is gift aid and EIS income tax reliefrelief

I want to calculate if I have enough income tax liability to get full relief for EIS. Calculating income tax is easy enough but I wonder if I am supposed to subtract 25% of my Gift aid payments from the final figure, as this amount is presumably removed from my tax payments?

Hi ,
 

The amount of gift aid declared, increases the basic rate band, to give higher rate and additional rate tax relief, where tax is otherwise payable at these higher rates.  EIS relief is 30% of your investment and is deducted from the tax payable. Thank you .