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HMRC Self Assessment API

How to find out when the 18 month authorisation period expires

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We have authorised the HMRC SA API within our personal tax software but want to know when the expiry date is. Unfortunately we did not record the authorisation date, and the software provider has confirmed the data is not held within the software.

Does ayone know if the Online Services Helpdesk can provide this information?

Obviously one option is to simply re-authorise the API within the software and record the date, but we would prefer not to do this during the tax return "season" if at all possible.

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