L – Basic personal allowance for a person born after April 5, 1948
0T – No personal abatement
BR – All income from this source is taxed at the basic rate
DO – All income from this source is taxed at the highest rate
D1 – All income from this source is taxed at the additional rate
K – Total deductions exceed their allowances
M – Marriage allowance receiving 10% of their spouse’s or civil partner’s personal allowance
N – Marriage Allowance providing 10% of their unused personal allowance to their spouse or civil partner
NT – No tax is due on this income
C – Paying income tax in Wales
S – Pay the Scottish rate of income tax in Scotland
T – The tax office should review the tax code or keep personal data confidential
W1 or M1 – Emergency tax codes for the first week or the first month depending on when a person is paid.
Taxpayers can check their code on their personal tax account on the government’s GOV.UK website.
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