The OECD's Common Transmission System
The OECD created the Common Transmission System (CTS) to exchange CRS data. The CTS system is not a data warehouse, rather it works like a traffic policeman. Local tax authorities receive CRS data from their regulated Financial Institutions, package it for exchange and send it to the CTS. The CTS checks the security protocols and passes the data onto the destination tax authority.
Once the OECD built the CTS, they realized that it could be used to exchange other types of data between tax authorities – specifically data to be exchanged for the OECD’s Base Erosion and Profit Shifting (BEPS) initiative. They expanded CTS to include the exchange of Country-by-Country data (BEPS Action Item 13) and Exchange of Tax Rulings (BEPS Action Item 5).
Just recently, the OECD has announced CTS version 2.0, which will expand the exchange of information from 3 data types to 25.
|
Code |
Description |
Type (XML, Free Form) |
|
CRS |
Common Reporting Standard |
XML |
|
CbC |
County-by-Country |
XML |
|
ETR |
Exchange of Tax Rulings |
XML |
|
MDR |
Mandatory Disclosure Rules (EU DAC-6) |
XML |
|
NTJ |
Forum on Harmful Tax Practices Substantial Activities in No or Nominal Tax Jurisdictions |
XML |
|
CDQ |
CRS Data Quality |
XML |
|
GIG |
Gig economy |
XML |
|
TRACE |
Treaty Relief and Compliance Enhancement (authorized intermediary data exchange) |
XML |
|
Other |
Other exchanges under international tax agreements |
? |
|
DTCAEOI |
Dual Tax Conventions Data (Automatic Exchange of Information) |
FF |
|
EOIRFreeDT |
Direct Tax - Free Form format (Exchange of Information on Request) |
FF |
|
EOIRFreeIT |
Indirect Tax - Free Form format (EOIR) |
FF |
|
EOIRFreeTCR |
Tax Collection and Recover - Free Form format (EIOR) |
FF |
|
EOIRStructDT |
Direct Tax - Structured E-forms format (EOIR) |
FF |
|
EOIRStructIT |
Indirect Tax - Structured E-forms format (EOIR) |
FF |
|
EOIRStructTCR |
Tax Collection and Recovery - Structured E-forms format (EOIR) |
FF |
|
SponFreeDT |
Direct Tax – Spontaneous exchanges free format |
FF |
|
SponFreeIT |
Indirect Tax – Spontaneous exchanges free format |
FF |
|
SponFreeTCR |
Tax Collection and Recovery – Spontaneous exchanges free format |
FF |
|
SponStructDT |
Direct Tax – Spontaneous exchange of Structured E-Forms format |
FF |
|
SponStructIT |
Indirect Tax – Spontaneous exchange of Structured E-Forms format |
FF |
|
SponStructTCR |
Tax Collection and Recovery – Spontaneous exchange of Struct E-Forms format |
FF |
|
JointAudits |
Joint Audits |
FF |
|
JITSIC |
Joint International Taskforce on Shared Intelligence and Collaboration |
FF |
|
MAP |
Mutual Agreement Procedure (dispute resolution) |
FF |
CTS 2.0 is expected to go into testing in October 2020 and into production at the beginning of March 2021.
