Yes! Provided you received the letter from HMRC after purchasing your policy, and you’re not claiming for an ongoing investigation, we’ll cover you regardless of the tax year for which the enquiry relates.
Tax Enquiry Insurance is a ‘claims made’ insurance policy. This means that your policy will react if you receive an enquiry letter during the period of your insurance, regardless of the tax years HMRC wish to investigate.
So, if you were to receive an enquiry letter from HMRC relating to a tax return from years ago which predates your insurance policy, you’re still covered.