This document discusses international guidelines on transfer pricing documentation from the OECD and PATA.
The key points from the OECD guidelines are that taxpayers should make reasonable efforts to prepare documentation demonstrating their compliance with the arm's length principle. Tax authorities can request this documentation but should balance documentation needs with taxpayer costs and burdens. Cooperation between taxpayers and authorities is encouraged.
The PATA guidelines provide harmonized documentation procedures for some countries. They require reasonable efforts to establish arm's length prices, contemporaneous documentation of compliance efforts, and timely production of documentation upon request. However, the PATA guidelines have been criticized for potentially imposing higher documentation requirements than individual countries.