Ohio Form 521, the Statutory Agent Update: how to fill it out and file it
Ohio Form 521, the Statutory Agent Update, is the Secretary of State filing that appoints a new statutory agent, records an agent's new address, or records an agent's resignation. The state fee is $25 (ORC 111.16(R)(1)), it is filed online at Ohio Business Central or by mail, and regular processing takes about 4 to 6 business days.
When you need Ohio Form 521
You need Form 521 whenever the statutory agent information on the Secretary of State's record for your Ohio LLC, corporation, nonprofit, or registered out-of-state entity stops being correct. Ohio law requires the entity to appoint a replacement "forthwith" when its agent dies, resigns, or moves out of state (ORC 1706.09(D); 1701.07(D)), and requires the agent or the entity to file the new address forthwith when the agent moves (ORC 1706.09(E); 1701.07(E)). Form 521 is the filing that does both.
The four situations that call for it:
- You are replacing the agent with a different person or company. This is the common case: moving from a friend or an attorney to a commercial agent, moving from one commercial agent to another, or taking the job back yourself. Box 1.
- The agent is staying but has moved to a new Ohio address. Box 2. If the agent moved out of Ohio, Box 2 is not enough; the agent no longer qualifies and you need Box 1 with a new agent.
- The agent is resigning. The agent, not the entity, files Box 3, and must send a copy to the entity's principal office on or before the filing date. Our Ohio statutory agent resignation guide covers the 30- and 60-day waiting periods.
- The record is simply wrong. A misspelled agent name or a transposed street number from an old filing is corrected with a Box 1 or Box 2 filing that restates the right information, not with an amendment to the articles.
Form 521 is not the form for a brand-new entity. A new LLC appoints its first agent inside the Articles of Organization, Form 610, and pays no separate agent fee. It is also not the form to bring back an entity Ohio has already cancelled for having no agent; that is Form 525A, discussed in the comparison table below. Changing the agent does not change the entity's name, principal office, members, or anything else in the articles, and it never requires an amendment.
Who signs Form 521
Two parties sign a Box 1 appointment: an authorized representative of the entity, and the new agent, who signs the acceptance of appointment. Ohio will not record a new agent without the acceptance; ORC 1706.09(B) requires the agent's written acceptance for an LLC and ORC 1701.07(B) requires it for a corporation. A Box 2 address change is signed by the agent or the entity. A Box 3 resignation is signed by the agent alone.
Who counts as an authorized representative depends on the entity type. For an LLC it is a member, manager, or other person the operating agreement or the members have authorized. For an Ohio corporation it is an officer, or for original articles an incorporator. For a nonprofit it is an authorized officer. For a foreign entity it is whoever has authority under its home-state documents. The form asks the signer to print their name and title; a typed name on the online form counts as a signature.
When the new agent is a company rather than a person, the company's name goes in the acceptance block and a representative of the company signs on the "By" line with their own name and title. When you switch to a commercial agent, the agent company typically signs the acceptance for you and either files the whole form or hands it back for you to file.
Form 521 section by section
Form 521 is one page plus the signature block. Each item below matches a field on the form, in order. Fill it from the Secretary of State's current record for your entity, not from memory, because the state matches what you type against what it already has and rejects mismatches.
Entity name and charter or registration number
Enter the entity's name exactly as it appears on the state record, including the designator and any punctuation. Then enter the charter number (for Ohio entities) or registration number (for out-of-state entities), the number the state assigned when the entity was first filed. You can find both on the stamped articles or by looking the entity up on the Secretary of State's business search; our Ohio registered agent search guide shows where the agent and the number appear on the record.
Type of entity
Check one: domestic or foreign, and then the entity form, such as for-profit corporation, nonprofit corporation, limited liability company, limited partnership, or limited liability partnership. The choice matters because the signature and resignation rules differ by type. An out-of-state LLC registered in Ohio checks foreign limited liability company; its home-state agent has nothing to do with this form.
Current agent
Enter the name of the agent currently on record. For a Box 1 appointment, this is the person or company being replaced. The state uses it to confirm it is looking at the right record, so copy it from the business search rather than typing what you think it should be. If the entity has never had a valid agent on record, which happens with some very old filings, leave this blank and the state will treat the filing as an original appointment.
Box 1: Subsequent appointment of agent
Check this box to name a new agent. Enter the new agent's full name, or the full legal name of the agent company, and the new agent's complete Ohio street address with city, state, and ZIP code. The address rules are strict: an individual agent lists the street address of their Ohio residence, and an entity agent lists its usual place of business in Ohio, a location customarily open during normal business hours. A P.O. box is never acceptable, even one with a street-style address, and the current form also refuses commercial mail receiving agency addresses (ORC 1706.09(C); 1701.07(C)). The full qualifications are in Ohio statutory agent requirements.
Box 2: Change of address of an agent
Check this box when the agent stays the same but has a new Ohio address. Enter the agent's name as it appears on the record and the complete new street address. The same P.O. box prohibition applies. If the move took the agent outside Ohio, do not use this box; the agent no longer qualifies, and the entity needs a Box 1 appointment of someone who does.
Box 3: Resignation of agent
Check this box only if you are the agent and you are quitting. The form asks for the agent's name, the agent's current address, and the entity's principal office address, and it includes a statement that a copy of the resignation was sent to the entity at its current or last known principal office on or before the filing date. The agent signs. The entity does not. Resignation takes effect 30 days after filing for an LLC or for-profit corporation and 60 days for a nonprofit (ORC 1706.09(F); 1701.07(F); 1702.06(F)).
Acceptance of appointment
This block is used with Box 1 only. The new agent prints their name, or the agent company's name, and signs under a statement that the agent "hereby acknowledges and accepts the appointment of statutory agent" for the named entity. If the agent is a company, a representative signs on the "By" line. A Box 1 filing without this signature is the single most common reason Form 521 is rejected.
Signature of the entity
The last block is for the entity's authorized representative: signature, printed name, and title. This is required for Box 1 and may be used for Box 2. It is not used for Box 3, which the agent signs alone. The form does not require a notary, and it does not require any other members or officers to sign unless your own operating agreement or bylaws say so.
How to file Form 521 online at Ohio Business Central
Online filing is the fastest route. Ohio Business Central takes the same information as the paper form, collects the $25 fee by card, and emails the filed document back. Here is the sequence:
- Sign in to Ohio Business Central with an OH|ID account, or create one. Our Ohio Business Central guide covers the account setup.
- Choose the filing for a statutory agent update and search for your entity by name or charter number. Select it from the results so the state's record pre-fills the entity name, number, and current agent.
- Choose the action: appoint a new agent, change the agent's address, or resign as agent.
- Enter the new agent's name and Ohio street address, or the new address for the existing agent.
- Complete the acceptance of appointment. The online form either lets the agent type their name as an electronic signature or asks you to upload a signed acceptance as a PDF, depending on how the filing is set up. If the agent company signed a paper acceptance, upload it here.
- Enter the authorized representative's name and title as the entity's signature.
- Choose regular or expedited processing, review the summary page, and pay by credit or debit card.
- Save the confirmation number. The filed Form 521 arrives by email once the state approves it, and the business search updates at the same time.
A rejected online filing comes back by email with the reason. You fix the item and resubmit. Filings made on Ohio Business Central are public record, so do not add phone numbers or email addresses to any field that does not ask for them.
How to file Form 521 by mail
Download the current Form 521 PDF from the Secretary of State's forms page, type the entries, print it single-sided, and collect the wet-ink or typed signatures. Mail it with a check or money order for $25 payable to "Ohio Secretary of State" to:
| Service | Mailing address | Fee enclosed |
|---|---|---|
| Regular processing | Ohio Secretary of State, P.O. Box 788, Columbus, OH 43216 | $25 |
| Expedited processing | Ohio Secretary of State, P.O. Box 1390, Columbus, OH 43216 | $25 plus the expedite fee |
Mailed filings add transit time on both ends: a few days for the envelope to reach Columbus and get opened, and a few days for the filed copy to come back. Budget two weeks for a regular mailed filing. Use the mail only when the agent's acceptance exists on paper and nobody can scan it, or when the filer has no card for the online payment.
Walk-in filings for the 1-business-day and 4-hour expedite levels are delivered to the Secretary of State's client service center in Columbus rather than mailed. The 4-hour level must be in by 1:00 p.m. Our Ohio expedited business filing guide has the delivery details.
Form 521 fee and expedite tiers
The state fee for Form 521 is $25, set by ORC 111.16(R)(1), whichever box you check. Expedited processing is optional and is charged on top of the $25. The tiers are the same ones the state uses for every business filing.
| Service level | Total paid to the state | Turnaround | Filed how |
|---|---|---|---|
| Regular | $25 | About 4 to 6 business days from receipt | Online or mail to P.O. Box 788 |
| Expedited Level 1 | $125 | 2 business days | Online or mail to P.O. Box 1390 |
| Expedited Level 2 | $225 | 1 business day | Walk-in, Columbus |
| Expedited Level 3 | $325 | 4 hours | Walk-in, Columbus, submitted by 1:00 p.m. |
An agent that represents many entities and is moving all of them at once can file a single multiple-entity update instead of one Form 521 per entity, at $125 plus $3 per entity record (ORC 111.16(R)(2)). That is a filing the agent company makes, not something an individual business owner needs. For one entity, Form 521 at $25 is the right filing.
The fee is per filing, not per change. If you are both naming a new agent and the entity has moved its principal office, the principal office is not on Form 521 at all; it is updated on the entity's next filing or by a separate amendment. See principal office vs. statutory agent address for which address lives where.
How long Form 521 takes to process
Regular processing of Form 521 takes about 4 to 6 business days from the day the Secretary of State receives it. Online filings are received the moment they are submitted; mailed filings are received when the mail is opened. Expedited filings are processed in 2 business days, 1 business day, or 4 hours depending on the tier. The agent change takes effect when the state files the form, not when you submit it.
Until the state files it, the old agent remains the agent of record. Anything served on the old agent during that window is valid service, so keep the old agent in the loop until you see the new name on the business search. If you are leaving a commercial agent, do not cancel that account until the state record shows the replacement; a gap with no agent is exactly what ORC 1706.09(L) punishes.
Processing runs slower in January and in the weeks after major tax deadlines. If the change is tied to a date, such as a closing where the buyer wants the new agent on record, file at least two weeks ahead or pay for the 2-day expedite.
What the confirmation looks like and how to verify the change
When the state approves Form 521, you receive the filed document stamped with the Secretary of State's filing date and a document number. For online filings it arrives by email as a PDF; for mailed filings a stamped copy comes back by mail. The stamped Form 521 is your proof that the change was recorded, and a bank or counterparty that asks for evidence of the current agent will accept it.
Verify the change independently on the Secretary of State's business search:
- Search the entity by name or charter number and open its record.
- Check the agent name and address shown in the entity details. They should match the new agent exactly.
- Open the filing history. The Statutory Agent Update should appear with its filing date and document number, and you can download the filed image.
- Confirm the entity status still reads Active. A Form 521 does not change status, so if it reads anything else, something separate is going on.
If the business search still shows the old agent more than a week after your confirmation email, call the Secretary of State's business services line with the document number. Our clients also see the appointment status in the portal change from Pending to Active when the state record lists us.
Common reasons Form 521 is rejected
The Secretary of State rejects a Form 521 when the form is incomplete or conflicts with the record. The rejection notice names the problem, and the fix is usually a one-line correction. These are the ones we see most:
| Rejection reason | What went wrong | Fix |
|---|---|---|
| Missing acceptance signature | Box 1 was checked but the new agent did not sign the acceptance of appointment | Have the new agent sign the acceptance block, or upload the signed acceptance, and resubmit |
| P.O. box or CMRA address | The agent address is a post office box, a private mailbox styled as a suite, or a mail-forwarding service | Enter a physical Ohio street address: the agent's residence or a business location open during business hours |
| Wrong entity number | The charter or registration number does not match the entity name | Look the entity up on the business search and copy the number from the record |
| Name mismatch | The entity name or current agent name differs from the record, often by a missing comma, designator, or middle initial | Type both names exactly as the state record shows them |
| Wrong box | Box 2 used for an agent who moved out of Ohio, or Box 1 used by an agent trying to resign | Box 1 for any new agent; Box 2 only for the same agent at a new Ohio address; Box 3 only for the agent's own resignation |
| No entity signature | Box 1 filed with the agent's acceptance but nobody signed for the entity | Add the authorized representative's name and title |
| Fee short or missing | Check for the wrong amount, or a mailed form with no payment | Enclose $25, plus the expedite fee if any |
A rejected filing means the old agent is still on record. If the reason you filed was that the old agent resigned, the 30-day clock under ORC 1706.09(F) is still running while you fix the form, so correct and resubmit the same day the rejection arrives.
Form 521 vs. other Ohio agent forms
Ohio has three different filings that put a statutory agent on the record, and people regularly file the wrong one. Form 521 is for an entity that already exists and is in good standing. The table sorts them out.
| Form | Name | When to use it | State fee |
|---|---|---|---|
| 521 | Statutory Agent Update | An existing, active entity is changing its agent, the agent's address, or the agent is resigning | $25 |
| 525A | Reinstatement and Appointment of Agent | The Secretary of State cancelled the entity for failing to keep an agent, and you are reinstating it and naming an agent in one filing | $25 reinstatement fee |
| 610 | Articles of Organization | A new Ohio LLC is being formed; the first agent is appointed inside the articles | $99, no separate agent fee |
| Multiple agent update | Statutory Agent Update for multiple entities | An agent company is changing its own name or address across every entity it serves | $125 plus $3 per entity (ORC 111.16(R)(2)) |
The 521-versus-525A confusion is the costly one. If your entity's status on the business search reads Cancelled, a Form 521 will be rejected because there is no active entity to update. You need the reinstatement filing, which must be made within two years of cancellation. Our Ohio LLC reinstatement guide covers Form 525A. Corporations, nonprofits, and foreign entities use their own reinstatement forms, but the principle is the same: reinstate first, or reinstate and appoint together, never a plain Form 521.
Form 610 versus 521 is simpler. If the entity does not exist yet, the agent goes in the articles. If the entity exists, every later agent change is a Form 521. The Ohio Articles of Organization guide shows where the original appointment sits on Form 610.
How we file Form 521 for clients
When a business switches its agent to us, you can file it yourself, or we prepare and file Form 521 so the owner never touches the form. You create a portal account, add the entity, and e-sign the appointment consent; we check the entity name and charter number against the Secretary of State's record, prepare the Box 1 update naming our office at 3416 Erhart Road, Litchfield, sign the acceptance of appointment as the new agent, and file it. The state charges $25 to record the change, and we confirm that fee with you before we file.
The appointment shows Pending in the portal until the state record lists us, then Active. From that point, state mail and legal process that reach our office are scanned to your portal the same business day, and lawsuit papers get an urgent alert to every authorized contact and a phone call if nobody acknowledges. The service is $49 per entity per year; the steps and what to expect from your old agent are in our guide to switching Ohio statutory agents, and the fee breakdown is on the pricing page.
Ohio Form 521 questions
What is Ohio Form 521 used for?
Ohio Form 521, the Statutory Agent Update, records three kinds of change to an entity's statutory agent on the Secretary of State's record: appointing a new agent (Box 1), changing the current agent's Ohio address (Box 2), or an agent's resignation (Box 3). It applies to LLCs, corporations, nonprofits, partnerships, and registered out-of-state entities. The state fee is $25 under ORC 111.16(R)(1).
Where do I mail Ohio Form 521?
Mail a regular Form 521 with a $25 check or money order payable to "Ohio Secretary of State" to P.O. Box 788, Columbus, OH 43216. Expedited mailed filings go to P.O. Box 1390, Columbus, OH 43216, with the expedite fee added. The 1-business-day and 4-hour tiers must be delivered in person to the client service center in Columbus rather than mailed.
Does Ohio Form 521 need to be notarized?
No. Form 521 requires signatures but not a notary. A Box 1 appointment needs the signature of an authorized representative of the entity and the new agent's signed acceptance of appointment. A Box 2 address change is signed by the agent or the entity. A Box 3 resignation is signed by the agent alone. On Ohio Business Central, a typed name serves as the signature.
Can Form 521 be used to change an Ohio LLC's principal office address?
No. Form 521 changes only the statutory agent and the agent's address. The principal office address is a separate item on the entity's record and is updated through a different filing, such as an amendment or the entity's next required filing. Many owners list the same address for both, but the two fields are independent, and a Form 521 leaves the principal office untouched.
What charter number goes on Ohio Form 521?
The number the Secretary of State assigned when the entity was first filed in Ohio. For an Ohio LLC or corporation it is called the charter number; for a registered out-of-state entity it is the registration number. It appears on the stamped formation document and on the entity's page in the Secretary of State's business search. Enter it exactly, because the state matches it against the entity name.
Is there a deadline for filing Form 521 after a statutory agent changes?
Ohio law sets no fixed number of days; it requires the filing "forthwith," which means without delay. ORC 1706.09(D) and (E) for LLCs and 1701.07(D) and (E) for corporations impose that duty on the entity when the agent dies, resigns, or moves out of state, and on the agent or the entity when the address changes. In practice, file within days, because the entity has no valid agent until it does.
Can an out-of-state owner sign Form 521 for an Ohio LLC?
Yes. The entity's signature on Form 521 comes from an authorized representative, such as a member or manager, and that person can live anywhere. Only the agent being appointed must be an Ohio resident or an Ohio-addressed business under ORC 1706.09(A). An owner in another state can sign the form electronically on Ohio Business Central and appoint an Ohio commercial agent who signs the acceptance.
What happens if I file Form 521 for a cancelled Ohio entity?
The Secretary of State rejects it. Form 521 updates an active record, and a cancelled entity has none to update. An LLC cancelled for failing to keep an agent must instead file Form 525A, Reinstatement and Appointment of Agent, within two years of cancellation, which restores the entity and names the agent in one filing. Check the entity's status on the business search before filing Form 521.
Does the old statutory agent have to sign Form 521 when I switch to a new one?
No. The old agent plays no part in a Box 1 appointment. The form is signed by the entity's authorized representative and by the new agent on the acceptance of appointment. The state replaces the old agent on the record when it files the form. Telling the old agent is a courtesy, and ending any paid contract with them is a separate matter between you and that agent.
Will I get a receipt or filed copy back after submitting Form 521?
Yes. Once the Secretary of State approves the filing, it returns the Form 521 stamped with the filing date and a document number. Online filings receive it by email as a PDF; mailed filings receive a stamped copy by mail. The same filing then appears in the entity's filing history on the business search, where anyone can view and download it.
Can the agent change on Form 521 take effect on a later date I choose?
No. Unlike some Ohio filings, Form 521 has no delayed effective date field. The change takes effect when the Secretary of State files the form. If you want a new agent in place on a specific future date, file close to that date or coordinate with the new agent so that both agents are reachable during the handoff. Until the filing date, the old agent remains the agent of record.
What address does an Ohio corporation list for its agent on Form 521?
The same kind of address an LLC does: a physical Ohio street address. An individual agent lists the street address of their Ohio residence, and a business serving as agent lists its usual place of business in Ohio, a location open during normal business hours. ORC 1701.07(C) sets the rule for corporations, matching ORC 1706.09(C) for LLCs. P.O. boxes and commercial mail receiving agencies are rejected.
Related Ohio guides
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