I would like to borrow money to friend but somehow that I know he will return money to me
Somehow with credit/debit card online? Is there any service like that?
For example I borrow money to someone and then wait for example 30 days and the money return to me?
I don't know if there is a service for that but my advice on lending money to friends or family is make sure you can afford to never get it back or are prepared to end your friendship over it. I know this from experience, I have family that owe me around $6k total, and have for many years. Watch a couple of episodes of Judge Judy for examples.
Yes I know that. What I think is about they sign something and I just (somehow) charge their debit or credit card?
I THINK there are APPS that will let you charge a CC but you might want to investigate that, assuming you have some kind of tablet or smartphone that is.
Even with a contract drawn up it does not guarantee repayment. The only thing a contract would do is allow you to pursue a small claims or civil action for a judgment. As most of the posters above have said when "Lending" money to a friend or family member you simply need to be prepared to consider it a gift. If in fact they do pay you back, so much the better. But if not, no hard feelings. If you can't do that then simply say " I am not in a position to lend money at this time."
I have let several family members " borrow " money from me learned my lesson. Now if someone I know ask me I just say I do not have it or if it is a small amount I just give it to them. It is easy to trust people and want to see the good in them but it usually does not work out.
Lending to friends is trickier. Sign a written agreement. No matter how simple the agreement may be, ensure it is signed by all parties before you release the money. Lend only the amount you have surplus. A repayment plan is another way of getting back your money in time.