And what is the reason for all this?
You know, the right question would be "will a Bulgarian bank finance my new Mercedes if I run my business through a Bulgarian company?". And you didn't ask that, so it's likely either a bad case of vanity or a bad case of wanting to be clean and play by the book.
Companies pay taxes in order to be an entity that can then pull much more money into the company through financing and investments. Not just to pay tax and get nothing. You at least need access to a good credit card. If you can't even get that, and you're jumping through tax hoops, then you're doing it wrong.
In any case, going to Eastern Europe to do business is an absolutely insane move. When the Bulgarian/Czech tax authorities put your balls in a vice and start squeezing, can you afford to go to court to defend yourself on a short notice? Do you know where the court is? Do you have a lawyer you can call? Do you speak the language? Do you follow the regulation changes closely?
If you aren't capable of winning a court case in Prague against Czech tax authorities, don't even step foot into Eastern Europe.
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