It depends on what country you live in. All cash-out requests that are done before 23:59 every Sunday (GMT +1) are processed on the next Monday.
The Netherlands, Belgium, Germany, France, Spain (and the rest of Europe)
Can take up to 2-4 business days
United Kingdom
Can take up to 2-4 days
South Africa
Can take up to 1-2 days
United States and other countries
Can take up to 3-4 business days