Q: PI Insurance - What is run off cover? How many years should I take out run off cover for? A: If an insured chooses to sell his/her business and retire, then 'run off' cover will indemnify them for any unknown claims arising from mistakes made whilst they were still in business during the period of Run Off Insurance. It does depend upon the retroactive date offered with the policy. It is difficult to suggest the length of time that run off cover ought to be taken out, as it depends upon the Statute of Limitations legislation applying to that particular claim. In some cases, a claim can be brought in excess of 15 years after the mistake occurred.