Anyone with an old paper £10 note will need to spend the cash by the end of 1 March, the Bank of England has confirmed.
If you still have the old tenner past this date the Bank of England, in the City of London, will swap your out-of-date paper for a crisp, new plastic £10 note featuring author Jane Austin.
The Bank introduced the paper £10 note featuring naturalist Charles Darwin on November 7, 2000.
The Bank of England has highlighted that it will continue to exchange them after the cut-off date.
The new, plastic tenner, which features Jane Austen, went into circulation in mid-September.
They will feature quotes made by Austen, such as: "I declare after all there is no enjoyment like reading!" from Pride and Prejudice, as well as her initials.
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The foil image over the see-through window is Winchester Cathedral, where Austen was buried in 1817.
Around 55% of the £10 notes in circulation are made from polymer, while 359 million are paper.
The new note is also the first Bank of England note which helps blind and partially sighted users with an identifiable raised print in the top left corner.
Beneath this image is Godmersham Park House, the estate owned by Austen's brother.
But the new notes have not been introduced without problems after vegans, Hindus and Sikhs complained they contain tallow, a substance derived from animal fat.
Here is a video explaining the security measures on the new polymer note.