Yes, the CRA requires a few steps to close a business. The first thing you need to do is file any GST/HST tax returns that have not been filed. This means paying any outstanding balance up to the same day your business closes.
The second step is closing your GST/HST account. In order to close it, you must fill out Form RC145, Request to close business number accounts (BN) and mail it to the tax services office that serves you. Alternatively you may call the Canada Revenue Agency Business Window at 1-800-959-5525.
In the case that you have property owned by the business, the CRA will assume at the time of closure that the property was sold and priced according to its basic tax content and that GST/HST was obtained. Please note that the final GST/HST return must include this amount.