County of Sonoma: Single Audit Reports and Findings
County of Sonoma filed 10 single audits between 2016 and 2025; the most recently observed auditor is EIDE BAILLY LLP (2025), and the 2025 report lists 0 findings. Data as of 2026-11-06.
Data as of Nov 6, 2026 · Source: Federal Audit Clearinghouse (public data)
Single audits by year
One row per audit year as the Federal Audit Clearinghouse accepted it. The auditor named is the one observed on that filing; County of Sonoma is recorded in SANTA ROSA, California under EIN 946000539, and the Clearinghouse records it as a local government. Each report opens on the Clearinghouse itself; how to search the Federal Audit Clearinghouse explains the rest of the reporting package.
| Audit year | Fiscal year end | Federal expended | Threshold applied | Auditor observed | Findings | MW / SD | FAC report |
|---|---|---|---|---|---|---|---|
| 2025 | 2025-06-30 | $222,030,794 | $750,000 | EIDE BAILLY LLP | 0 | — | 2025-06-GSAFAC-0000406555 |
| 2024 | 2024-06-30 | $184,027,221 | $750,000 | EIDE BAILLY LLP | 0 | — | 2024-06-GSAFAC-0000357040 |
| 2023 | 2023-06-30 | $166,789,387 | $750,000 | EIDE BAILLY LLP | 0 | — | 2023-06-GSAFAC-0000033081 |
| 2022 | 2022-06-30 | $183,003,500 | $750,000 | EIDE BAILLY LLP | 6 | SD | 2022-06-CENSUS-0000184744 |
| 2021 | 2021-06-30 | $209,740,899 | $750,000 | EIDE BAILLY LLP | 2 | SD | 2021-06-CENSUS-0000184744 |
| 2020 | 2020-06-30 | $133,428,928 | $750,000 | EIDE BAILLY LLP | 1 | — | 2020-06-CENSUS-0000184744 |
| 2019 | 2019-06-30 | $129,226,746 | $750,000 | EIDE BAILLY LLP | 3 | SD | 2019-06-CENSUS-0000184744 |
| 2018 | 2018-06-30 | $137,369,697 | $750,000 | VAVRINEK, TRINE, DAY & CO., LLP | 1 | SD | 2018-06-CENSUS-0000184744 |
| 2017 | 2017-06-30 | $120,748,841 | $750,000 | VAVRINEK, TRINE, DAY & CO., LLP | 1 | SD | 2017-06-CENSUS-0000184744 |
| 2016 | 2016-06-30 | $117,561,907 | $750,000 | VAVRINEK, TRINE, DAY & CO., LLP | 0 | — | 2016-06-CENSUS-0000184744 |
When is the next single audit due?
If County of Sonoma is again required to have a single audit for the fiscal year ending Jun 30, 2026, the reporting package is due to the Federal Audit Clearinghouse by Mar 30, 2027 at the latest.
Whether an audit is required depends on federal awards expended in that year (the single audit threshold). The rule, 2 CFR 200.512(a): the reporting package is due within 30 calendar days after the auditee receives the auditor's report or nine months after the end of the audit period, whichever is earlier; the date above is the nine-month date, moved to Monday when it falls on a weekend. Last verified: 2026-11-15.
Which federal programs did this organization report?
From the most recent accepted report, as listed on its schedule of expenditures of federal awards (SEFA). "Major" is the designation the auditor made under 2 CFR 200.518, not ours.
| ALN | Program | Expended | Major |
|---|---|---|---|
| 93.778 | MEDICAL ASSISTANCE PROGRAM | $32,764,317 | Yes |
| 21.027 | COVID-19 CORONAVIRUS STATE AND LOCAL FISCAL RECOVERY FUNDS | $23,984,790 | No |
| 97.036 | COVID-19 DISASTER GRANTS - PUBLIC ASSISTANCE (PRESIDENTIALLY DECLARED DISASTERS) | $21,588,457 | No |
| 93.558 | TEMPORARY ASSISTANCE FOR NEEDY FAMILIES | $19,163,883 | Yes |
| 10.561 | STATE ADMINISTRATIVE MATCHING GRANTS FOR THE SUPPLEMENTAL NUTRITION ASSISTANCE PROGRAM | $16,521,849 | No |
| 93.558 | TEMPORARY ASSISTANCE FOR NEEDY FAMILIES | $13,982,104 | Yes |
| 20.205 | HIGHWAY PLANNING AND CONSTRUCTION | $8,718,143 | No |
| 20.205 | HIGHWAY PLANNING AND CONSTRUCTION | $8,375,913 | No |
| 93.659 | ADOPTION ASSISTANCE | $8,259,156 | No |
| 93.563 | CHILD SUPPORT SERVICES | $6,774,427 | No |
| 93.658 | FOSTER CARE TITLE IV-E | $6,404,832 | No |
| 10.557 | WIC SPECIAL SUPPLEMENTAL NUTRITION PROGRAM FOR WOMEN, INFANTS, AND CHILDREN | $2,887,687 | No |
| 93.959 | BLOCK GRANTS FOR PREVENTION AND TREATMENT OF SUBSTANCE ABUSE | $2,001,219 | No |
| 93.778 | MEDICAL ASSISTANCE PROGRAM | $1,818,047 | Yes |
| 20.205 | HIGHWAY PLANNING AND CONSTRUCTION | $1,736,800 | No |
| 20.205 | HIGHWAY PLANNING AND CONSTRUCTION | $1,715,686 | No |
| 20.205 | HIGHWAY PLANNING AND CONSTRUCTION | $1,658,115 | No |
| 93.658 | FOSTER CARE TITLE IV-E | $1,641,451 | No |
| 93.044 | SPECIAL PROGRAMS FOR THE AGING, TITLE III, PART B, GRANTS FOR SUPPORTIVE SERVICES AND SENIOR CENTERS | $1,310,886 | No |
| 20.106 | AIRPORT IMPROVEMENT PROGRAM, INFRASTRUCTURE INVESTMENT AND JOBS ACT PROGRAMS, AND COVID-19 AIRPORTS PROGRAMS | $1,306,980 | No |
| 20.205 | HIGHWAY PLANNING AND CONSTRUCTION | $1,305,545 | No |
| 10.937 | PARTNERSHIPS FOR CLIMATE-SMART COMMODITIES | $1,238,848 | No |
| 97.047 | BRIC: BUILDING RESILIENT INFRASTRUCTURE AND COMMUNITIES | $1,170,627 | No |
| 93.778 | MEDICAL ASSISTANCE PROGRAM | $1,071,200 | Yes |
| 97.036 | DISASTER GRANTS - PUBLIC ASSISTANCE (PRESIDENTIALLY DECLARED DISASTERS) | $966,418 | No |
What findings did the auditor report?
The reference is the auditor’s; the requirement is the Compliance Supplement category the auditor selected. The finding text itself is not reproduced here; the FAC report linked above carries it in full. What the two severity levels mean: material weakness vs significant deficiency.
The most recent report lists no finding.
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How we computed this
Every row comes from the Federal Audit Clearinghouse record named beside it, one report per audit year, with a resubmission superseding the filing it replaces. The auditor is the one named on that filing — it is not a statement about who audits County of Sonoma now. Form 990 figures come from the IRS e-filed return named by its object id. This page exists because the organization filed at least two single audits, or one with a finding.
Cite this page
AuditRadar. “County of Sonoma, California Single Audits 2016–2025.” https://getauditradar.com/single-audits/ca/county-of-sonoma-946000539/. Data as of 2026-11-06.