October 14, 2026
Yes. A Delaware corporation has to register, or “foreign qualify,” in any state where it’s doing business, and every startup is doing business in the state where it’s headquartered or where its founders work. Selling to customers in a state over the internet doesn’t by itself require qualification there, though it can create sales tax obligations, which is a separate question. Register in your home state soon after you incorporate. It’s a routine filing that usually takes a few days to a few weeks.
Key takeaways
Each state’s corporate law decides when an out-of-state company is “transacting business” there and must register. The common thread is a regular, ongoing presence: an office, a founder or employee working there, or staff who run operations there. Most state statutes also list activities that don’t count, including selling into the state through interstate commerce, soliciting orders that are accepted elsewhere, holding board meetings and opening a bank account.
For a Delaware startup run from New York, California or anywhere else, the answer is clear. The company is doing business where its founders work, so it qualifies there.
They trigger payroll obligations right away. Once you have an employee working in a state, you register there for income tax withholding and unemployment insurance, and your payroll provider will usually handle it. Whether one remote employee also means the company must foreign qualify varies by state. Some states treat any employee working there as doing business; others look for more. Our practical advice is to register in states where your employees regularly work, because the cost is modest and it avoids questions later in diligence. See What Should Founders Know About Startup Employment Law?
No. Selling products or services to customers in a state, without people or an office there, generally isn’t doing business for qualification purposes. That’s a different question from sales tax.
Since the Supreme Court’s 2018 decision in South Dakota v. Wayfair, states can require out-of-state sellers to collect sales tax once their sales into the state pass a set threshold, even with no physical presence. That’s “economic nexus” for sales tax, and it’s separate from foreign qualification. If you sell taxable products or services into many states, work with your accountant or a sales tax service to track it. Income tax nexus follows its own rules too.
You file an application with the state’s Secretary of State (the name varies by state), usually with a certificate of good standing from Delaware, and appoint a registered agent in that state. The company keeps its Delaware registered agent as well. You’ll also list a principal office address, which can be a founder’s home or a virtual office. See Registered Agent.
Filing fees vary by state, usually from about $100 to several hundred dollars, plus a registered agent and the state’s annual or biennial report. Some states add a minimum tax. California, for example, charges corporations doing business there an $800 annual minimum franchise tax. Some states also want an initial report soon after you register. California, for example, requires a Statement of Information within 90 days of qualifying, and filing late carries a penalty. These costs come on top of Delaware’s annual report and franchise tax. See Delaware Franchise Tax.
The company can owe back fees, taxes, penalties and interest for the period it should have been registered. In most states, an unregistered company also can’t bring a lawsuit in that state’s courts until it registers. Its contracts generally remain valid. The more common cost is practical: investors’ and buyers’ lawyers check qualification in diligence, and fixing it then is slower and more expensive.
Yes. The new Delaware corporation registers in the state where the LLC was operating, and the LLC’s old registration is closed out or updated, depending on the state.
For more, see Where Should I Incorporate My Startup? and I Just Incorporated My Startup. Do I Need to Do Anything Else? If you’d like help registering your company in your home state, contact us.
