I don't know about Luxembourg, but Belgium and the Netherlands also have special tariffs for high tech products. You'll want to look for specialized council though, most 'regular' accounts have no idea.
Thirdly, several countries like Panama have no corporate tax at all as long as you don't live there. Depending on what your life goals are, it may be an idea to build up a retirement account there. Again it is highly dependent on the circumstances.
I didn't knew Belgium and Netherlands have some special treatment for high tech products -- I'll look into it.
Regarding Panama, I have no information about them, but I'd personally keep things within Europe.
Re: 'just pay your accountant or lawyer', not to pounce on you but this is incredibly naive. Accountants and lawyers who spend 95% of their time doing mundane things like the books of the carpenter down the road are not qualified for this type of work. Any high-tech company owes it to itself to find highly specialized professionals, who will pay themselves back manyfold, even if you think they're expensive. (heck they are expensive. most charge 150 euro and hour or more, plus office overhead). Still when you're a real company (i.e. not doing 10k a year in iFart apps) it can be money well spent.
It was more of a joke, I was mostly trying to underline that I imagine this to be only for big companies.
Do these guys have a website ?
Anyhow, just the cost of the incorporation isn't the major criteria. I'm looking more at the total cost for such a thing: the total administrative costs over a year plus the total taxes must be well bellow what one would pay locally otherwise it's not worth the trouble.
As most expenses (accountant, rent) are rather fixed costs, this means that the whole thing becomes feasible only for companies that exceed a given income/profit.
I am not sure if you can file taxes without an accountant, but be prepared to pay through the nose for one. Both our lawyer and our accountant also gave us bad advice, like telling us we needed to register for VAT (we didn't), just to get more money out of us. A year later, the company owes the lawyer and accountant more than it ever made, without us ever seeing a single cent.
Bulgaria has a 10% rate on corporate profit and then 5% on dividends. This makes it quite appealing but the language isn't that nice and not sure if corruption isn't a problem there.
Cyprus is presumably also a good pick but I don't know much about it except the fact that the language is Greek so I wouldn't feel comfortable signing papers in something like that. Learning the language seems hard and using a translator for everything seems a bit of a hassle. Just as with Bulgaria, it might be worth it tax-wise but ignoring the language problem.
Jersey would be the ideal pick, they have a 0-10% tax rate there and it's all English but it seems that the island is more of a Gentlemen's club for big financial firms.
What I'm actually looking quite seriously nowadays for my own company is Luxembourg. They have a big tax rate of about 25% but they wave about 80% of it for intellectual property gains, giving you about 5% actual tax rate. Of course, you still have the 25% on the dividends.
I still haven't analyzed this enough as I still don't know what the total annual cost would be (accounting, rent, etc), but Luxembourg is looking quite good so far.
What we need is an actual index for startup friendly countries. There are all these statistics and lists but they all take into account big companies where you might need to hire locally or get some permits, etc. I've noticed no actual index for sofware startups which need basically low-cost, hands off (ie. as little involvement as possible) and preferably low-taxed entities. It might very well be a magical unicorn :-) and if you are American you won't gain much anyhow due to your fiscal system - that is if you ever want to pay any dividends.