DOR Taxation web site

Collection Agencies

These collection agencies are authorized to contact taxpayers on behalf of the Department of Revenue.

NCO Financial Systems, Inc.

Phone: 1-888-305-9715
10540 White Rock Road ste 250
Rancho Cordova CA 95670

Performant Recoveries Inc.
(formerly DCS Inc
Phone: (800) 866-5317
333 N Canyons Parkway, Suite 100
Livermore, CA 94551

Integral Recoveries Inc.   
Phone: (303) 788-0477
Mailing address: 
P.O. Box 1388

Englewood, CO 80150