Registering a Foreign Corporation in Texas: Form 301 and Your Registered Agent

Under Texas law a corporation chartered anywhere other than Texas, in another state or abroad, is a foreign corporation. Picture a Delaware corporation that opens a Texas office: it is foreign here, even though nothing about it is international. Section 9.001 of the Business Organizations Code requires a foreign corporation to register first, ahead of any Texas business, and to keep the registration current for as long as the business continues.

Texas calls the act registration. Certificate of authority is the older name that some guides still use, and the Secretary of State's FAQ explains that an application for registration is simply that document under its former name. For a for-profit corporation the filing is Form 301, titled Application for Registration of a Foreign For-Profit Corporation. Registering does not create a second company. Your corporation keeps a single identity, governed by the law of the state that chartered it, and the registration adds permission to operate in Texas plus a public record of its directors and its Texas agent.

The Business Organizations Code never defines "transacting business." The Secretary of State's working test is whether the entity keeps an office or staff in Texas, or carries out any of its stated purposes here. The office also says it cannot give a legal opinion on whether your particular facts cross the line.

Activities the statute carves out

Section 9.251 lists sixteen activities that are not transacting business. The ones a typical corporation runs into:

• Litigation, including administrative and arbitration proceedings and settlements
• Board, shareholder or other internal meetings held in Texas
• Keeping a bank account
• Selling through an independent contractor
• Interstate commerce
• One-time deals wrapped up inside 30 days that are not repeats of the same kind of sale
• Owning real or personal property in Texas "without more"

Section 9.252 says the list is not exhaustive, so leaving an activity off it does not turn that activity into a trigger. A storefront, warehouse or office in Texas, employees who work here, or a steady pattern of carrying out the corporation's business in the state are the facts the Secretary of State's test is aimed at. Owning a building is not one of them, though a lawyer would look at what you do with it. If your footprint falls somewhere in between, take the question to a Texas attorney. The fee for asking is small next to the late charges described below.

A foreign corporation files Form 301 with the Secretary of State. The state's fee is $750, the figure printed on the form and on the Secretary of State's fee schedule (Form 806). Expedited handling is sold separately, starting with a standard tier at $50, but nothing requires it.

SOSPortal, the Secretary of State's business filing system, took over from the retired SOSDirect and SOSUpload systems at the end of September 2026, so older pages that name those two are out of date. Online payment is by ACH or card, and a card payment carries a surcharge of 25 cents plus 2.25% of the total. Paper filers send the form, with payment by check or money order, to the Austin post office box on the instructions.

What the application asks for

The corporation's name exactly as written in its charter (plus an assumed name if that name is unavailable), its federal employer identification number or a note that none exists yet, where and when it was incorporated, the business it will pursue in Texas, when Texas operations started or will start, its principal office, the Texas registered agent and registered office, and the name and address of each director, with at least one required. The filing is a public record, so the Secretary of State suggests a business or post office box address instead of a home address. The form need not be notarized, but the signer certifies under penalty of perjury that they have authority to sign and that the named agent consented.

Form 301 asks for no home-state certificate of any kind, whether good standing or existence. Item 5 is a statement by the signer that, on the filing date, the corporation currently exists as a valid corporation under the laws of the place where it was incorporated. That statement is the only proof of home-state status the form wants, and the statute (section 9.004) calls for the statement and nothing beyond it.

The practical result is that there is no document to order, no age limit to watch and no waiting on another state's office before you file. Keep the exact name from your charter documents, the formation date, your federal employer identification number and your directors' addresses within reach. A checklist that tells you to get a good standing certificate for Texas is describing some other filing office.

Corporate name

The name needs a recognized corporate term: corporation, incorporated, company, limited, or an abbreviation of one of them. If your home-state name has none, item 2A lets you add one for use in Texas. The name also cannot be the same as, deceptively similar to, or similar to a name already on file. When yours is unavailable, item 2B lets the corporation qualify under an assumed name, and the instructions add that an assumed name certificate on Form 503 must be filed too, for $25.

The registered agent

Section 5.201 makes every foreign corporation name both a registered agent and a registered office, kept continuously in Texas. Either a resident individual or an organization with Texas authority to do business can act as agent. The corporation cannot be its own agent, and whoever you name must have consented. The registered office is a Texas street location where a process server can hand papers to the agent. An address that is only a mail-receiving service or an answering service does not qualify. When the agent is an organization, the statute also requires an employee to be present at that office in normal business hours to accept papers.

A corporation based elsewhere typically has no Texas address and no Texas resident to name, which is why most pick a commercial agent. A later change of agent or office is a statement of change (Form 401) at $15, and the instructions point to a penalty under section 21.802 when it is not filed within 30 days.

Texas does not ask a registered foreign corporation for an annual report at the Secretary of State. The yearly obligation sits with the Comptroller of Public Accounts, which administers the franchise tax. A corporation subject to it files the franchise tax report together with the Public Information Report by May 15, and the first report falls due on May 15 of the following year. For the 2026 and 2027 report years, annualized revenue up to $2,650,000 means no tax is due, though the Public Information Report is still filed. Ask the Comptroller whether other Texas tax accounts apply to your business.

The registration must be amended when the corporation changes its name or the business stated in the application, on or before the 91st day after the change, for $150. The Secretary of State may revoke a registration if the corporation fails to maintain an agent or office, to file a required report, or to pay a required fee, and does not correct the problem before the 91st day after notice is mailed. Notices go to the registered office, so the agent's address has to stay current.

Withdrawing

A corporation that stops doing business in Texas but continues to exist at home files Form 608, a certificate of withdrawal, for $15. A taxable corporation attaches the Comptroller's certificate of account status (form 05-305), and a printout from the Comptroller's website does not satisfy that requirement.

Texas combines limits on court access, money and enforcement.

• No lawsuits. Under section 9.051, an unregistered foreign corporation cannot bring a case in a Texas court over a claim arising from its Texas business until it registers.
• A late filing fee. Once a corporation has operated in Texas past the 90 day mark without registering, the late fee is the product of the registration fee and the count of calendar years of unregistered business (section 9.054). A partial year is billed as a whole one. A corporation that started in 2024 and registers in 2026 has three calendar years behind it, so the late fee is $2,250 on top of the filing fee.
• Back fees and taxes. The attorney general can sue under section 9.052 for the fees and taxes the corporation would have owed had it registered when first required, plus penalties and interest.
• An injunction. On the attorney general's application, a court can bar an unregistered corporation from transacting business in Texas.

Several things stay the same. The corporation's contracts remain valid, it can still defend itself when sued, and its shareholders and directors do not become personally liable for the corporation's debts because registration was missed.

Mainstay Filing's foreign qualification service registers a corporation formed elsewhere. It prepares Form 301 and submits it to the Texas Secretary of State, and it includes the Texas registered agent free for the first year, then renews the agent at $149 a year. The state's own fee is $750. You supply the home-state details, such as the formation date, the jurisdiction and the directors, and the application is built from them. Texas asks for no home-state certificate on this form, so there is nothing for Mainstay Filing to order.

The service stops at the registration. Franchise tax reports, Public Information Reports and any other Comptroller filings stay with you or your accountant. The current checkout lines and total are on the Texas foreign qualification page, and the agent service is described on the Texas registered agent page. Mainstay Filing prepares paperwork and acts as your agent. It does not give legal advice or act as your lawyer, so whether your Texas activity requires registration is for you and your attorney to decide.