Can i ask a (probably) very stupid question? Other than tax at source (which I pay) is there a further "Canton Tax" to pay, similar to UK council tax?

A colleague, who is also English, recently told me that he had heard of a canton tax which we will be notified about in June time, and would have to pay to the canton over three installments?

Does anyone have the foggiest what this is, how much it costs etc. We live in Oerlikon.

Thanks.