A company can use a single EIN across multiple units with multiple fictitious names. You can have multiple DBA under one sole proprietorship, or multiple business names under one corporation. Your DBAs are just your business nicknames. Whether you’re required to have one depends on how your business is organized and what kind of taxes it pays.
You can file all government forms yourself paying fees only if any apply. When you change your business name, you submit an EIN name change. Each business entity can have only one EIN.
Separate EINs for Different Entity Types
If you have multiple businesses that are taxed differently, such as a corporation and an LLC, they’ll require separate EINs. An EIN is a unique Tax Identification Number (TIN) that the IRS uses to identify your business. Many bankers would request an EIN regardless.
State Registration of Fictitious Names
Fictitious names are a state matter. Most states require businesses to register their DBAs. Not all businesses need an EIN. You won’t have a separate EIN for a DBA. Whether you’re required to have one depends on how your business is organized and what kind of taxes it pays.
However, just because it’s possible to operate several different types of businesses under one company doesn’t mean you should. An EIN is a unique Tax Identification Number (TIN) that the IRS uses to identify your business. Many bankers would request an EIN regardless.