Raiffeisen Bank International (RBI) needs to reevaluate its operations in Romania after the government imposed a new bank tax in a last-minute legislation in December, its chief executive said.

Raiffeisen holds 8.97 billion Euro, or around six percent of its assets, in the country. “We will need to reevaluate Romania,” Johann Strobl said in the lender’s annual report, Reuters reads.

The lender said the impact of the new tax could not be quantified yet.