said by Gone:Corporate income taxes - including the provincial portion - are collected by the feds through the CRA, not the province through the Ministry of Finance directly. This is most likely pre-HST PST debts that are being written off since the province has wanted to close those books for the last year and get all those guys transferred into the CRA and get their wages off the provincial ledger.
If only the feds were so lackadaisical about collecting corporate income tax or source deductions.
Corporate Provincial Income Taxes pre-2009 are still the responsibility of the Ministry of Finance (Ontario), those are the unpaid taxes that the AG is referring to in this report. When they transferred most of their staff to CRA, these unpaid files didn't go with then.