If you are planning to stay in Luxembourg for more than three months, you will need a visa. A visa is not required if you are travelling for business or for transit through Luxembourg. However, you must show that you have Enough money to support yourself while in Luxembourg and that you will not be a burden on the local economy.
The following documents are necessary when applying for a visa:
A passport valid for at least six months after your planned departure from Luxembourg
Proof of travel arrangements (e.g. plane ticket)
Proof of sufficient funds (e.g. bank statement, recent income tax return)
Proof of accommodation in Luxembourg (e.g. hotel reservation or rental agreement)
Application fee (€60)