Its Director Datuk Dr Janathan Kandok said the companies owed tax arrears totalling more than RM8.01 million over the past five years.
He said companies that failed to clear their taxes during the accounts receivable operation (Ops ABT) period over two months ending Aug 29 would face legal action.
"The Customs Department will not compromise with licence holders who did not clear their taxes after being allowed to stagger their payment," he told reporters after launching the operation at Wisma Kastam, here, Tuesday.
Janathan said Customs was targeting to collect RM892 million in taxes to achieve the department's key performance indicator (KPI) this year.
Earlier in his speech, Janathan said Ops ABT was held for the first time to check tax evasion and to meet its annual tax collection target.
He advised companies in the State to clear their taxes on time to avoid facing unnecessary action.