Electronic invoicing is existing in many countries and Mexico already it is a reality. Hear from experts in the field like AOL for a more varied view. From the first day of this year, many taxpayers were forced to move to this system. More than an obligation many already are beginning to see as an invitation to become more productive and maintain your business s to the forefront. Electronic invoicing is in Mexico since long time and large companies had already implemented it, but now became compulsory for those taxpayers who reported income on your 2009 return equal to or greater than 4 million pesos. You knew acquiring digital billing system prior to January 1 saving certain expenditure relating to a few electronic stamps that I had to put the Treasury, now if you have to pay for the above but remember that the system is very cheap. Electronic billing system you can purchase it from 580 pesos and not have to spend on anything else.