For OFAC’s Sanctions List Search, exact matching is the narrow option; fuzzy matching broadens the names returned. Neither a match score nor an alert proves that a person or business is sanctioned. OFAC recommends no universal score threshold: use the score to identify potential matches, then assess the full list entry against available customer or transaction details under your organization’s procedures.
How exact and fuzzy searches differ
OFAC’s Sanctions List Search lets users set a name-match score. Its slider defaults to 100, which OFAC describes as an exact name match. Lowering the threshold broadens the results to include names the tool considers less similar. The score measures similarity between the entered name and names on OFAC’s lists; it is not a probability that the entries identify the same person or entity. OFAC FAQ 246 and FAQ 247 explain the search behavior and score.
| Approach | What it does in OFAC Sanctions List Search | Practical trade-off |
|---|---|---|
| Exact (score 100) | Returns exact name matches according to the tool’s score setting. | Narrower results can mean fewer alerts, but name variations may not appear. |
| Fuzzy (lower threshold) | Returns broader potential matches based on name similarity. | May capture more name variations, while increasing the number of results requiring review. |
That trade-off is qualitative: the cited OFAC guidance does not provide a measured error rate or quantify how many additional alerts a particular threshold produces.
What OFAC’s fuzzy logic checks
OFAC says its search logic combines character/string matching with phonetic matching. The tool’s documented methods include Jaro-Winkler string comparison and Soundex phonetic comparison. It compares whole names and name parts, then returns the higher score. OFAC FAQ 249 describes those methods.
Recommended Free Tools
#1 Best Overall
- Updated Compliance: While the new rule takes effect on 7/19/2024, training and compliance dates don’t start until 1/19/2026, giving your team ample time to prepare with this thorough guide to OSHA regulations (29 CFR 1910.1200(j)).
- Comprehensive Safety Training Handbook: Prepares your employees for 25 of OSHA’s hottest safety topics, from Confined Space Entry to Workplace Violence, ensuring they are equipped with vital safety knowledge for a safer work environment.
- In-Depth, Easy-to-Understand Content: Each chapter tackles key workplace hazards like Electrical Safety, Lockout/Tagout, Respiratory Protection, and more, helping to prevent injuries and illnesses while promoting safe practices.
- Interactive Learning with Quizzes: Engaging chapter review quizzes reinforce safety concepts, making it easier for employees to retain and apply the knowledge, with downloadable answer keys for easy tracking.
- Specifications: English, Softbound, full-color pages (272 pages) offer clear, visually appealing safety information for a diverse workforce, with home safety details included throughout.
Fuzzy logic applies to the name field only. OFAC says other fields use character matching, so lowering the score does not make every search field fuzzy. These details describe OFAC’s own search tool; they should not be assumed to describe another screening product’s algorithms or score scale.
How to choose a match threshold
OFAC does not recommend one threshold for every search or organization. Each search has its own facts, and the agency tells users to base their threshold decisions on internal risk assessments and established compliance practices. OFAC FAQ 250 addresses threshold recommendations.
Rank #2
- Federal Motor Carrier Safety Administration (FMCSA) Manual: The essential resource for commercial motor vehicle (CMV) operators to ensure compliance with DOT regulations.
- Critical Topics: Explore comprehensive how-to information on compliance fundamentals, driver qualification and licensing, drug and alcohol testing, hours-of-service management, vehicle inspection and maintenance, audits and penalties, CSA program, and more.
- Simplified Compliance: Breaks down complex FMCSA regulations and compliance information into plain English, offering added context, best practices, background info, risk-management tips, a Q&A guide, and key insights for easier understanding.
- Specifications: Loose-leaf, 3-ring bound, 950+ pages.
- Published Every 6 Months: J. J. Keller ensures up-to-date compliance guidance with new releases every 6 months.
In FAQ 248, OFAC gives 50 as an example: a threshold of 50 returns names the tool deems at least 50% similar under its matching logic. That is a similarity score, not a 50% chance that the names refer to the same party. The example is not a recommendation to use 50 as a general operating threshold. OFAC FAQ 248
Set and review thresholds as part of the organization’s documented screening process, taking its risk assessment and the purpose of the search into account. The right balance depends on the organization and the specific facts, rather than on a score that OFAC endorses for all users.
Free tools Windows power users keep installed
One-click scans. No signup required.
Rank #3
How to investigate a potential match
Treat a name alert as a prompt to investigate, not as a final determination. OFAC advises users to compare the complete list entry with available information about the customer or transaction. The relevant details depend on the parties and records involved; they can include date of birth, identification numbers, nationality, location and other identifiers. OFAC notes that many potential matches identified through screening are false positives. OFAC FAQ 5
- Open the full list entry. Review the listed name and other information in the record rather than relying on the search score alone.
- Compare available identifiers. Check the entry against the customer or transaction information your organization has, including applicable dates of birth, ID numbers, nationality and location.
- Assess the details together. Apply your organization’s established procedures to the similarities and differences; do not treat a single name score as proof of identity.
Why aliases can make results noisier
Some list entries include weak aliases—broad or generic names that can generate many false hits in computer-based screening. OFAC says a weak alias may still help confirm a possible match when other identifying information is present. Consider the alias alongside the rest of the entry rather than treating it as decisive by itself. OFAC FAQ 122
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.When a public search may not be enough
OFAC says some businesses may consider commercially available screening packages depending on their scale, sophistication and risk profile. This is a general option, not an endorsement of a specific vendor. OFAC FAQ 445
Whichever screening method an organization uses, consult current OFAC lists and follow its applicable procedures. List contents change, and the public search score alone does not establish whether a party is sanctioned.
Quick wins for a faster PC:
Clear out junk files and repair common Windows errorsFree Scan →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Repair Windows errors before they cause bigger problemsFix Now →Quick Recap
Best Value
- Hazmat book provides a vital on-the-road reference for truck drivers involved in transportation of hazardous materials.
- Hazmat training book improves hazardous materials awareness and operations by addressing the "who, what, when, where, why, and how-to" of hazardous material transport.
- Provides practical information drivers can use every day to help them stay safe while transporting hazmat.
- Offers critical information on hazmat transportation including required credentials & documentation; accepting loads; driving with hazardous materials; roadside inspections; delivering the load; post-delivery duties; and hazmat transportation FAQs in every chapter.
- 7" x 5" English spiral bound handbook with 192 pages.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
