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You usually pay 2 types of National Insurance if you’re self-employed:
You work out your profits by deducting your expenses from your self-employed income.
You can see National Insurance rates for past tax years.
Most people pay Class 2 and Class 4 National Insurance through Self Assessment.
You must tell HM Revenue and Customs (HMRC) when you become self-employed as a sole trader or as a partnership.
Some self-employed people do not pay National Insurance through Self Assessment, but may want to pay voluntary contributions. These are:
Don’t include personal or financial information like your National Insurance number or credit card details.
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