How much can I earn before paying higher rate tax ??

ABN

Assuming the follow figures simplified to make the question easier

Interest from savings £12,000 (a) before tax £10,000 (b) after tax
Personal Allowance £5000 (c)
Additional job related allowance £6000 (d)
Higher Tax band starting at £34,000

Would it be
£34,000 + £5000 + £6000 - £12,000 = £33,000
or
£34,000 + £5000 + £6000 - £10,000 = £35,000
or
£34,000 + £5000 - £10,000 = £31,000

Thanks

P.S. When calculation income from interest do I need to make any allowance for ISA's PEP's etc or are they exempt from the calculation?

jem16

As long as (d) is definitely an allowance and not a deduction, it would be your first calculation.

Gross interest is added to your salary for a total of taxable income. Also added to this would be dividend payments if you have any.

ISAs/PEPs can be completely ignored.