I thought your link would have been to an informed source but I see it's to the usual propaganda rag.
The wonderful thing about statistics is they can show you what you want if you choose not to use figures with some integrity.
How about, "Tory Councils fail to look after public funds properly and raise Council Tax higher than well run Councils" is another headline grabber if you wish to interpret the same figures as unhelpfully as the Daily Mail.
The truth is quite straightforward, Council Tax grant from central Government is developed on a needs index but then funds are added to meet the Government of the days policy objectives. The Tories did it when they were in power as they gave support to mainly rural (Tory) Councils.
Unsurprisingly the current Government supports inner city initiatives more strongly than the Tories. It's called funding following policies.