Dear Amanda, I recommend you to change currency only at the official places that have publicated exchange rates (banks, change offices, hotels, travel agencies). It is illegal and very risky to excahnge money in the streets, I do not recommend it at all. If you want to exchange foreign currency to Forint they apply the buying rate. Some change offices are tricky because they display the sell rate first, which is the higher rate, so be very cautious. It is allowed to apply commission, and the change offices usually do use commission, which is 0,2-0,3%. One of the best rates in the city is at the Correct Change offices. The closest office is 10-15- minutes walking distance from our hotel. (1085 József körút 40.) I do not suggest you to exchange (buy) Forint in your home country, because the rate is much better in Hungary. Generally the rates are better in the currency exchange offices than in the banks in Hungary. There are lot of excange offices at the centre. In the shopping centers the exchange rates are worse than in the city centre. If you fly from abroad we recommend you to change currency after your arrival to Budapest city centre, but not in the Ferihegy airport! We never advice to change any money in the airport terminals because the difference can be 15-20% compare to the official rates at the city centre. I hope this information will help you. Regards, Balázs Kékes