Imagine I want to change the formula of transactions between a group of people who want to use this money in this way: 
 **"Everyone will have a maximun quantity of money to waste in the month, and whoever received an amount from other would waste that amount over the maximum."**

That is a credit that avoid Bitcoin could be seen like something material. So I am asking about a Bitcredit. If it is possible in your implementation and what could be the cost of use.

The project I have is more or less more specific that a simple phrase, so I could give more explanations. But the concept itself is so easy like I exposed.

So the question is: **is it possible with bitcoins? What could be the cost?**