The GATCA app is an essential tool for responsible officers, relationship managers, and financial services professionals responsible for ensuring tax compliance.

If your firm is affected by detection and deterrence of tax evasion regulations such as FATCA, the OECD’s CRS and Automatic Exchange of Information, the US QI and NQI regulations, or Base Erosion and Profit Shifting regulations (BEPS), then the GATCA app is a vital tool for your compliance armoury.

We have brought together documents from a number of different public domain sources and added value through expert curation - giving the documents standard file names and publication dates, arranging them into folders according to jurisdiction, and providing practical tools to support your compliance programme.

Features include:


The GATCA app includes a comprehensive library of public domain documents that have been curated by TConsult to help to explain regulatory compliance obligations in a number of different jurisdictions, including the EU, OECD, US and UK.

The documents are organised into an easily navigable folder structure, and have smart file names to help you quickly identify the document you need.

Documents featured in the app include, but are not limited to:

- Announcements
- Notices
- Bills
- Statutory Instruments
- Regulation
- Competent Authority Agreements
- Intergovernmental Agreements
- FFI Lists
- Forms
- Revenue Procedures
- Instructions
- Guidance Notes
- Latest Lawsuits
- Publications
- Technical Specifications


Search for the document you need by title or keyword.


Carry all the relevant documentation around with you on your smartphone or tablet, and access it even when there is no internet connection available.


Receive new documents and updates every quarter. For more regular updates, please subscribe to our online GATCA Resource Library at


Receive new articles and podcasts containing industry analysis from trusted sources.


Use practical tools to support your work and planning, including the “Is Your Client An American?” test and event timers.

Watch the video walkthrough here:

Visit for further information about GATCA and the GATCA Resource Library.
If you have any questions or feedback about the app, please email

What's New

Version 3.0.6

New Documents:
- OECD AEoI Pilot Project Briefing
- OECD Model Protocol under TIEA
- OECD Agreement on Exchange of Information Template
- Publication 1187 1042-S Reporting
- Revenue Procedure 2017-21 - New WFP WFT Agreement
- CAA Vietnam
- Federal Register FATCA Regulations to Withholding of Tax on US Sourced Income
- Federal Register Dividend Equivalents

New IGAs:
- IGA Anguilla
- IGA Bahrain
- IGA Greece
- IGA Greenland
- IGA Grenada
- IGA Macao
- IGA Taiwan
- IGA Ukraine

New links:
- QI Management System FAQs
- List of Approved KYC Rules

Updated Docs:
- MCAA Signatories List
- Form 1042
- Form 1042-S
- Form 1099-MISC
- Publication 515: Withholding on Nonresident Aliens & Foreign Entities 2017

Ratings and Reviews



This is such a great app and well worth the £1.99 price tag. I would only suggest a few enhancements to make it more useful than it already is; i) allow the user to bookmark certain pages of the documents available and ii) allow the user to define the page they want to go to rather than scroll through the entire document. I would definitely recommend this app for anyone involved in a FATCA project, many thanks.


TConsult Ltd.
520.9 MB
Requires iOS 8.2 or later. Compatible with iPhone, iPad and iPod touch.
Age Rating
Rated 4+
© 2016 TConsult Ltd


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.