Which payment system to choose for accepting international payments of physicists who do not register an individual entrepreneur or LLC?

Question

Payment systems

Car rental service. The site is currently on WIX, in a couple of months it will be on WordPress. Income is still small. And if customers from Russia can pay in cash or transfer to a card, then foreigners can book a car only by paying in advance on the site. What systems work both there and here equally smoothly?
Income from 50 to 100 kilo rubles per month.
While I don’t want to register an IP, I don’t see the point.
Recommend to a newbie.

Answer 1

paypal
The IRS will quickly make sense.
On the Internet, you can sell anything and give a shit to everyone up to a certain point, but doing an offline business without covering your ass is somehow a so-so idea.

Answer 2

While I don’t want to register an IP, I don’t see the point.

The statute of limitations for economic crimes violations is 3 years. Even a little more, taking into account the occurrence of the fact of a violation when, in the next reporting year, people do not declare income ...
Punishment?
Well, firstly, the income of an individual is subject to personal income tax in the amount of 13% (compare with 6% of the IP STS "Income"), and secondly, a fine.
Well, yes - against the backdrop of quite high-quality purges of banks, banks more or less follow the left and they now have the right to suspend operations on the account (freeze) and request documents that confirm the legality of income. Even if the income is only 1 rub.
The rest is of course a matter of taste.