • $100M - $250M

    Castro & Company's revenue is estimated to be in the range of $100M - $250M

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