The association of private sector employers said VAT collected for August 2021 should be paid to FIRS.
Mr Akeredolu said Mr Umahi could say whatever he likes, that in Asaba, all the Southern governors agreed on the issue.
The private businesses collective says it was in quandary amid the legal tussle and controversy surrounding payment and collection of VAT.
Mr Masari said other states provide the bulk of the market for Lagos and Rivers economic growth.
The vice president listed the types of tax as personal income tax, social or philanthropy tax, and civic tax.
Rivers wants the Supreme Court to order that the substantive appeal by FIRS be heard and determined by a fresh panel of the Court of Appeal.
The lawmakers described passage of the VAT bill as financial restructuring.
Governor Yahaya Bello, through his information commissioner, Kingsley Fanwo, lambasted his colleagues for pushing for independent collection of VAT.
The order was issued by Justice Haruna Tsanami on Friday.
Lagos State Governor Babajide Sanwo-Olu has signed into law the State VAT Bill as passed by the House of Assembly.
