Skip to main content
PaySlipIQ
CD1

Tax Code CD1 Explained

Welsh additional rate (45%) on all income

CD1Welsh Additional

What does CD1 mean?

All income from this employment taxed at Welsh additional rate of 45%. Currently identical in effect to D1.

Annual tax-free allowance

£0

💡

Example

A Welsh additional-rate taxpayer with a second income source.

Need a deeper decode?

Open the interactive Tax Code Checker

Type any UK tax code (including S/C prefixes for Scotland and Wales, and W1/M1/X markers) and get the personal allowance, marginal rate, and band breakdown.

Tax Code Checker

Is your tax code being applied correctly?

Upload a photo of your payslip and we will check your deductions against HMRC 2026/27 rates.

Check My Payslip

Disclaimer: PayslipIQ provides educational guidance only. It is not financial, tax, or legal advice. Figures are estimates based on the data you entered. Always verify against your employer's payroll, your HMRC personal tax account, or a qualified adviser before making decisions.

Other common tax codes