Delaware Name Reservation & Agent Address

Delaware Name Reservation and Registered Agent Street Address: The Direct Answer

Delaware allows you to reserve an entity name before you file formation documents, and the reservation holds that name for a period of 120 days. According to the Delaware Division of Corporations, this reservation is not a requirement to form your entity — it is an optional step that guarantees the name is held for you during that window. Separately, Delaware law requires every business entity to have and maintain a registered agent in the state, and that registered agent must have a physical street address in Delaware. These are two distinct requirements with different timing, different fees, and different consequences if you get them wrong.

What the 120-day reservation actually does

The reservation locks a name for 120 days so another filer cannot take it while you prepare your certificate of formation or incorporation. The Delaware Division of Corporations states you can reserve online, and the fee is $75.00, payable by Visa, MasterCard, American Express or Discover. You may also submit a reservation application in writing by upload, fax or mail. The Division notes that all transactions submitted on its site are non-refundable, and it recommends printing your confirmation page if you reserve online.

Why the registered agent address must be a street address

The registered agent requirement is not satisfied by a mailing convenience or a post office box. The Delaware Division of Corporations states the registered agent must have a physical street address in Delaware. The agent may be an individual resident or a business entity authorized to do business in the state. If the business is physically located in Delaware, it may act as its own registered agent; otherwise, you must engage a registered agent and inform them of your intentions.

Scope of this guide

This article explains how the 120-day reservation window and the Delaware street address requirement interact in practice: when to reserve, when to appoint an agent, what each step costs, and which decisions belong to you rather than to the state. It draws on the Delaware Division of Corporations guidance on LLC formation and does not cover federal tax steps such as obtaining an Employer Identification Number.

Who Should Plan Around Delaware’s 120-Day Name Reservation and Street Address Rule

Not every founder needs to reserve a name before filing. Because the Delaware Division of Corporations treats reservation as optional, the planning question is less about whether you can reserve and more about whether holding a name for 120 days fits your timeline. Consider reservation if you are still choosing between entity types, waiting on a co-founder or investor decision, or preparing documents that must match the exact name you intend to register. If you are ready to file immediately, reservation mainly adds a step rather than protection.

Main Planning Decisions

First, decide whether the 120-day window matches your expected filing date. A reservation that expires before you file leaves the name available to others, so build in time to file or renew. Second, confirm you have a registered agent with a physical street address in Delaware before formation, since a P.O. box alone does not satisfy the requirement. Third, check that your chosen name is distinguishable from existing Delaware entities and complies with naming rules for your entity type.

Practical Context for International Founders

Founders registering from outside the United States often sequence Delaware formation with federal tax steps. The IRS notes that its online Employer Identification Number tool is free, must be completed in one session, and expires after 15 minutes of inactivity, so gather the responsible party’s details before starting. The IRS also cautions that you never have to pay a fee for an EIN. These are separate from Delaware’s name and agent rules, but they affect how quickly you can move from reservation to an operating entity.

For a structured walkthrough of these steps, see our US company registration resource.

Preparing Before You Reserve a Delaware Name or Appoint a Registered Agent

Preparation for this step is mostly about collecting exact details before you touch any filing system. Two categories of information drive everything: the name you want to hold, and the physical street address of the registered agent who will receive service of process in Delaware.

Information to Gather for the Name Reservation

Before you reserve, confirm the exact spelling, punctuation, and entity designator (for example, LLC, Inc., or Corporation) you intend to use. Because a reservation holds one specific name, any later change means the reservation no longer matches your formation documents. It also helps to prepare one or two alternate names in case your first choice is unavailable. Checking availability through the Delaware Division of Corporations entity search before you reserve reduces the chance of a rejected request.

Information to Gather for the Registered Agent Street Address

Delaware requires a registered agent with a physical street address in the state — not a post office box. Before you commit, collect the agent’s full legal name, its Delaware street address including any suite number, and written confirmation that it has agreed to act for your entity. If you plan to act as your own agent, you must be able to show a genuine Delaware street address and availability during business hours.

Documents and Details Worth Lining Up in Advance

Have your formation documents drafted so the reserved name appears exactly as reserved. Separately, note that an Employer Identification Number is issued by the IRS, not by Delaware; the IRS states that its online tool is free to use, must be completed in one session, and expires after 15 minutes of inactivity. Gathering your responsible-party details before opening that tool avoids a restart. None of these items require a filing fee to prepare — only the reservation and formation filings themselves carry state fees.

With these details assembled, the reservation and agent appointment become straightforward administrative steps rather than last-minute obstacles.

Where the 120-Day Reservation and the Street Address Requirement Meet in Practice

The two requirements are usually handled in sequence, but they interact. The name reservation protects a name; the registered agent requirement protects service of process. A founder can reserve a name without yet having a registered agent, and can appoint a registered agent without reserving a name. The practical question is which one to lock in first when the formation filing will follow shortly after.

Step 1: Confirm the Name Is Available and Reserve It

Check the Delaware entity name database for conflicts, then submit the reservation request. The reservation holds the name for 120 days. Treat that window as a planning horizon, not a deadline to rush a filing you are not ready to make.

Step 2: Identify the Registered Agent’s Physical Street Address

Delaware requires a registered agent with a physical street address in the state — not a post office box. Confirm the exact street address, the agent’s name, and the agent’s written consent before the formation document is filed. If you plan to act as your own agent, the address must be a Delaware street address where you can actually receive service of process during business hours.

Step 3: Align the Name on Every Document

The reserved name must match the name used in the formation filing and in the registered agent consent. Mismatches are a common cause of rejected filings. Once the entity is formed, the reservation is superseded by the entity’s registered name.

Step 4: Keep the Address Current

The registered agent address is not a one-time detail. If the agent moves or the entity changes agents, the state record must be updated. For founders also applying for a US Employer Identification Number, note that the IRS issues an EIN online for free and warns that you never have to pay a fee for one; the business name entered must conform to certain formatting rules (Internal Revenue Service, “Get an employer identification number”).

For a broader sequence covering entity formation and federal identifiers, see our US company registration resource.

Document and Evidence Checklist for a Delaware Name Reservation and Registered Agent Appointment

Before you reserve a Delaware entity name or confirm a registered agent, assemble the supporting documents that prove who you are, what the entity will be, and where it can be reached. A complete file reduces back-and-forth later, especially when the formation filing must match the reserved name exactly.

Identity and Authority Documents

Gather government-issued photo identification for each person authorized to act, plus formation documents or board approvals if an existing entity is the organizer. These matter because the person submitting the reservation or signing the registered agent consent must have authority to bind the entity. If a third party files on your behalf, keep a signed authorization on file. The IRS notes for its own EIN process that a third-party designee must have signed authorization to apply, which illustrates the general principle that delegated filings require documented consent.

Name and Entity Details

Prepare the exact proposed name, including spelling, punctuation, and entity designator, along with one or two alternate names in case the first is unavailable. Also record the intended entity type, because the designator and name rules differ. The IRS cautions that the business name entered on its EIN application must conform to certain formatting rules, a useful reminder that name fields are validated against specific conventions rather than free text.

Registered Agent Street Address Evidence

Collect the registered agent’s physical Delaware street address, not a post office box, and a signed consent to serve. Keep the agent’s contact details and any commercial registered agent agreement in the same folder. This category matters because the street address is the point where legal service and official notices are received, and mismatches between the address on file and the actual location can create delays.

Formation and Filing Records

Retain copies of the certificate of formation or incorporation, the filed name reservation confirmation, and any receipt or tracking reference. These records let you verify that the name on the formation document matches the reserved name and that the registered agent information is consistent across filings.

Why This Checklist Matters

Each category answers a different question: identity proves authority, name details prevent rejection, address evidence supports service of process, and filing records create an audit trail. Keeping them together before you file makes the sequence from reservation to formation easier to manage and easier to explain to banks, tax authorities, and future partners.

Realistic Scenarios: When the 120-Day Reservation and the Delaware Street Address Requirement Drive Different Decisions

Founders often treat the name reservation and the registered agent appointment as one administrative task. In practice, they answer two different questions, and the right order depends on your situation. The Delaware Division of Corporations states that reserving an entity name is not a requirement to form your entity, but it guarantees the name is held for you for a period of 120 days. The registered agent requirement is not optional: Delaware law requires every business entity to have and maintain a registered agent in the state, and that agent must have a physical street address in Delaware.

Scenario 1: You are still deciding between entity types

If you have not settled on an LLC versus a corporation, a reservation lets you hold the exact name while you compare structures. The 120-day window is the planning horizon. If your decision takes longer than that, the reservation lapses and the name returns to availability. The registered agent decision can wait until you are closer to filing, because the agent is appointed as part of formation, not as part of reservation.

Scenario 2: You are ready to file but the name is contested

Here the sequence reverses. Confirm the name is available, reserve it if you want certainty, and line up a registered agent with a Delaware street address before submission. Delaware permits a business physically located in the state to act as its own registered agent; if the agent is someone other than the entity itself, the Division advises contacting the selected registered agent used in your formation and informing them of your intentions.

Scenario 3: You are coordinating with a co-founder or investor

A reservation gives you a documented hold on the name while documents are finalized. Keep the reservation confirmation page, since the Division notes that online reservations are non-refundable and that you should print your confirmation page if you reserve online. The street address requirement is separate: verify the agent’s physical Delaware address before the formation filing, because a post office box does not satisfy the requirement.

Decision points to settle before you act

• Does your timeline fit inside 120 days, or will you need to re-evaluate the name later?
• Will the formation filing match the reserved name exactly, including punctuation and entity designator?
• Who will serve as registered agent, and does that person or entity maintain a physical street address in Delaware?
• If the entity will act as its own agent, is it physically located in Delaware?

For related federal steps, the IRS notes that an Employer Identification Number can be obtained directly from the IRS online, and that you never have to pay a fee for an EIN. That is a separate process from Delaware name reservation and registered agent appointment, but it belongs on the same pre-launch checklist.

Common Mistakes, Risk Controls and Practical Next Steps After Reserving a Delaware Name

Most problems with a Delaware name reservation and registered agent appointment come from treating the two as paperwork rather than as decisions with deadlines. The Delaware Division of Corporations states that reserving an entity name is not a requirement to form your entity, but it guarantees the name is held for you for a period of 120 days. That guarantee is only as useful as the discipline behind it.

Mistake 1: Assuming the Reservation Forms the Entity

A reservation holds a name; it does not create a company. If you reserve and then delay the certificate filing, you still have no entity, no registered agent of record, and no authority to sign contracts in the company’s name. Treat the reservation as a placeholder and keep the formation filing on a separate, tracked timeline.

Mistake 2: Letting the 120 Days Pass Without a Decision

The reservation window is finite. If the name is still the right one, file before it lapses. If the plan has changed, decide deliberately rather than discovering the expiry while a filing is in progress. A simple calendar reminder set at the start of the reservation, plus a second reminder well before the end, prevents most lapses.

Mistake 3: Confusing a Mailing Address With the Registered Agent’s Street Address

Delaware law requires every business entity to have and maintain a registered agent in the State of Delaware who may be either an individual resident or a business entity authorized to do business in the State of Delaware. The registered agent must have a physical street address in Delaware. A post office box, a virtual office, or an out-of-state address does not satisfy that requirement. If the business is physically located in Delaware, then the business may act as its own registered agent. Otherwise, confirm the street address in writing with the agent before the formation filing.

Risk Controls and Next Steps

Keep the reservation confirmation, the agent’s written confirmation of the Delaware street address, and the exact entity name in one file. If the registered agent is other than the entity itself, contact the selected registered agent used in your entity formation and inform them of your intentions, as the Division of Corporations advises. Before filing, re-check that the name on the certificate matches the reserved name character for character. For a structured walkthrough of the wider registration sequence, see our USA company registration resource.

Closing: Turning the 120-Day Reservation and Street Address Rule Into a Simple Sequence

The cleanest way to close out this topic is to treat the two requirements as separate decisions with separate owners. The name reservation is a time-bound hold: the Delaware Division of Corporations states that reserving an entity name is not a requirement to form your entity, but it guarantees the name is held for you for a period of 120 days. The registered agent requirement is a standing condition: Delaware law requires every business entity to have and maintain a registered agent in the State of Delaware who may be either an individual resident or a business entity authorized to do business in Delaware, and that agent must have a physical street address in Delaware.

Because the reservation is optional, you can file formation documents without it. Because the registered agent requirement is mandatory, you cannot operate a Delaware entity without one. If your formation filing is imminent, confirm the agent and street address first, then decide whether a reservation adds value. If your filing is weeks or months away, a reservation may be the more useful step because it protects the name while other decisions settle.

Keep the evidence file together: the reservation confirmation, the agent’s written acceptance, and the exact name as it will appear on the certificate of formation. Matching the name across all three prevents the most common rework. For a structured walkthrough of entity formation, see our USA company registration resource.

FAQs

Is the 120-day Delaware name reservation mandatory before I form an entity?

No. The Delaware Division of Corporations describes reservation as optional and not a requirement to form your entity. It simply guarantees the name is held for you for 120 days.

Can my registered agent use a PO box or virtual address in Delaware?

No. Delaware law requires the registered agent to have a physical street address in Delaware. A mailing-only address does not satisfy that requirement.

Can I reserve a name and appoint a registered agent at the same time?

Yes, but they are independent steps. You can reserve without an agent and appoint an agent without reserving. The practical order depends on how soon you will file formation documents.

What happens if my formation filing uses a name different from the reserved name?

The reservation protects the exact name held. If the filed name differs, the reservation does not cover it, so confirm spelling, punctuation and entity designator before filing.

Can a Delaware entity act as its own registered agent?

Yes, if the business is physically located in Delaware. Otherwise, the entity must use an individual resident or an authorized business entity with a Delaware street address.