Top NASA offices of certified public accountants contractors
In the 12 months ending Nov 5, 2026, the National Aeronautics and Space Administration obligated $5.3M in net prime contract dollars under NAICS 541211, down 14.7% from $6.2M in the preceding 12 months. 8 prime contractors received positive obligations, and 2 of them accounted for 80% of that spend.
Prime contracts funded by the National Aeronautics and Space Administration. Latest 12 months: Nov 6, 2025 to Nov 5, 2026. Source: USAspending.gov.
See 3 potential recompetes ↓Obligations by fiscal year
Net prime contract obligations by federal fiscal year (October to September).
Top NASA contractors for NAICS 541211
Ranked by positive obligations in the latest 12 months. Share is of all positive obligations in this market.
| # | Contractor | Latest 12 mo | Prior 12 mo | Share | Rank change |
|---|---|---|---|---|---|
| 1 | Sikich CPA LLC | $4.2M | $0 | 79.3% | New |
| 2 | Castro & Company, LLC | $648K | $1.8M | 12.1% | — |
| 3 | Regis & Associates, PC | $172K | $124K | 3.2% | ▲ 2 |
| 4 | Deva & Associates PC | $99K | $137K | 1.8% | — |
| 5 | Hamilton Enterprises, LLC | $91K | $55K | 1.7% | ▲ 3 |
| 6 | UHY LLP | $71K | $63K | 1.3% | — |
| 7 | Harper Rains Knight & Co PA | $21K | $20K | 0.4% | ▲ 3 |
| 8 | CKH Cpas and Advisors, LLC | $4K | $4K | 0.1% | ▲ 3 |
What changed in the last 12 months
Contractors with the largest change in reported obligations versus the preceding 12 months.
Largest gains
- $0 → $4.2M (+$4.2M) · now #1
- Regis & Associates, PC$124K → $172K (+$48K) · now #3
- $55K → $91K (+$37K) · now #5
Largest declines
- $3.4M → −$15K (−$3.4M) · no latest-period obligations
- $1.8M → $648K (−$1.2M) · now #2
- Tichenor & Associates, LLP$462K → −$18K (−$480K) · no latest-period obligations
New to this market
1 contractors received their first obligations in this market (since FY2022) during the latest 12 months. The largest:
| Contractor | First obligation | Latest 12 mo |
|---|---|---|
| Sikich CPA LLC | Mar 31, 2026 | $4.2M |
Where the money comes from
Funding sub-agencies within the National Aeronautics and Space Administration, latest 12 months. The funding organization can differ from the office that runs the requirement.
| Funding sub-agency | Latest 12 mo | Prior 12 mo | Change |
|---|---|---|---|
| National Aeronautics and Space Administration | $5.3M | $6.2M | Down $911K (14.7%) |
Potential recompetes
Large awards in this market whose current period of performance ends in the next 18 months. Treat these as research leads: options, extensions, and follow-on vehicles often change the timing.
| Award | Incumbent | Obligated | Current end |
|---|---|---|---|
| 80HQTR26F0001 | Sikich CPA LLC THE CONTRACTOR SHALL PROVIDE AN ANNUAL INDEPENDENT AUDIT OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION (NASA) FINANCIAL STATEMENTS FOR FISCAL YEAR (FY) 2026 SUBJECT TO THE… | $2.2M | Jan 31, 2027 |
| 80NSSC22FA023 | Castro & Company, LLC NASA HQ OFFICE OF PROCUREMENT RESIDENT AUDITOR SUPPORT (CASS) TASK ORDER | $2.4M | Apr 20, 2027 |
| 80HQTR26F0016 | Sikich CPA LLC THE CONTRACTOR SHALL PROVIDE AN ANNUAL INDEPENDENT AUDIT OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION (NASA) FINANCIAL STATEMENTS FOR FISCAL YEAR (FY) 2027 SUBJECT TO THE… | $1.8M | Jan 31, 2028 |
Common questions
Who are the top NASA contractors for NAICS 541211?
In the latest 12 months, Sikich CPA LLC ($4.2M), Castro & Company, LLC ($648K), Regis & Associates, PC ($172K) received the most NASA obligations for offices of certified public accountants.
How concentrated is this market?
The eight largest primes held 100.0% of positive obligations, and Sikich CPA LLC alone held 79.3%. 1 contractors won their first obligations in this market during the latest 12 months.
Are any large NASA NAICS 541211 contracts ending soon?
3 of the largest awards in this market reach their current end date in the next 18 months. The first is 80HQTR26F0001 (Sikich CPA LLC, $2.2M obligated), ending Jan 31, 2027. An end date is a research lead, not a confirmed recompete: options and extensions often move it.
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$14.1MFigures are net obligations on prime contracts (award types A–D) from USAspending.gov, grouped by funding agency and the NAICS code on each award. Net obligations include deobligations and corrections, so they can differ from positive-obligation totals. See methodology.
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