Do you need a new EIN after a name, address or ownership change?
A simple change of business name or address generally does not require a new Employer Identification Number (EIN). The IRS says a new EIN is generally needed when ownership or structure changes, but its list for each entity type decides the outcome. Identify what actually changed in the entity, then either apply for a new number or update the existing record through the route that fits the change.
Start with the entity event
The general rule is only a starting point. Some ownership changes and tax elections leave the existing EIN in place. The IRS page on new EINs lists outcomes entity by entity, and that list controls.
The IRS business name change page notes that some name changes may require a new EIN or a final return. Read that as a prompt to look at any ownership or structure change behind the new name. A new name on its own does not replace the EIN.
| Change | New EIN needed? |
|---|---|
| Sole proprietor incorporates | Yes |
| Sole proprietor forms a partnership | Yes |
| Corporation changes its name or location | No |
| Corporation elects S corporation tax treatment | No |
| Merger where the corporation survives | No, for the surviving corporation |
| Merger that creates a new corporation | Yes, for the new corporation |
| Partnership ownership change without termination | No |
| LLC elects corporation or S corporation tax treatment | No, for the election alone |
Sources and context, checked :
Updating a name
The notification route depends on the entity type:
For a recently assigned EIN whose filing requirement has not been determined, the IRS business name change page gives a separate mailing instruction. Follow that page for the address.
- Sole proprietor: send a signed letter to the IRS address where you file your return.
- Corporation: check the name change box on the current return, at Form 1120 page 1 item E3 or Form 1120-S page 1 item H2.
- Partnership: check the box at Form 1065 page 1 item G3.
- Current return already filed: a corporate officer or a partner, as applicable, sends a signed letter.
Sources and context, checked :
Updating an address or responsible party
Form 8822-B reports changes to a business mailing address, business location or responsible party. It asks for the old and new address and the existing EIN. It is neither an EIN application nor the route for a name change.
A change of responsible party must be reported within 60 days. That deadline belongs to the responsible party change, so do not assume it applies to address or name updates.
Sources and context, checked :
Hypothetical example: same company, new name and office
Hypothetical: a corporation changes its legal and trading name and moves to a new office. Ownership and structure stay the same. The corporation keeps its EIN. It reports the name change through the box on its current corporate return, or by officer letter if that return is already filed, and updates its business address with Form 8822-B.
Compare a sole proprietor who incorporates the business into a new corporation. That is a different identity event, and the new corporation needs its own EIN.
Records for the decision
Before anyone applies for a number, write down what changed, the date it took effect and which entry on the IRS list applies. Keep these items with that note:
- Formation, merger or conversion documents, or the name amendment
- A copy of the name change letter or the return showing the checked box
- The filed Form 8822-B and the date it was sent
- The new EIN notice, if one was issued
- A list of vendor, customer, bank and payroll records showing the old name or address, with the date each was updated