You landed a client, agreed on a price, and now you need to send an invoice, except you never formed an LLC and you don't have an EIN. Does that mean you can't bill this client professionally? No. It means you're operating as a sole proprietor, which is the default legal status of anyone doing freelance work without having filed to become something else, and it's a completely normal, completely legal way to invoice clients.
A lot of new freelancers stall out here, assuming an invoice needs a registered business behind it to be legitimate. It doesn't. Here's exactly how to invoice as a freelancer without an LLC or EIN, and where the actual line is between what's legally required and what's just a nice-to-have.
You're already a sole proprietor, whether you registered or not
If you're doing freelance work and haven't filed paperwork to form an LLC, S-corp, or other entity, you're automatically a sole proprietorship in the eyes of the IRS. There's no form to fill out to become one. You report your freelance income and expenses on Schedule C, attached to your personal Form 1040, using your own name and Social Security number. This is the structure the vast majority of new freelancers operate under, often for years, and it's entirely legitimate to invoice clients this way.
What actually goes on the invoice when you don't have a business name
Your invoice needs a name and a way for the client to identify who to pay. As a sole proprietor, that name is simply your legal name, unless you've registered a "doing business as" (DBA) name with your state or county, in which case you can use that instead. You don't need a registered business name, a logo trademark, or a business address separate from your home to send a professional-looking invoice. What matters is that the invoice clearly states who did the work, what was done, and what's owed. Our freelance invoice elements checklist covers every field a solid invoice needs, LLC or not.
Do you need an EIN to invoice clients?
No. An Employer Identification Number is required if you hire employees, form certain business entities, or want to keep your Social Security number off client-facing paperwork for privacy reasons. None of those apply to most solo freelancers just starting out. You can legally use your Social Security number on a W-9 and invoice clients without ever applying for an EIN.
That said, plenty of freelancers get an EIN anyway, for one specific reason: privacy. Handing your SSN to every client who requests a W-9 means it's floating around in more inboxes than most people are comfortable with. You can apply for an EIN directly through the IRS for free, and it lets you keep your SSN off that paperwork entirely, even while you're still a sole proprietor with no LLC. It's optional, not required, but worth considering if you're billing more than a couple of clients.
What clients actually need from you before they pay
Most business clients will ask for a completed W-9 before they cut you a check, especially if they expect to pay you more than $600 in a year and will need to issue you a 1099-NEC. This is separate from your invoice and doesn't require an LLC or EIN either. You fill it out with your name (or DBA), address, and either your SSN or EIN, whichever you're using. Sending the W-9 promptly when a client asks for one is one of the fastest ways to avoid payment delays that have nothing to do with your actual invoice.
Where sole proprietorship actually has a downside
Freelancers Union has resources specifically for independent workers navigating this exact question, and their general guidance lines up with the IRS: liability and tax planning are worth revisiting as your income grows, but they're separate from whether you can invoice today. Being unincorporated doesn't affect your ability to invoice or get paid, but it does mean you and your business are legally the same entity, which matters for liability, not billing. If a client dispute ever escalated to a legal claim, a sole proprietorship doesn't separate your personal assets from your business activity the way an LLC does. That's a real consideration as your income grows, but it's a liability and tax planning question, not an invoicing one. It's worth a conversation with an accountant once your freelance income becomes a meaningful part of your earnings, but it shouldn't hold up sending your next invoice.
Setting payment terms as a sole proprietor
Nothing about your invoice's payment terms changes because you're unincorporated. You can set Net 15, Net 30, due on receipt, or require a deposit, exactly the way an LLC would. Our guide on freelance payment terms breaks down which terms fit which situations, and if this is your first invoice to a new client, this walkthrough covers what to include so the first impression is a strong one regardless of your business structure.
How nvoyce handles this
Nvoyce doesn't require a registered business, an LLC, or an EIN to generate professional invoices. You set up your profile with your name or DBA, and nvoyce builds a polished invoice with a Stripe payment link embedded, so clients can pay instantly no matter how you're structured legally. As your business grows and you eventually do form an LLC, updating your invoice details takes a few minutes, not a full account rebuild.
Nvoyce Solo is $19.99 a month for unlimited invoices and proposals with every feature included, and you can try it free for 7 days with no credit card required.
Frequently Asked Questions
Can I legally invoice clients without an LLC?
Yes. As a sole proprietor, which is the default status if you haven't registered another entity, you can invoice clients using your own name and Social Security number. No LLC is required.
Do I need an EIN to send invoices as a freelancer?
No. An EIN is optional for most solo freelancers. It's useful mainly for keeping your Social Security number off client paperwork, but you can invoice and get paid using your SSN instead.
What should I put as my business name on an invoice if I don't have one?
Use your legal name, or a registered DBA if you have one. You don't need a formal business name to send a professional invoice.
Will clients take me less seriously without an LLC?
Most business clients care about clear communication, a professional-looking invoice, and reliable delivery, not your legal structure. Plenty of established freelancers operate as sole proprietors for years.
When should I consider forming an LLC instead of staying a sole proprietor?
Once your freelance income is substantial or you're concerned about personal liability, it's worth talking to an accountant. It's a tax and liability decision, not something that affects your ability to invoice.
Do I still need to pay taxes on freelance income without an LLC?
Yes. As a sole proprietor, you report freelance income and expenses on Schedule C with your personal tax return and pay self-employment tax, exactly as you would with most other business structures.