I was fined for not having a tram ticket in Poland. How does this affect me?

I was fined because i didn't use ticket and now it was already passed two month i want to ask that if i pay now do they charge you extra??

Just pay the fine and penalty and be thankful you didn't ride the tram without a ticket in a more enlightened country like Singapore:

youtube.com/watch?v=eqACireM5XI

Understand that this is considered a civil fine in Poland, not a crime. So, if you don't have a registered address in Poland, or somewhere else in the E.U., they can't collect the fine. These controllers get commissions on the fines they generate, so they are not likely to waste time on people from whom they can't collect. They can detain people and wait for the police to demand ID, but usually won't if they are foreigners. Even when trying to follow the rules, a visitor can have problems with the controllers because the rules can be very complicated. Passes don't work on some busses, or an extra ticket is needed for a large bag, etc.

I pushed my luck too many times, and got caught out. Tried to pretend I was a tourist who didn't know, it didn't work. When the fine cost more than the monthly pass, I felt like a giant idiot (not to mention a bad example of an expat) and have been using the pass since.

Last week an Asian guy came off the tram where I was waiting, accompanied by two of these officers, and I felt like stepping in because no matter how much the officers insisted that he has to pay, he kept repeating his excuse:

"I was just texting someone and then I was going to get a ticket"
"It doesn't matter, you get on the tram first thing you do is get a ticket and validate it"

And so on. We are really blessed when it comes to Poland's communication lines and us foreigners shouldn't take it for granted by not supporting it.

@WhirlwindTobias

Agreed, it's not that expensive (89PLN for a month for all lines in Krakow) and so I don't understand why people living there try their luck and don't just get the pass. It's also peace of mind, I know I don't need to panic if the ticket validators are not working or I don't have change for a ticket.

As for tourists, there is plenty of information from official and non-official channels surrounding how to get around with public transport and it says almost everywhere that you need to validate your ticket as soon as you get on. Using your example, the inspectors will not come through in KRK if there is a queue at the machine or someone visibly buying, and keeping in mind the sometimes very little amount of time between stops for inspectors to work. If the person is sitting on their phone and not visibly buying or validating a ticket, that's their fault.

I heard that sometimes if you dont validate well the ticket you can be fined.
It happens to somebody.

In Poland many of the ticket inspectors are fake, if a ticket inspector suggests you go to a cash machine to get money its a scam. If they suggest they will bring the Police unless you pay, tell them to bring the Police or jog on. By Polish law they are obliged to give you a ticket local or foreigner. If you get a ticket there are offices around town you can go and pay in person, so ask the ticket inspector for the nearest office to pay and check it on your Wifi.Then pay your dues.

If you don't pay your fine, they will catch you and then they will come after you. I don't understand how someone does not buy a ticket and then thinks they can get away with it. The firm employing the ticket inspectors (who are called 'kanary' in Polish) get a percentage of all fines, and they have to catch a number of people without a ticket per month as this is in their contract with the tram companies. It is not worth it.