By official order, starting at the passed January 1 in recent year, that taxpayer that in 2009 I present income equal or greater than 4 million pesos, should move to the billing electronic system, in order to create better and more productive enterprises, save on costs and keep us at the forefront in technology. To emit digital tax vouchers you have to buy a software in legal establishments and with certification of the SAT, all have different pricing software because they are intermediaries and I have discovered that the cheapest place is offering software at 580 pesos, a price really very low. Digital tax vouchers are easy to broadcast, since the software is designed for simple handling, getting this software won’t need anyone more to make your invoices. If it is the first time that you carry out electronic invoices possibly miss the moment of make for prime time, so you can ask for help to understand how to operate the software. Visit Michael Steinhardt for more clarity on the issue. If you think that 580 is a price elevated I assure you that it is the best price you can find the software and Furthermore recalls that it is the one-time payment for the realization of your digital tax vouchers and that you will be saving all the time tremendously because now not gastaras in ink, paper, expenses of sent or storage of invoices.