How to Change the Registered Agent for a Connecticut Corporation

Your registered agent is the corporation's official contact for lawsuits and state mail, so the information on file has to stay accurate. Several situations call for a change, and in each one the record is only correct once you actually file the update.

Common triggers

• You're switching to a commercial service. Owners often start out serving as their own agent, then move to a professional service for privacy and reliability once the business grows.
• Your individual agent is stepping down. A friend, employee, or co-founder who agreed to serve may want out, or may be leaving the company.
• The agent moved. If your agent relocates within Connecticut, the registered office address on file has to be updated even though the person is the same.
• You're leaving a service you're unhappy with. Slow forwarding, missed notices, or high renewal costs are all reasons corporations change providers.
• The agent resigned on their own. A registered agent can resign by notifying the state, which starts a clock for you to appoint a replacement.

Whatever the reason, the corporation must have a valid agent at all times — so the goal is to make the change without ever leaving the position empty.

Connecticut handles registered agent changes through the Business One Stop portal. The filing updates the agent name, the registered office address, or both on the corporation's record.

The basic process

1. Line up the new agent first. Confirm the new person or service has agreed to serve and has a valid physical Connecticut street address. If you're hiring a commercial service, they'll give you the exact address and consent details to use.
2. Log in to Business One Stop and open your corporation's record. Connecticut ties filings to your registered business, so you'll pull up the existing entity rather than starting from scratch.
3. Submit the change of agent filing, entering the new agent's name and registered office address exactly as provided.
4. Pay the state fee and submit. Online filings process quickly, and the updated agent appears on the public record once accepted.

What you'll need on hand

• The corporation's exact legal name as registered.
• The new agent's full name and physical Connecticut street address.
• Confirmation that the new agent consents to serve.
• Login access to the Business One Stop account tied to the corporation.

The single most important rule when changing agents is that the corporation must never be without one. A gap, even a short one, is a period where a lawsuit could be served with no one to receive it.

Get the new agent in place before the old one leaves

If you are hiring a commercial service, sign up with them and get their consent and address before you file the change — many services complete the state filing for you as part of onboarding. If your current agent resigned first, appoint the replacement as quickly as possible; a resigning agent's departure becomes effective on a set timeline, and you don't want the position sitting empty when it does.

Update your own records too

Once the state accepts the change, update anywhere you've listed the agent internally — your corporate records book, your compliance calendar, and any documents that reference the registered office. Keep the confirmation from the state with your records as proof the change was made.

Most registered agent changes are routine. The ones that go wrong usually trace back to a handful of avoidable errors.

What to watch for

• Assuming a new agent is on file when they aren't. Telling a service you want them as your agent is not the same as the state record being updated. Confirm the filing was accepted.
• Using a P.O. box or an out-of-state address. The registered office has to be a physical Connecticut street location. A mailbox address will be rejected.
• Forgetting consent. Connecticut expects the new agent to have agreed to serve. Naming someone who hasn't consented can invalidate the appointment.
• Letting the annual report and the agent change drift apart. If your annual report is also due, make sure both reflect the correct current agent so the record doesn't contradict itself.
• Skipping the confirmation. Always verify in the public business search that the change went through before you consider it done.
• Misspelling the legal name. The filing has to match the corporation's exact registered name. A typo or an old version of the name can cause the update to be rejected or misapplied.

A quick sanity check before you file

Run through a short checklist before you submit: the new agent has consented, their address is a physical Connecticut street location, the corporation's legal name is spelled exactly as registered, and your Business One Stop login pulls up the right entity. Two minutes of verification here prevents a rejected filing and a scramble to redo it.

If you want to hand the switch off entirely, Mainstay Filing can become your Connecticut registered agent and file the change of agent for you. We provide the registered office address, confirm our consent to serve, and submit the update through the state portal so the record is correct without you navigating the interface yourself.

Because we manage the filing end to end, there is no gap where the corporation is left without an agent — we put the new appointment in place and confirm the state accepted it. After that, we receive service of process and state mail at our Connecticut address, scan it, and notify you promptly. If you are moving away from a service that has been slow or unreliable, this is often the cleanest way to make the change and keep your corporation reachable and in good standing.