Is Using a Third-Party Address for Company Registration Legal in Taiwan?

Using a third-party address for company registration is not necessarily illegal.
The key factors are whether you have the legal right to use the address and whether the premises comply with applicable regulations.
For example, registering a company at a business center may be permitted if there is a valid agreement, the required proof of address use is available, and the premises meet relevant requirements.
Unauthorized use of an address, false address information, or violations involving the actual operating premises may create legal or tax risks.
Always review the service agreement and supporting documents before signing.