Currency substitution
（重定向自Dollarisation）
![Worldwide official use of foreign currency or pegs.
US dollar users, including the United States
Currencies pegged to the US dollar
Euro users, including the Eurozone
Currencies pegged to the euro
Australian dollar users, including Australia
Indian rupee users and pegs, including India
New Zealand dollar users, including New Zealand
Pound sterling users and pegs, including the United Kingdom
Russian ruble users, including Russia and other territories
South African rand users (CMA, including South Africa)
Special drawing rights or other currency basket pegs
Three cases of a country using or pegging the currency of a neighbor](/Images/godic/202501/09/Foreign_Currency_uses_and_pegs,_Ruble_included4526.png")
Currency substitution or dollarization occurs when the inhabitants of a country use a foreign currency in parallel to or instead of the domestic currency.
Currency substitution can be full or partial. Most, if not all, full currency substitution have taken place only after a fatal economic crisis: examples are Ecuador and El Salvador in Latin America.