Many states require the Registered Agent to have a physical address in the state of formation. As such, if you start a Delaware corporation and live in Arizona, you will have no other choice but to hire a Registered Agent in Delaware.
If your business is now going to operate in multiple states. Not all business actions require you to qualify in each state, however, if you do qualify in another state, you will need to have a Registered Agent for that state.
If you travel frequently or have nonstandard business hours, you should have a Registered Agent. In most states, time is of the essence concerning legal notices. A Registered Agent is there to promptly receive legal notices to preserve your legal rights.
Moving? A Registered Agent with Registered Office service saves you on filing fees and costs associated with address changes.
In this day and age, confidentiality is important to many people. The information provided to forma a business entity is public record. By using a Registered Agent, you can limit how much information is made of the public record.