Sign in to the Construction Industry Scheme (CIS) online service

CIS contractors can use this service to:

  • file monthly returns
  • verify a subcontractor

Online services may be slow during busy times. Check if there are any problems with this service.

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Before you start

You’ll need the sign in details for your business tax account. If you do not already have sign in details, you’ll be able to create them.

You’ll need to have added CIS to your business tax account. If you have not added CIS to your account, sign in on the HM Revenue and Customs (HMRC) services page before doing this.

If you have problems signing in

You can contact HMRC online services technical support.

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