A reasonable excuse set out by HMRC is something that stopped you meeting a tax obligation that you took reasonable care to meet, for example:
- your partner or another close relative died shortly before the tax return or payment deadline
- you had an unexpected stay in hospital that prevented you from dealing with your tax affairs
- you had a serious or life-threatening illness
- your computer or software failed just before or while you were preparing your online return
- service issues with HM Revenue and Customs (HMRC) online services
- a fire, flood or theft prevented you from completing your tax return
- postal delays that you could not have predicted
- delays related to a disability you have
You must send your return or payment as soon as possible after your reasonable excuse is resolved.
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