I am wondering if there is a way to add prices including VAT.

When I add a new subscription plan I want to be able to add the total price including VAT. I have a subscription plan that is €15/pm incl VAT. To add this excluding VAT is an odd number like €12.19512195 but Zoho rounds it to €12.20 which gives a total with VAT (23%) of €15.01. 

I need the total to be €15.00 and would love to be able to enter the price including VAT which would be much simpler.