Tax Code Guide
0T-W1
Tax Code 0T W1
What does this code mean?
0T W1 is one of the highest emergency tax situations. You have no Personal Allowance AND tax is calculated non-cumulatively each week. This means all your income is taxed and you do not benefit from cumulative allowance build-up. This can lead to paying significantly more tax than you owe. Contact HMRC or your employer urgently to resolve.
Emergency Tax Warning
This is often an emergency or temporary tax code. You might be paying too much tax while on this code.
Who gets this code?
New starters without a P45 where HMRC has no prior records. This is the most common cause of large emergency tax overpayments.
Is it correct?
Check your latest P45 or Payslip to see if this matches your current situation.