Case study: AuditRadar, a database of 34,491 nonprofits with a single audit
By Kai · Updated Oct 19, 2026 · 2 min read
AuditRadar, which I built and run, holds 34,491 nonprofits with a Single Audit on record for 2016 to 2026, 6,731 audit firms, and 30,383 nonprofit websites read for audit RFPs, for all 50 states and DC. Figures are as shown on getauditradar.com on Oct 19, 2026.
| Measure | Value |
|---|---|
| Nonprofits with a single audit on record, 2016 to 2026 | 34,491 |
| Audit firms observed in Federal Audit Clearinghouse filings | 6,731 |
| Nonprofit websites read for audit RFPs (latest read Oct 18, 2026) | 30,383 |
| Jurisdictions | 51 (all 50 states and DC), refreshed weekly |
What it ingests
Federal Audit Clearinghouse single audits, the IRS Exempt Organizations master file and Form 990 e-file data. Accounts are ranked by signal: open audit RFP, auditor changed, first Single Audit, new material weakness and paid preparer changed.
What it ships
Source-linked XLSX, CSV and PDF exports, state territory reports, an audit-firm directory and free tools. Built with Python, DuckDB, SQL and Cloudflare Workers, D1 and R2.
Figures change with each weekly pull. See the live numbers on getauditradar.com.
Sources
- AuditRadar
- Federal Audit Clearinghouse support: Is my organization required to conduct a Single Audit?
Questions people ask
How often is the data refreshed?
Weekly. Every file shows the date of the data it was built from.
Who is it for?
CPA firms, nonprofit software and IT vendors, and grant and finance consultants.
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