What are the exceptions to the Child Tax Credit and UC two-child limit in the UK?

Full answer

The two-child limit (officially the two-child restriction on the child element in Universal Credit and Child Tax Credit) was introduced in April 2017. It means that families who have a third or subsequent child born on or after 6 April 2017 do not receive the UC child element (worth around GBP 269/month per child in 2026/27) or the equivalent CTC child element for the additional child. Children born before 6 April 2017 Children born before this date are grandfathered -- families continue to receive the child element for all children born before 6 April 2017, regardless of the limit. Exceptions to the two-child limit 1. Multiple birth exception: if the third or subsequent child is part of a multiple birth (twins, triplets etc.) at the same delivery as the second child, the additional children from that birth are exempt. For example, if your second child is born alongside a twin, both twins receive the child element. 2. Non-consensual conception exception: if the third or subsequent child was conceived as a result of rape or other non-consensual sexual act, the exception applies. This is the most sensitive exception and requires supporting evidence from a third party (a professional such as a doctor, social worker, police officer or domestic violence support worker) on form UC121. HMRC and DWP do not contact the named third-party professional without consent. 3. Adoption from local authority care: children adopted from care via a local authority are exempt from the limit. 4. Non-consensual conception in a formal kinship or friend/family care arrangement: children who are looked-after by friends or family (kinship carers) under a court order (Special Guardianship Order or Child Arrangements Order) are exempt where the carer is not the child's parent. How to claim an exception Exceptions are not applied automatically. You must complete and submit form UC121 (UC) or the relevant CTC exception form and provide supporting evidence. Claims can be made at any time -- there is no deadline after which the exception cannot be applied. Impact of exceptions For each child that qualifies for an exception, the full child element is reinstated in the UC calculation. Families with a severely disabled child also receive the disabled child element, which is separate from the two-child limit and not affected by it. Policy context The two-child limit was politically contested. Opposition parties and several charities have called for its abolition. As of 2026 it remains in force.

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