Understanding 25% TFLS

Dazed_and_C0nfused

squirrelpie said:

Dazed_and_C0nfused said:

That guidance is poor (wrong) as 1257L is the emergency tax code.

The W1/M1/X element isn't part of the tax code, it identifies if the code is being operated on a cumulative or non cumulative (often referred to as week 1/month1) basis.

Well other pages in the same guide use the same terminology, so unless you can point to a better reference, I'll have to stick to my view.

The P9X, a HMRC rather than gov.uk document explains it.

https://www.gov.uk/government/publications/p9x-tax-codes