The national Holland currency is EURO since 2002. Actually EURO was used since 1999 by traveller’s checks and electronic means, but just 3 years later it was introduced as the national money.
Prior to EURO, the national currency of the Dutch nation was the Dutch guilder commonly known as guilder.
The exchange rate available at the beginning of 2002, the moment when the guilder was exchanged with the EURO, was 2.203 guilder = 1 EURO.
The guilder was used for more than 320 years, from 1680 to 2002, when the EURO was introduced.
An interesting fact to mention is that during the time when the Netherlands was annexed to France, from 1810 to 1814, the money used in the Netherlands was the French Franc. And after that period, the guilder became again the official currency.
What is the actual Holland currency
Even if the EURO was introduced, the guilder coins still could be exchanged at the Netherland Central Bank until 1st of January 2007 and the banknotes until 2032.
Because of the EURO, now it is easier to travel in Europe. Most of the countries have the same currency, so you don’t have to be worried about the currency issue. Holland money is the same as from most European countries, so you don’t have to worry about these aspects when visit Netherlands.