The context suggests that there are several recommended best practices for applying the arm's length principle in transfer pricing. These practices are not explicitly mentioned in the given information, but based on my knowledge as an expert Q&A system, I can provide an explanation of what these recommendations might entail for someone new to accounting:

1. Gain an improved understanding of the arm's length principle: This means that it is important to have a clear understanding of what the arm's length principle entails. It refers to the idea that transactions between related parties should be priced as if they were conducted between unrelated parties in an open market.
2. Minimize transfer pricing-related tax risks: This recommendation suggests that businesses should take steps to reduce the potential tax risks associated with transfer pricing. This can be achieved by ensuring that transfer pricing policies and practices are in line with the arm's length principle and by maintaining proper documentation to support the pricing decisions.
3. Think about business and economics first: This recommendation emphasizes the importance of considering the economic realities of the business when determining transfer prices. It suggests that businesses should focus on the commercial aspects of their transactions and the market conditions in which they operate, rather than solely relying on tax law considerations.
4. Have a solid understanding of your business: This recommendation highlights the significance of having a thorough understanding of the business operations, industry dynamics, and value drivers. It implies that businesses should be able to justify their transfer pricing decisions based on the specific characteristics and circumstances of their own organization.
5. Embrace the concept of the arm's length standard: This recommendation encourages entrepreneurs to fully embrace and support the arm's length principle. It suggests that businesses should not only understand the principle but also actively demonstrate its application in their transfer pricing practices. By doing so, they can ensure that their transfer pricing aligns with the economic realities of their business and taxation.

It is important to note that these explanations are based on general knowledge and not directly referenced in the given context. When setting up an offshore investment entity, there are several things you need to be aware of. First, you should consider the specific facts and circumstances of your case to determine the appropriate method to use. It is important to critically evaluate whether the method you choose can be regarded as reliable on a stand-alone basis. In most cases, using a secondary method in combination with the chosen method will offer an advantageous trade-off.

Additionally, you should carefully evaluate the functional and risk profile of the tested party. If the tested party exhibits a limited routine profile, it is expected to have small but comparable stable profits. These profits can be substantiated by looking at the net margins of comparable companies using the modified RPM or TNMM.

Furthermore, it is crucial to identify and collect sufficiently reliable data for the comparability analysis. This documentation should include detailed adjustment calculations for both internal and external comparables. Keep in mind that the comparability criteria tend to be applied restrictively, so it is important to consider this when selecting comparables.

Lastly, it is worth noting that the availability of local comparables is continually improving in certain countries like China, India, and Russia. Conducting local benchmarks can help ensure compliance and defend higher margins when dealing with tax authorities.