Customers have just two weeks to use £20 and £50 paper notes before they cease to be legal tender at the end of September.
The notes are the latest paper versions to be withdrawn from circulation. From October 1, businesses in Scotland can refuse to accept the paper banknotes, although people will still be able to exchange them at banks.
The September 30 deadline was announced by the Committee of Scottish Bankers (CSCB) on behalf of the three banks that issue notes in Scotland - Royal Bank of Scotland, Clydesdale Bank, and Bank of Scotland.