Yes, the Thai DBD (Department of Business Development) document and a Business License are different.
The DBD certificate is an official document issued by the Thai Department of Business Development certifying that a business is registered and legally recognized in Thailand. It serves as proof of company registration or incorporation.
A Business License (such as a Foreign Business License) is a separate permit required for foreign-owned companies to operate in certain restricted business sectors in Thailand. It is issued after company registration and allows the business to legally engage in specific activities under the Foreign Business Act.
For your business visa application, they may request both:
The DBD certificate as proof your company is officially registered in Thailand.
Additional company registration documents such as a Certificate of Incorporation or official business registration papers showing legal status and details of the company.
This means the DBD document confirms registration, while the Business License permits certain business activities. You should clarify with the requesting authority exactly which documents they need, but generally, the DBD certificate and business license are distinct documents serving different purposes.
If you applied for a business visa, providing both the company registration (DBD certificate) and any required business licenses will support your application
You do meet some key requirements for Thai permanent residency, but not all:
You have a valid work permit and have been living and working in Thailand for 4 years, which meets the minimum 3 consecutive years holding a non-immigrant visa/work permit requirement.
You are married to a Thai national, which qualifies you under the family/humanity category.
You speak Thai well, which will help for the language test during the application interview.
However, additional requirements include:
You must have paid taxes regularly and show financial stability, often demonstrated by tax returns and salary slips.
You need to pass a Thai language speaking and listening test during the interview.
The application process is competitive with limited quotas annually.
You must prepare extensive documentation including passport copies, work permit, marriage certificate, financial statements, health certificate, and others.
Unfortunately it's not you think, it's what they think lol, the TM30 is used in many of the visa processes. But you say you got the visa without it, well done. If you do need in the future you would need to talk to the immigration office and explain your situation they will tell you there requirements.
there is a "residents certificate" form, it's in Thai , you get it from the imm dept, it needs the house owner to sign it, you need a copy of thier blue book and Thai ID.