Closing a Business and surrendering a liquor sales licence
Under Ontario Regulation 719(56(1)) of the Liquor Licence Act, unless you are transferring the liquor sales licence, you must surrender the licence back to the Registrar of Alcohol and Gaming when you stop operating your business.
To do this, complete the 
Voluntary Surrender form and send it and the liquor sales licence to the AGCO. If you do not surrender your licence, a revocation of licence will be noted on your record.