"The exchange will be possible at a rounded, official ... exchange rate," the bank said in a statement.
Last week the bank said it was cooperating with the country's largest lender, PKO BP, to allow refugees who have fled Ukraine for Poland to convert hryvnia.
Many refugees are struggling to buy even basic necessities because their savings in hryvnia are non-convertible across most of Europe, meaning they have no way to exchange them at reasonable rates.
($1 = 29.2500 hryvnias)
(Reporting by Anna Koper; Editing by Chris Reese)