I have a checkout page that needs to calculate the tax rate. I already have a page that is setup and working with the right tax amount and this is a separate page, so it should be easy to fix this on the new page. $10 for this simple task.
I am an chartered Accountant (well recognised degree in india in this type of field). I have more than 3 year experience in the relevant field. I can assure you will get the quality work done in time more appropriately and efficiently.