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uk tax - can i claim expenses against a different tax year?
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in some circumstances losses from self-employment can be offset against total income and/or capital gains. if this applies to you may be able to claim back some of the tax taken by paye from your day job.  you can also to some extent carry the loss backwards into previous tax years or forward into the next one if you can't use it fully this year. hmrc have some information available on the current rules: when you can claim losses  you can claim: but you can’t claim:
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