This is simple and applies to most (Western) jurisdictionS: don't sell anything to a company you own or control, at an above market rate. Now, there are many w

This is simple and applies to most (Western) jurisdictionS: don't sell anything to a company you own or control, at an above market rate. Now, there are many ways to value something, and there is generally some room for interpretation on how much to charge exactly. But you will need to find a way to justify the price at which a transaction was concluded. With IP it gets a bit blurry (e.g. you might own some trademarks you want to transfer to your new company), but again, there are a ton of perfectly acceptable ways to value something and not face the wrath of your local tax collector. Just make sure you have a reasonable valuation, based on objective facts, and you'll (mostly) be fine.