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You will be able to pay everywhere well with Czech crowns. Large stores and tourist-orientated shops and restaurants will accept Euros, but it would be naive to think that they will use the day's listed and fair exchange rate.

As someone who lives in the Czech Republic, I need to correct a lot of the "answerers" above:

The Czech Republic IS in the European Union. It is NOT in the Eurozone -- it still has Czech crowns just as the Brits still have their sterling. And like the Brits, the Czechs like having a bit more control over their own monetary policy so it will probably stay that way for a while.

Over the past five years, the Czech crown has appreciated against the U.S. dollar (not surprising, I think only the Argentinian currency hasn't) AND against the Euro. When in 2000 you could get nearly CZK 40 for a dollar, today you will get 20. And whereas two years ago you would get CZK 30 for one Euro, today you will get CZK 27.

So take crowns and have fun. BTW I can advise a good exchange booth in a little hole in the facade next door to the Hotel Adria on Wenceslas Square; banks will charge you processing fees but the guy in the box there will not.

Czech crowns will be fine.

And Czech Republic is in EU from 2004 but not in Eurozone.

You can take any currency with you, but still Czech crowns are the only money you can use everywhere.

We took Czech crowns and had a credit card to pay for any big purchases.

The Czech republic won't be joining the EU before 2011, so unless you are planning to go to a Eurozone country (Belgium, Germany, Greece, Spain, France, Ireland, Italy, Luxembourg, the Netherlands, Austria, Portugal, Slovenia and Finland) Czech crowns will be fine.

I will also warn you that Prague has a VERY big pickpocketing problem, so make sure you split your money up and take care.

In Europe, you can pay with your credit card, but cash is more accepted in most areas. Czech Crowns will be enough for the Czech Republic and for Germany, Austria, etc. you need the Euro currency.

dollar??? Nobody in Europe wants the fu**** dollar!!!!!

Actually in Czech they DO accept the US dollar at most places. They have it programed on their cash registers....at least when I was there in '05. Other than that I'd stick to crowns in Czech

I used the us doller