Some companies dont mark you as a debtor if you are under a certain threshold (say 10 dollars), because the cost of processing this unpaid amount is not worth t

Some companies dont mark you as a debtor if you are under a certain threshold (say 10 dollars), because the cost of processing this unpaid amount is not worth their time. Also it is smart to have the threshold set to at least 1 cent, because this way you dont ask someone to pay you is supposed to pay you a fraction of a cent due to some rounding error. There are those stories where a company sends you a registered mail, where they ask you to repay a fraction of a cent - what is impossible. Also the cost of the letter (snail mail) made it not worth it. Even if you get an email that is "free" you cant pay 0.0001 cent. I mean you can pay a whole one and then ask to get 0.999 back - the time required by the bookkeeper to process it, then pay it (probably with a fee) is not worth it.