Formations
We form your LLC or corporation for you, including filing your documents, securing your EIN and drafting your operating agreement, so you start out fully compliant.
Best for: Entrepreneurs with a new business idea · Anyone looking to make a side gig official · Founders opening a new nonprofit · Anyone looking to open a new LLC or corporation

What's included
Form your new LLC, partnership, corporation, or nonprofit organization in the state of your choice with full compliance.
Choose the right business structure with expert guidance tailored to your goals.
Confirm the perfect business name with unlimited availability checks.
Secure your federal tax ID number (Employer Identification Number) quickly and hassle-free.
Register for all necessary state and local tax IDs to stay compliant.
Get one-on-one support from an experienced advisor every step of the way.
Access and store your business or nonprofit documents securely in one place.
A personalized video walkthrough or two-way video conference of your new business or nonprofit setup and tools.
See everything included (3 more)
Protect your business with customized formation documents.
Optimize tax savings with accurate and timely S-Corp election filing.
You get 24/7 access to our secure client portal to communicate with your advisor and access formation documents at any time.
How it works
A short online intake form and a price quote up-front.
Your advisor handles it and reaches out if needed.
You get your finished work, with support after.
Common questions about this service
Does Portside handle nonprofit incorporation ahead of 990 filing?
Yes. Nonprofit organizations are one of the entity types we form. Portside also assists with IRS Form 1023 for 501(c)(3) status and prepares 990-series returns afterward.
Is the formation service available in every state?
Yes. Formation is available in every state, and we register your entity in the state of your choosing.
Can Portside help me choose between LLC and S-Corp status?
Yes. Our formation service includes an entity type analysis, and we handle formation with tax strategy in mind because Portside also prepares your entity's tax returns. An S-corp election is available as an optional part of formation.
How does my business become an S corp?
By default, all Corporations (regardless of which state they were formed in) are known as “C-Corporations“. So, if you have not specifically filed a form to elect to become an S-Corporation, then your company is still a C-Corporation. By submitting a Form 2553 the IRS and adopting the appropriate corporate resolution, you can become an S-Corporation. If you utilize my S-Corporation Election service, we can prepare the resolution and the form for you and send it to the IRS (they only take submissions via mail or fax at this time). The IRS then confirms via mail within a few months.
Note that some states like California and New Jersey also require their own state version of the S-Corporation Election.
Can I form an LLC or corporation in one state but be based in another?
Yes, there are many reasons a company would form an LLC or corporation in a state outside where they conduct business. Some of those reasons are related to taxation and ownership transparency. Your LLC or corporation would have to be Foreign Qualified in the state of formation, and we can do that for you.
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Who this service is for
New and existing entrepreneurs nationwide who want to form a business entity.
Entity types we help you form
- S corporations
- C corporations
- LLCs
- Partnerships
- Nonprofit organizations
Core formation services
- Registration in the state of your choosing
- Operating agreement
- EIN
- S-corp election (optional)
A registered agent is available for an additional annual fee.
Why form with a tax firm
We handle formation with tax strategy in mind because Portside also prepares your entity's tax returns, including S corporation returns (Form 1120-S). See Business Tax Filings.
Availability
Formation is available in every state.
Related services
Forming a nonprofit? See Nonprofit Tax Filings. Need ongoing books? See Bookkeeping + Accounting. Or return to the Portside home page.
Related Portside guides
- The Benefits of Starting an LLC
- What Is an LLC?
- How to Choose the Right Business Entity
- Business License Requirements: A General Guide
