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Average time to complete an investigation (days)
Protect public resources from corruption, fraud, waste, and abuse and ensure that City employees and vendors act with integrity. — Improve the impact and effectiveness of investigations.
The average time to close a DOI investigation rose from 214 days in Fiscal 2024 to 251 days in Fiscal 2025, which DOI's own reporting attributes to the mix of cases it handled that year: fewer, more complex investigations, often run jointly with prosecutors and other law enforcement partners, take longer to complete than a larger number of simpler ones. The Fiscal 2026 figure (a year-to-date average of 325 days through the first four months, per DOI's preliminary report) suggests this trend has continued.
Researched July 15, 2026 — DOI, Fiscal 2025 Mayor's Management Report, DOI, Fiscal 2026 Preliminary Mayor's Management Report
* Year to date — this fiscal year isn't complete, so it's not compared against prior years in the target/trend status above.
View as table
| Fiscal year | Actual | Target |
|---|---|---|
| FY22 | 213 days | 180 days |
| FY23 | 201 days | 180 days |
| FY24 | 214 days | 180 days |
| FY25 | 251 days | 180 days |
| FY26 (YTD) | 331 days | 180 days |
Why this is tracked
DOI began as the Office of the Commissioners of Accounts in 1873, established after the corruption of the Tweed Ring exposed how easily city money could be looted without independent checks. It was renamed the Department of Investigation in a 1938 charter revision and remains one of the country's oldest municipal law-enforcement agencies. Today it investigates fraud, corruption, and misconduct by City employees, contractors, and anyone doing business with or receiving funds from the City, including running vendor integrity screening (VENDEX) and an Integrity Monitor Program for contractors with past compliance issues.
DOI Mission and History, New York City Department of Investigation - Wikipedia, DOI Vendor Integrity
Source: Case Management System — via NYC Open Data: Mayor's Management Report, Agency Performance Indicators
Coverage shown: FY22–FY26, reported monthly.
Definition: The average number of days to complete all DOI investigations (excluding background investigations), determined by dividing the total number of days from intake to close for all investigations closed within the reporting period, by the number of investigations closed within the reporting period.