The department said the falling crude oil price is one of reasons behind the reduced tax revenues, as the yearly plan was based on the assumption that oil price was US$60 per barrel.
Besides, the enforcement of several free trade agreements brought down the tax rates on petrol imports from ASEAN and the Republic of Korea, cutting into tax collection.
Lower-than-expected economic and export growth rates are other causes.
As more taxes will be reduced to zero in 2017 and the years after, revenues from import-export tariffs and special consumption taxes are expected to drop further, prompting the sector to look to other sources such as environment taxes and value added tax (VAT).
Le Manh Hung, deputy head of the department’s Import-Export Tax Department, said the VAT rates, which stand at 5% and 10% at the moment, are relatively low in comparison with that in other countries in the region.
He pointed to the need to change the structure of tax collection sources in order to ensure revenues for the State budget.
The customs sector’s revenue mainly comes from import-export tax, special consumption tax, environmental protection tax and VAT.
The sector was assigned to collect VND270 trillion for the State budget in 2016, with VND91 trillion to come from import-export tax, special consumption tax and environmental protection tax, and VND179 trillion from VAT.