I agree but what I fail to understand is the tax paid last half...

I agree but what I fail to understand is the tax paid last half year.
Can any body explain this from their last half yearly report...

"Income Tax
The Group’s effective income tax rate of over 300% is due primarily to the following three items:
• In the parent company the interest expense on the convertible notes of $1,256,000 is not deductible for tax purposes;
• Also in the parent company the amortisation of the capitalised costs associated with the convertible note raise is not deductible for tax purposes; and
• In Malaysia, although we have been granted Pioneer Tax Status which provides us relief from income tax, this relief only applies to operating income not interest income. During the half year we have received over $500,000 in interest income which is fully taxable."

I know they are explaining it in the provided quote but I still don't get it.
Cheers