MtdLossClaimDto

One loss claim — what HMRC are being asked to do with a loss (to 2025-26).

Properties

Name	Type	Description
claimId	string	HMRC's identifier for the claim.
HMRC's identifier for the claim.
businessId	string	HMRC's identifier for the income source the claim is made against.
HMRC's identifier for the income source the claim is made against.
typeOfLoss	enum	Unknown SelfEmployment SelfEmploymentClass4 UkPropertyFhl UkProperty ForeignPropertyFhlEea ForeignProperty
Unknown SelfEmployment SelfEmploymentClass4 UkPropertyFhl UkProperty ForeignPropertyFhlEea ForeignProperty
typeOfClaim	enum	Unknown CarryForward CarrySideways CarrySidewaysFhl CarryForwardToCarrySideways
Unknown CarryForward CarrySideways CarrySidewaysFhl CarryForwardToCarrySideways
taxYearClaimedFor	string	The tax year the claim is made for, e.g. 2025-26.
The tax year the claim is made for, e.g. 2025-26.
sequence	integer	Where the claim sits in the order HMRC apply carry-sideways claims, 1–99. Null for a claim type HMRC do not sequence.
Where the claim sits in the order HMRC apply carry-sideways claims, 1–99. Null for a claim type HMRC do not sequence.
lastModified	string	When HMRC created or last changed the claim. HMRC's own stamp.
When HMRC created or last changed the claim. HMRC's own stamp.
lastAction	MtdSubmissionStampDto

{
  "claimId": "string",
  "businessId": "string",
  "typeOfLoss": "Unknown",
  "typeOfClaim": "Unknown",
  "taxYearClaimedFor": "string"
}