S is representative of Scotland, while C represents Cymru – Wales, to show people here their tax jurisdiction.

Most other tax codes will begin with a series of numbers, but there are common patterns to look out for. 

Martin cited an example of the most common tax code – 1257L – explaining what it means.

If a person adds a zero onto the end of the number, they will get 12,570.

In Great British Pounds, this is a typical Personal Allowance, the amount a person can earn tax-free.