If you need to tell HMRC that you’re self-employed using a CWF1 Form, the deadline is 5th October in your second tax year. Make sure you register in enough time to submit your Self Assessment tax return to minimise the risk of receiving a penalty for late registration.
What’s the difference between a CWF1 Form and a SA1 Form?
Submitting a SA1 Form signs you up for Self Assessment, but there are lots of different reasons why you might need to register. A CWF1 Form confirms to HMRC that you’re setting up your own business.
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What do I need to include on a CWF1 form?
The form will ask you for your personal details, National Insurance number, and the nature of your self-employed business. This includes the business name you plan to trade under, and the address where the business will operate.