What's the best way to structure a startup (global online and offline sales) to reduce tax burden? How and where should we create business entities?

Cash money should be treated separately than sweat equity. There are practical reasons for this namely that sweat equity should always be granted in conjunction with a vesting agreement (standard in tech is 4 year but in other sectors, 3 is often the standard) but that cash money should not be subjected to vesting. Typically, if you're at the idea stage, the valuation of the actual cash going in (again for software) is anywhere between $300,000 and $1m (pre-money). If you're operating in any other type of industry, valuations would be much lower at the earliest stage. The best way to calculate sweat equity (in my experience) is to use this calculator as a guide: http://foundrs.com/. If you message me privately (via Clarity) with some more info on what the business is, I can tell you whether I would be helpful to you in a call.

I've discussed ideas with hundreds of startups, I've been involved in about a dozen startups, my business is at $1M+ revenue. The bad news is, there is no good way to protect ideas. The good news is, in the vast majority of cases you don't really need to. If you're talking to people about your idea, you could ask them to sign an NDA ("Non Disclosure Agreement"), but NDAs are notoriously hard to enforce, and a lot of experienced startup people wouldn't sign them. For example, if you asked me to sign an NDA before we discussed your Idea, I'd tell you "thanks, but no thanks". This is probably the right place though to give the FriendDA an honorable mention: http://friendda.org/. Generally, I'd like to encourage you to share your Ideas freely. Even though telling people an idea is not completely without risk, generally the rewards from open discussions greatly outweigh the risks. Most startups fail because they build something nobody wants. Talking to people early, especially people who are the intended users/customers for your idea can be a great way to protect yourself from that risk, which is considerably higher than the risk of someone taking off with your idea. Another general note, is that while ideas matter, I would generally advise you to get into startup for which you can generate a lot of value beyond the idea. One indicator for a good match between a founder and a startup is the answer to the question: "why is that founder uniquely positioned to execute the idea well". The best way to protect yourself from competition is to build a product that other people would have a hard time building, even if they had 'the idea'. These are usually startups which contain lots of hard challenges on the way from the idea to the business, and if you can convincingly explain why you can probably solve those challenges while others would have a hard time, you're on the right path. If you have any further questions, I'd be happy to set up a call. Good luck.

The previous answers given here are great, but I've copied a trick from legendary investor Monish Pabrai that I've used in previous startups that seems to work wonders -- especially if your company does direct B2B sales. Many Founders/ CEOs are hung up on having the Founder/ CEO/ President title. As others have mentioned, those titles have become somewhat devalued in today's world -- especially if you are in a sales meeting with a large organization. Many purchasing agents at large organizations are bombarded by Founders/ CEOs/ Presidents visiting them all day. This conveys the image that a) your company is relatively small (the CEO of GM never personally sells you a car) and b) you are probably the most knowledgeable person in the organization about your product, but once you land the account the client company will mostly be dealing with newly hired second level staff. Monish recommends that Founder/ CEOs hand out a business card that has the title "Head of Sales" or "VP of Sales". By working in the Head of Sales role, and by your ability to speak knowledgeably about the product, you will convey the message that a) every person in the organization is very knowledgeable about the ins and outs of the product (even the sales guys) and b) you will personally be available to answer the client's questions over the long run. I've used this effectively many times myself.

You should retain a lawyer, or another qualified individual, to act as the third party designee for the corporation (if you do not have a partner or co-owner who is a US citizen). The designee should prepare Form SS-4 (Application for Employer Identification Number) and Form 8821 (Tax Information Authorization) for the corporation’s president to sign and return.

On paper you have the advantage but after several startups control resides in he who knows how to execute the vision of the company.