Bitcoin is money that you can send far cheap. So you can sell your product for Bitcoin and buy stuff you need with Bitcoin that you earn. Very simple.
Another way is paying to your employees with bitcoin to avoid taxes, but that's not really legal though
Then voluntarily filing for the income tax is going to be the solution.
Or you can do an ICO / IPO to expand your business, through the issuance of tokens for the rapid development of your economy.
For the ICO, there's no need to do this. I think there were projects before that aimed to help the agricultural sector and economy by providing their tokens but it wasn't really effective and useful at all. It was abused and just became a source of wealth collection for the side of the developers.