I’m not gonna lie, the first Czech word I learned when I first came here nearly 4 years ago was Peníze aka money. I was driving with my manager at that time and saw this huge billboard from a bank with the word Peníze in it and I thought it was hilarious (but I obviously thought of something else).
Back then I just moved here from Indonesia because of a job, and just like everyone else who is new to a country, I needed to get my paperwork done, get a new SIM card, set up a bank account, etc. I did everything based on a recommendation from a friend I just met, not knowing anything including the language or the market, and definitely didn’t do any research. I want to make things easier for you.

Although Czech Republic has joined the European Union since 2004, it is still outside of the Euro Zone until today, which means the Czechs still have not used Euro like their lovely neighbour slash ex-partner Slovakia. I personally think it’s better this way because it makes things cheaper somehow (but of course not as convenient to travel to neighbouring countries). But either way, here people use the Czech Crowns (koruna, Kč, CZK).
There are 100, 200, 500, 1000, 2000, and 5000 CZK banknotes and 1, 2, 5, 10, 20, and 50 CZK coins, maybe click here for more info. 1 EUR is roughly about 25 CZK (1 GBP ≈ 28 CZK, 1 USD ≈ 22 CZK, 1 CAD ≈ 17 CZK). Euro is more or less accepted in big places, but firstly you will receive changes in Crowns and secondly, you will pay more in Euro than in Crown (for example if you’re shopping in Albert or Billa, they would take 1 EUR for about 24 CZK). So get your Crowns ready when you’re coming to Czech Republic!