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Provide trained assessors with a structured methodology—the Tax Administration Diagnostic Assessment Tool (TADAT)—to undertake an objective performance assessment of a country’s tax administration system.

Establish a set of quality standards to be applied in conducting an assessment and preparing a PAR.

Ensure consistency of approach amongst assessors.

The field guide is organized around the nine Performance Outcome Areas (POAs) of the TADAT framework, with each section detailing the desired outcomes, international good practices, and the indicators and scoring methods used to assess performance.

It includes a checklist of guiding questions for assessors—meant to be flexible and supplemented by professional judgment—as well as examples of evidence required to support scores, such as policy documents, data, and field observations.

A performance measurement matrix outlines criteria for scoring, again requiring assessor discretion in complex cases.

Appendices provide essential tools and templates, including a glossary, pre-assessment questionnaire, fieldwork schedule, reporting formats, evaluation forms, and a description of the quality review process.

TADAT FIELD GUIDE

FIELD GUIDE 2019

TADAT NATIONAL FIELD GUIDE - APRIL 2019

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FIELD GUIDE 2015

TADAT NATIONAL FIELD GUIDE -NOV 2015

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SUBNATIONAL FIELD GUIDE 2019

TADAT SUBNATIONAL FIELD GUIDE -NOV 2019

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TADAT FIELD GUIDE APPLICATION NOTES

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Publications and Other  Documents

Welcome to the premier hub for all things TADAT — the Tax Administration Diagnostic Assessment Tool! Dive into a dynamic collection of expertly curated documents and publications designed to enhance your understanding and application of TADAT’s methodologies. Whether you are a tax professional, policymaker, or researcher, this page opens the door to invaluable resources that help unravel the complexities of tax administration performance around the globe. Explore comprehensive reports, practical guidance notes, and insightful case studies that empower you to drive reforms and achieve superior tax system outcomes.

 

Our extensive archive is continuously updated with the latest research, tools, and analytical frameworks crafted by leading experts. Engage with a vibrant knowledge base that supports transparency, efficiency, and accountability in tax institutions worldwide. Here, you will find the critical materials to inform decisions, benchmark progress, and foster collaboration on tax administration improvements. Embark on your journey to mastery in tax diagnostics and unlock the potential to transform fiscal policy and governance through TADAT's proven approach.

TADAT 10 Year Report 

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TADAT Program Document

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