Car allowance - reduce tax liability?

[Roy is Right]

Hi

I have a car allowance from my company of say €20000 per annum, paid monthly in my salary at the rate of €1666 per month gross.
I do not get paid a mileage rate or other motoring expenses and use my own car for business trips.
While I understand this is fully taxable, I believe there is some way of reducing my tax liability by providing a log of my business journeys assigning a portion of my miles and benefit to business related trips.

Can anyone shed any light on this?

Thanks

 

[Graham_07]

If you go down this page to part headed "Expenses claims submitted to Revenue". There is a Revenue claim form for what you refer to.

 

[Roy is Right]

Many thanks