The new banknotes and those with Queen Elizabeth II’s image will be in circulation simultaneously.
Charles’s likeness will be seen on the £5, £10, £20, and £50 banknotes.
The new notes will only be issued to replace the worn ones and to satisfy any general rise in demand, under instructions from the royal household.
The strategy seeks to minimize the change’s financial and environmental effects.
Andrew Bailey, governor of the Bank of England, stated: “We are delighted to introduce the new King Charles banknotes.
As the first time we’ve altered the sovereign on our notes, this is a momentous occasion.
Since many people value currency, we are dedicated to continuing to supply banknotes as long as there is a need for them.
“Putting these fresh notes into print is an indication of that dedication.
The King praised the “very well designed” banknotes that bore his face when they were originally introduced to him in April.
In 1960, the £1 note featured the portrait of his mother, Queen Elizabeth II, who became the first sovereign from the United Kingdom to hold this distinction.
The updated banknotes will be available for purchase at specific post office locations.
There are now temporary mechanisms in place from the Bank of England that enable customers to obtain a limited quantity of King Charles III banknotes.