Which country is good for establishing a company in terms of formality? And why?

India of course! Easy of doing business. skill labour and easy operation. We are not as good as Singapore or Switzerland but in upcoming years will be close to them.

We established the company in Delaware due to favorable tax conditions. However, with the recent changes (accounting for R&D expenses), we are considering registering in Switzerland. Currently, it is successfully developing as a hub for startups.

Czech Republic was quite smooth, corp. tax has increased by 2%, but I still plenty of benefits that I see here. However, I heard a lot about how Estonia is an amazing country for startups, how easy it is to setup a company and so on. Sweden is also a good place for startups. However, I do not know how it goes when getting the money from the company (taxes here can get quite high)

Estonia is often lauded for its e-residency program, which allows for easy online business registration and management, coupled with a clear and favorable taxation system. Its digital infrastructure is designed to be entrepreneur-friendly, minimizing bureaucratic hurdles and making it an attractive option for startups.

I've heard there's a thing called Free Zones in Dubai where you don't have to pay any taxes and you can open your company online in that region

We’re registered in Canada, taxes are so much better than in the US

Singapore is often considered a good country for establishing a company due to its ease of doing business, clear regulations, and robust legal framework.