FBR has developed an IT-Product for Sales Tax called “Computerized Risk-Based Evaluation of Sales Tax” (CREST). If you are registered for Sales Tax, this system can help you. Please view www.e.fbr.gov.pk through your login. This is the same login that you use to e-file sales tax returns.This CREST system checks information from sales tax returns, customs’ import and export data and alerts sales tax payers of anomalies.If you receive alerts from CREST in your e-mail, you can confirm/deny the suspected transaction by using the CREST. This action helps your registration number from being misused by someone else.