Castro & Company, LLC

Castro & Company, LLC, doing business as Castro & Co LLC, is a minority-owned, Hispanic American-owned small business headquartered in Alexandria, Virginia, that delivers accounting, auditing, financial advisory, and internal controls assessment services to federal agencies as a prime contractor (97% of recent awards) across the civilian and defense sectors. The firm is a limited liability company structured as a for-profit entity and holds multiple indefinite delivery vehicles and GSA Schedule positions that anchor its federal footprint.

The vendor's customer concentration is heavily anchored in civilian agencies and specialized audit work. NASA's Shared Services Center dominates by both volume and dollar magnitude, accounting for 67 awards valued at $166.3 million (combined potential value), reflecting Castro & Company's deep presence on the NASA Contract Audit Support Services (CASS) $55 million IDIQ. The Defense Contract Audit Agency places the second-largest number of awards (29 awards, $7.9 million combined potential value), though the dollar gap reveals the strategic importance of NASA work. The Department of Transportation's Federal Transit Administration, Department of the Treasury's Departmental Offices, and US Agency for Global Media round out the top five by award count, collectively representing 47% of all awards. By potential value, the Army Headquarters Office of the Secretary ($20.2 million across 8 awards), Pension Benefit Guaranty Corporation ($16.9 million across 4 awards), and Federal Trade Commission ($16.6 million across 4 awards) displace Federal Transit Administration in the ranking, signaling that while FTA places many small orders, larger single and multi-year blanket purchase agreements with Treasury, Army, PBGC, and FTC anchor Castro & Company's revenue opportunity.

Castro & Company's service portfolio is narrowly concentrated in federal financial compliance and oversight. The vendor specializes in financial statement audits, internal control assessments per OMB Circular A-123, FISMA compliance audits, incurred cost audits under cost accounting standards, enterprise risk management reviews, and A-123 financial integrity support. Representative prime work includes a $21.5 million Defense Contract Management Agency delivery order for Financial Improvement and Audit Remediation (FIAR) support services under the OASIS+ Small Business IDIQ (awarded September 2022, through September 2027); a $4.996 million Commodity Futures Trading Commission delivery order for CFTC Fiscal Manual and Fiscal Controls work (awarded September 2022, through September 2027); a $9.5 million single-award Federal Trade Commission BPA for budget and financial management services including certified public accounting audits and internal control assessments (awarded July 2024, through July 2029); and a $6 million single-award Department of Interior BPA for financial management support services with data management, analysis, and automation capabilities (awarded June 2025, through June 2030). Recent activity shows a consistent flow of awards in the $500 thousand to $4 million range across civilian agencies, with the NASA CASS vehicle generating smaller but frequent task orders for resident auditor support and aerospace contractor audits.

Castro & Company holds prime positions on multiple governmentwide and agency-specific vehicles. The One Acquisition Solution for Integrated Services Plus – Total Small Business (OASIS+SB) IDIQ awarded December 2024 carries a multi-billion-dollar ceiling with no specified limit and represents a critical vehicle for competition across seven functional domains (Management and Advisory, Technical and Engineering, Research and Development, Intelligence Services, Environmental Services, Facilities, and Logistics); the vendor has already received a $998,094 Air Force task order for accounting operations support under this vehicle (awarded September 2025). The GSA Multiple Award Schedule (MAS) dominates the vendor's execution vehicle portfolio, with 166 task orders valued at $274.1 million combined potential value, positioning Castro & Company as a utility contractor for civilian-agency audit and financial services procurement. The $55 million NASA Contract Audit Support Services (CASS) IDIQ, awarded October 2021 as a Total Small Business set-aside, has generated 60 task orders valued at $4.1 million and represents the vendor's deepest incumbent relationship. Additional vehicles include single-award and multiple-award BPAs with Federal Trade Commission ($9.5 million), Pension Benefit Guaranty Corporation ($5.3 million), the Office of Inspector General ($7.134 million), Millennium Challenge Corporation ($4.9 million), Federal Transit Administration ($2 million), Department of the Treasury ($1.57 million for Office of Drug Control Policy internal controls), and the Centers for Medicare and Medicaid Services ($11.5 million for cost-based MCO examinations). A newly minted $60 million Federal Railroad Administration A-123 Support BPA (awarded December 2024) and a $2.5 million United States Trade and Development Agency Program Audit Series IDIQ (awarded September 2021) round out the vehicle set. The vendor competes predominantly under Total Small Business set-aside designations on its core NASA, DCAA, OIG, and agency-specific work, with competitive (non-set-aside) positioning on larger, full-and-open FTC, Treasury, and civilian-agency procurements.

Activity has trended softly downward in recent years—20 awards in 2022, declining to 12 awards year-to-date in 2026—but the combined potential value across recent awards (279 total, $494.5 million) masks concentration risk. Twenty-four awards (combined potential value $44.6 million) face ultimate completion within the next twenty-four months and will enter recompete. The NASA CASS contract, which anchors roughly one-third of the vendor's dollar footprint, was originally awarded in October 2021 with an October 2026 expiration; NASA may recompete or extend that vehicle, but the cliff is material.

Castro & Company operates almost entirely as a prime contractor (97% of awards). Across SCI-reportable prime service contracts, the vendor self-performs approximately 94% of contractor hours, with an average sub-hours share of 6% across prime contracts and seven named subcontractors reported. The vendor does function as a named subcontractor to larger audit and IT services primes—recent sub-work includes Department of Labor financial statement and FISMA audit support under KPMG (awarded February and March 2026), Defense Security Cooperation Agency audit support under Sikich CPA LLC (awarded December 2025), and United States Transportation Command Working Capital Fund audit support under Sikich (awarded March 2025)—but sub-work represents only 3% of the vendor's recent award count and is used tactically to support specific agency audit engagements where Castro & Company provides specialized support. The subcontractor role is not a strategic platform; the vendor builds its own delivery teams and does not rely on subcontractors to scale.

SCI-reported federal service-contract invoicing shows steady growth. In FY2022, the vendor invoiced $3.6 million across 21.8 FTEs on SCI-reportable prime contracts; in FY2023, invoicing grew to $8 million across 36.3 FTEs; and in FY2024, invoicing rose to $11.7 million across 54.9 FTEs. SCI covers only federal service contracts above the $150,000 threshold and excludes goods, products, micro-purchases, classified work, and non-federal revenue, so these figures represent a strict subset of the vendor's federal revenue and a smaller portion of total enterprise invoicing. Across SCI prime contracts, government-paid hourly rates span a median of $97.81 per hour (10th percentile $31.63/hr, 90th percentile $175.75/hr), reflecting a mix of entry-level audit staff, mid-level auditors, and senior managers deployed across audit and compliance engagements. GSA Schedule labor categories span eight tiers from Staff I ($98.11/hr) through Partner/Principal ($250.40/hr), all pegged to bachelor's-degree minimums with no security-clearance requirements, reflecting the vendor's non-classified, professional-services profile.

Castro & Company's federal work is confined to civilian agencies and does not serve a prime-contract customer base in the Department of Defense, Department of Homeland Security, or intelligence community. The vendor's technical posture is transactional—accounting, auditing, and financial controls support—rather than engineering, IT modernization, or mission-critical infrastructure. The narrow service portfolio, concentration of award volume and dollars on NASA and a handful of civilian-agency audit vehicles, and soft recent activity trajectory position Castro & Company as a utility provider in a mature, competitive federal audit and financial-advisory space. The OASIS+SB award and the new FRA A-123 BPA signal continued federal appetite for small-business audit support, but recompete risk on the NASA CASS vehicle and the absence of growth in new-customer diversification merit close monitoring for competitive or partnership strategy.

Castro & Company is an audit, advisory, and accounting services firm specializing in providing the personalized services of a small firm with the full resources and quality of larger CPA firms.