Electronic Invoice
The SAT reported that all companies with revenues greater than 4 million pesos debderán to adapt the model of electronic billing, the choices for this theme are:
CFD
As currently known, it is understood that those joining before 31 December may continue to use the scheme
Pre Printed Forms
by printers appointed, these will continue until the end of his term which is 2 years to complete its effect on taxpayer must rise to electronic billing.
MICRO E
is a free tool that gives the SAT so that they can perform well as the processes of payroll, income transfers also CFD "only applies to companies whose income is not more than 4 million pesos.
New paper bill
From 1 January cuaquier taxpayer may apply directly SAT folios and hologram for use in printed invoices under $ 2,000.00 for It uses electronic signatures. The taxpayer can do and be independent of the approved printers.
CFDI (Internet Digital Proof Fiscal 2011)
This is a new model that is implemented the SAT, definitions according to the operating model is as follows:
is generated CFD where now further and become optional fields below.
· Folio bill (this is to obtain the ERP)
· series (optional)
· Exchange ( Optional field to set the exchange rate autilizar)
· Currency (Field Options to express the currency)
XML is generated and signed with the digital seal certificate of the company.
be sent to a CAP (Certified Authorized Provider)
What is a PAC
The rules state that a PAC is a company that is authorized by the SAT to make the following requirements:
· validate the CFD (XML).
· validate the validity of the digital seal (the issuer).
· Integrating a ring.
· Back to Taxpayer the Ringer.
· the SAT online Send all invoices stamped.
THE PAC request the Certificate of Seal SAT Digital to integrate the ring of CFDI, SAT mentioned that this service is free of charge by the PAC for any company.
Containing Ringing
· version
· UUID
· Date Ringing
· CFD Seal
· SAT Certificate Number
The result of the validation of a CFDI, allocation of fiscal and incorporation folio digital SAT seal means such as stamp duty Digital. The digital tax folio will be referred to as the UUID
This information will be returned to the taxpayer to integrate the CFD which has the facility to integrate ADDENDA that you are using.
CANCELED AS A CFDI
now CFDI To cancel a communication is directly with the SAT where you can receive ranges from 0 - 500 CFDI for cancellation, that data must carry the cancellation of CFDI:
· emitter RFC
· Date
· Folios to cancel (0-500) Ringer.
· Digital Label
To this communication is via Web Services using XML-Signature.
For CFDI printed representation of change vs. the CFD, where they integrate new components and eliminating others. It integrates two-dimensional code (QR Code)
PAC How many exist today?
At September 8, 2010 yet there is no PAC only exist PACFD will have to adapt the CAP model by April 30, 2011, if not to its validity as PACFD only exist until the second half of 2011.
That means being a PAC, at the process level is to have a technological infrastructure as do Banks today with your online transactions, validations pass the SAT and to pay a deposit of over one million pesos. Besides not being the center of processing with gas stations or places of high risk.
mperez@facturasat.com 
