In case of any difficulty in accessing the ACES Application, the assessees can seek help of the ACES Service Desk by sending e-mail to aces.servicedesk@icegate.gov.in or calling up National Toll-free number 1800 425 4251. The ACES Service Desk functions on working days from Monday to Friday between 9 AM and 7 PM and on Saturdays between 9 AM to 2.30 PM. However, the Service Desk will remain open from 9AM to 7PM on all Saturdays in the month of April, 2015 and on last Sunday of the return filing period i.e. on 19-4-2015 to ensure smooth filing of returns.

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