Summary. Choosing an entity takes an afternoon; living inside one takes years, and the failures that cost real money are almost all maintenance failures. This toolkit covers both halves: the decision framework for entity type and state of formation, then the formation mechanics that create a functioning company rather than a filed one — governing documents reflecting the deal the founders actually made, equity issued with vesting and the tax elections that follow, and the registrations that make the entity real. The second half covers annual filings, foreign qualification, records that support limited liability, buy-sell and deadlock provisions, and the wind-down sequence.

What this toolkit is for, and who should use it

There are two kinds of entity problems. The first is the one everyone asks about — LLC or S corporation — and it usually has a straightforward answer that an accountant can give in twenty minutes. The second is the one nobody asks about until it is expensive: the company that never signed an operating agreement, the co-founder who left with 40 percent of the equity and no obligation to sell it back, the missed annual report that led to administrative dissolution, the second state where the business has operated for three years without registering, and the equity grant where nobody filed the 83(b) election within thirty days.

This toolkit is for founders, small-company owners, and their counsel. It assumes a closely held business with a handful of owners and no institutional investors, though it flags where a venture-backed path diverges.

Roadmap at a glance

  1. The entity decision — form, taxation, and state.
  2. Formation mechanics — filings, agent, EIN, and accounts.
  3. Governing documents — the deal in writing.
  4. Equity — issuance, vesting, and tax elections.
  5. Founder and owner agreements — buy-sell, deadlock, and transfer restrictions.
  6. Getting operational — licenses, tax registrations, insurance, and contracts.
  7. Ongoing compliance — the calendar.
  8. Governance in practice — meetings, consents, and records.
  9. Growth events — new owners, new states, new structures.
  10. Disputes among owners.
  11. Exit and dissolution.

Stage 1 — The entity decision

Four questions decide it.

Liability. Any of the limited liability forms — LLC, corporation, LP with a corporate general partner — protect owners from entity obligations. A general partnership and a sole proprietorship do not, and a general partnership can form by conduct alone, without anyone deciding to create one. Two people operating a business together without a filing have probably formed a general partnership with joint and several liability for each other's acts.

Taxation. An LLC is a pass-through by default, with self-employment tax on the members' distributive shares of business income. An S election can reduce self-employment tax on distributions beyond reasonable compensation, at the cost of payroll administration and eligibility restrictions — 100 shareholders, one class of stock, and no entity or nonresident alien shareholders. A C corporation pays entity-level tax and is the required form for most venture financings and for qualified small business stock treatment under 26 U.S.C. § 1202.

Ownership and flexibility. An LLC operating agreement can allocate profits, losses, distributions, and control in almost any configuration. A corporation is more rigid and more familiar to investors. If outside equity is likely within two years, the Delaware C corporation path avoids a conversion later.

Formalities and cost. Annual reports, franchise taxes, and registered agent fees in every state of registration.

On state of formation, the default is the state where the business operates. Forming in Delaware while operating solely in Mississippi means two sets of filings, two franchise taxes, and no practical benefit for a company with no outside investors. Delaware is worth it for institutional investment, for its case law in a genuine dispute, and for structures where its statutory flexibility matters.

Resources

Stage 2 — Formation mechanics

File the articles with the correct entity name, checking availability and, separately, whether the name infringes an existing trademark — a state filing office clears nothing but its own database. See How to Conduct a Comprehensive Trademark Clearance Search.

Appoint a registered agent at an address that will be monitored. A missed service of process leading to a default judgment is the single most preventable disaster in this area.

Obtain an EIN, open a bank account in the entity's name, and — this is the step that matters — never mix it with a personal account again.

File the beneficial ownership information report where required under the Corporate Transparency Act, 31 U.S.C. § 5336, confirming the current scope of the requirement, which has moved through litigation and rulemaking.

Stage 3 — Governing documents

An LLC needs an operating agreement; a corporation needs bylaws and, where there are multiple owners, a shareholders' agreement. The default statutory rules are a poor substitute: they generally allocate profits by contribution, require unanimity for major actions in some states, and say nothing useful about what happens when one owner wants out.

Cover: capital contributions and whether more can be required; allocation of profits, losses, and distributions, including tax distributions; management structure (member-managed, manager-managed, or a board) and who may bind the company; the list of major decisions requiring supermajority or unanimous approval; officer roles; transfer restrictions and rights of first refusal; buy-sell triggers and valuation; deadlock resolution; admission of new members; dissolution; and indemnification of managers and officers.

Write it for the day the founders disagree, because that is the only day anyone will read it.

Resources

Stage 4 — Equity

Issue the equity with documents: a subscription or restricted stock purchase agreement, actual payment of the consideration, and an entry in the ledger. Equity that everyone talks about but nobody papered is a dispute waiting for a trigger.

Vesting protects the company and the founders who stay. A standard four-year schedule with a one-year cliff, plus acceleration terms for a change of control, is the market convention. Apply it to founders too — the co-founder who leaves in month five with a quarter of the company is the most common and most damaging early-stage failure.

File the 83(b) election within 30 days of receiving restricted equity subject to vesting, 26 U.S.C. § 83(b). The deadline is jurisdictional in practice: it cannot be extended, and missing it can convert a nearly costless tax event at grant into ordinary income at each vesting date on the then-current value. Send it certified mail, keep the receipt, and keep a copy with the equity documents forever.

Maintain the cap table as a living document — every issuance, transfer, option grant, and convertible instrument, with dates and consideration. Reconstruct it once and you will never trust it again.

For option plans, adopt a plan, obtain board and owner approval, set the exercise price at fair market value (a 409A valuation for a corporation), and track the ISO limits and holding periods. For profits interests in an LLC, set the threshold value at grant and document it.

Resources

Stage 5 — Owner agreements

The buy-sell agreement answers the question the operating agreement usually ducks: what happens to an owner's interest on death, disability, divorce, bankruptcy, termination of employment, or a voluntary exit.

Define the triggers, the obligation or option to purchase, the valuation method (a formula, an appraisal process with a defined selection mechanism, or an annually updated agreed value), the payment terms (lump sum, or a note with a rate and term the company can actually service), and the funding — life and disability insurance owned appropriately, which is the difference between a buy-sell that works and one that bankrupts the company.

Add transfer restrictions: no transfer without consent, a right of first refusal, tag-along and drag-along rights, and a prohibition on transfers to competitors.

Add deadlock resolution for a 50-50 company: escalation to the principals, then mediation, then a mechanism with teeth — a shotgun or buy-sell auction provision, a designated tiebreaker, or a defined dissolution path. Without one, a deadlock ends in a judicial dissolution petition, which is slow, public, and value-destroying.

Illustration. Two owners split a company evenly with no deadlock provision. Four years in they disagree about selling. Neither can act. Payroll runs, customers leave, and eighteen months later a court appoints a receiver. A shotgun clause drafted at formation would have resolved it in sixty days at a price one of them chose.

Stage 6 — Getting operational

Tax registrations: federal employment taxes, state withholding, state unemployment insurance, sales and use tax in every state where nexus exists (which after South Dakota v. Wayfair, Inc., 585 U.S. 162 (2018), can arise from economic activity alone), and local business taxes.

Licenses and permits: general business license, professional licensing, industry-specific permits, health and safety, and any zoning or occupancy approval.

Insurance: general liability, property, workers' compensation in every state with an employee, professional liability or E&O, cyber, employment practices liability, and, once there is a board or outside investors, D&O.

Contracts: a customer agreement or terms of service, a vendor form, an NDA, employment and contractor agreements with IP assignment, and an offer letter template.

Resources

Stage 7 — The compliance calendar

Build it once and it runs itself:

  • Annual or biennial report in the state of formation and in every state of qualification.
  • Franchise tax and minimum entity taxes.
  • Registered agent renewal and address verification.
  • Federal and state tax returns, including the entity return and any composite or withholding filings for nonresident owners.
  • Payroll tax deposits and returns, which reach responsible persons personally under 26 U.S.C. § 6672 regardless of the entity form.
  • Sales tax returns in every nexus state.
  • Business license renewals and professional license renewals.
  • Insurance renewals and certificate updates.
  • Beneficial ownership updates within the required window after a change.
  • Annual meeting or written consent, and the cap table reconciliation.

Confirm good standing annually in every state. Administrative dissolution for a missed report is common, quietly removes the liability shield in some states for obligations incurred while dissolved, and can require reinstatement with penalties before the entity can sue.

Stage 8 — Governance in practice

Hold the annual meeting or execute the consent. Document major decisions by resolution. Approve conflict transactions with disinterested approval and full disclosure. Keep the minute book current rather than reconstructing it during a financing or a sale, when the gaps become diligence findings.

Understand the fiduciary duties that attach: care, loyalty, and good faith, protected in their exercise by the business judgment rule where the process is sound. In an LLC, many states permit the operating agreement to modify or eliminate some duties — but not the implied covenant of good faith and fair dealing. Know what your document did.

Resources

Stage 9 — Growth events

A new state. Foreign qualify before, not after. Add payroll registration, unemployment insurance, workers' compensation, sales tax, and any local licensing. Review employment policies against the new state's law.

A new owner. Confirm the securities exemption for the issuance, amend the operating agreement or shareholders' agreement, update the cap table, and confirm the new owner signs the buy-sell and transfer restrictions.

A conversion or restructuring. Converting an LLC to a corporation before a financing, forming a holding company, or adding a subsidiary each carries tax consequences that must be modeled before the filing, not after.

Debt. A bank loan will require personal guarantees, a security agreement, UCC filings, and financial covenants. Read the covenants: a distribution restriction or a change-of-control default can constrain the owners' plans for years.

Stage 10 — Disputes among owners

Most closely held company disputes are about compensation, control, or an exit. Before litigation, check the documents: many disputes are resolved by a buy-sell provision nobody remembered.

Where the documents fail, the claims are typically breach of fiduciary duty, breach of the operating agreement, oppression of a minority owner (a statutory remedy in many states, sometimes including a court-ordered buyout), an accounting, access to books and records — which is a fast, cheap, and often decisive first step — and judicial dissolution.

Preserve documents early, keep the company's counsel role clear (company counsel represents the entity, not the individual owners, and should say so in writing), and consider mediation before positions harden. In a small company, litigation among owners frequently destroys more value than the disputed amount.

Resources

Stage 11 — Exit and dissolution

For a sale, see the M&A path. For a wind-down, follow the sequence: owner approval; cessation of new business; notice to known creditors and publication for unknown ones on the statutory timeline; payment or provision for claims before distributions to owners; final payroll, final tax returns marked final, and cancellation of registrations and licenses; termination of leases and contracts; and articles of dissolution in the state of formation plus withdrawal filings in every state of qualification.

Distributing assets to owners ahead of creditors creates personal liability, which is the single most common wind-down error. Keep the records for the applicable limitations periods, maintain any tail insurance coverage, and confirm that guarantees given by owners are released rather than merely dormant.

Resources

Stage 12 — The questions founders actually ask

"Do I really need an operating agreement if I own 100 percent?" Yes. It is evidence of separateness in a veil-piercing analysis, it is required by lenders and landlords, it is the first document a buyer asks for, and it is where you record the authority you are relying on when you sign as manager. Single-member LLC formalities matter more, not less.

"Can I be my own registered agent?" In most states, yes, if you have a physical street address in the state and someone is there during business hours. The risk is that your address becomes public and that a process server arrives when nobody is in. For a home-based business, a commercial agent is worth the annual fee.

"When do I have to register in another state?" When you are "transacting business" there, which each state defines differently but which generally includes having employees, an office, inventory, or ongoing in-state operations. Merely selling into a state from outside usually is not enough for qualification purposes — but it may well create a tax nexus, which is a separate question with a lower threshold after Wayfair.

"My co-founder left. Can I just take their equity back?" Only if a document says so. Without vesting, a repurchase right, or a buy-sell trigger tied to departure, the departing owner keeps the equity, keeps the voting rights that come with it, and keeps the right to a share of any future sale. This is why vesting is the highest-value hour of a formation engagement.

"We've been operating for three years and never held a meeting. How bad is it?" For an LLC, most statutes provide that failure to observe formalities is not itself a ground for personal liability. For a corporation, it is one factor among several, and rarely decisive alone. The serious exposure is not the missed meeting; it is commingled funds, undocumented owner loans, and inadequate capitalization. Fix those first, then start holding annual consents going forward — and do not backdate anything.

"What is the fastest way to lose the liability shield?" Pay personal expenses from the business account. It is provable from a single bank statement, it appears in nearly every successful piercing case, and it is entirely within the owner's control.

"Should I convert my LLC to a corporation?" If institutional investors are coming, yes, and do it before the term sheet rather than during the diligence period. Model the tax consequences first — a conversion can be tax-free or expensive depending on the entity's history, its liabilities, and the mechanics used.

"Who is my lawyer in a founder dispute?" Company counsel represents the company. If the founders are adverse, each needs separate counsel, and company counsel should say so in writing early, because the alternative is a disqualification motion and a privilege fight on top of the underlying dispute.

Resources

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This toolkit is educational and not legal advice. Entity law, tax treatment, and compliance obligations vary by state and change over time. Consult qualified corporate counsel and a tax advisor before forming, converting, or dissolving an entity.