The Netherlands' Council of State is considering the proposed law and will give an advisory opinion as to whether it is legal. It has not set a date for its decision.
Unilever said it did not think the Green Left plan was legal.
"Nevertheless, if the bill were enacted in its present form, the boards believe that proceeding with unification, if it resulted in an exit tax charge of some 11 billion euros, would not be in the best interests of Unilever," it said.
The remarks were published on Monday as part of a shareholders' circular ahead of a Sept. 21 extraordinary meeting in Rotterdam to approve the unification.
Taxes have played a pivotal role in Unilever's decision-making as it tries to simpify its dual structure: it had initially decided to unify headquarters in Rotterdam, in 2018.
But it cancelled those plans after the Dutch government decided to retain a 15% withholding tax on dividends.
Britain does not impose a withholding tax on dividends.
(Reporting by Toby Sterling; editing by Barbara Lewis)
(Only the headline and picture of this report may have been reworked by the Business Standard staff; the rest of the content is auto-generated from a syndicated feed.)
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