The Revenue Department has expressed "serious concern" over delay in migration of excise and service tax assessees to the new GST regime and asked field officers to complete the process by March 31.

The Central Board of Excise and Customs, the apex policy making body for indirect taxes, in a communication to the field formations has asked the Zonal Chief Commissioners to submit a weekly progress report beginning March 6.

In early January, the CBEC had asked field officers to migrate all existing central excise/service tax assessees to GST portal by January 31, 2017.

"It is a matter of serious concern, that while the migration figure is in range of 50 to 90 per cent for majority of States/Union Territories, the migration with respect of central excise/service tax assessees through CBEC is a paltry 2.94 per cent in central excise and 8.22 per cent in service tax," the CBEC said.

For central excise taxpayers, the process of migration to GST had started since January 20, while for service tax assessees, it begun on February 9.

The CBEC has asked field officers to contact assessees via phone/email who are yet to activate their provisional GST IDs and encourage them to migrate without further delay.

"I would urge all field formations to conduct more seminars and training in local language to encourage taxpayers to migrate early by March 31. Advertisements may also be brought out in local newspapers, TV channels, FM radio channels in vernacular language to ensure greater reach," the CBEC said.

The government plans to roll out GST from July 1 and in the run up to the new indirect tax regime, it has started migrating excise, service tax and VAT assessees to the new tax payment portal. As many as 80 lakh such assessees are to be migrated to the GST portal.

Permanent Account Number is mandatory for migration to GST. If an existing excise or service tax asseessee does not have a PAN, then the same has to be obtained from the income tax department.

"The progress of migration to GST is being closely monitored at the highest level. I would urge you to bestow your personal attention and ensure speedy and smooth migration of the remaining excise/service tax asseesses without further delay," CBEC said.

The CBEC has also started 24X7 help desk to help assessees migrate to the new portal.

This migration process is for excise or service taxpayers who are not getting migrated through state VAT.