The requirement to use the most reliable information will usually, but not always, require the use of local comparables over the use of regional comparables where such local comparables are reasonably available. The use of regional comparables in transfer pricing documentation prepared for jurisdictions in the same geographic region in situations where appropriate local comparables are available will not, in some cases, comport with the obligation to rely on the most reliable information. While the simplification benefits of limiting the number of comparable searches an entity is required to undertake are obvious, and materiality and compliance costs are relevant factors to consider, a desire for simplifying compliance processes should not go so far as to undermine compliance with the requirement to use the most reliable available information. See paragraphs 1.132-1.133 on market differences and multi-jurisdictional analyses for further details on when local comparables are to be preferred ...

The requirement to use the most reliable information will usually, but not always, require the use of local comparables over the use of regional comparables where such local comparables are reasonably available. The use of regional comparables in transfer pricing documentation prepared for countries in the same geographic region in situations where appropriate local comparables are available will not, in some cases, comport with the obligation to rely on the most reliable information. While the simplification benefits of limiting the number of comparable searches a company is required to undertake are obvious, and materiality and compliance costs are relevant factors to consider, a desire for simplifying compliance processes should not go so far as to undermine compliance with the requirement to use the most reliable available information. See paragraphs 1.112-1.113 on market differences and multi-country analyses for further detail of when local comparables are to be preferred ...