A Cash account is an investment account that can be a great addition to your portfolio if you've maxed out your registered accounts' contribution room. A Cash account is a non-registered account (not registered with the government), which means there are no limits to how much you can deposit and withdraw. However the money you make in the account will be taxable.
Unlike Margin accounts which are also non-registered, Cash accounts do not have the option to borrow money. Therefore, you can invest only with the cash available in your account. This straightforward approach makes a Cash account favorable for people looking to invest securely within their means.