How to Convert an LLC to C-Corp: Tax and Legal Steps

A common moment in startup life: the founders incorporated as an LLC for simplicity and pass-through taxation, but a venture capital firm now wants to invest. VCs almost universally require a Delaware C-corporation structure for clean preferred-stock issuance, ISO grants, and IPO readiness. The LLC must convert.

This how-to walks the three legal mechanisms for conversion, the tax treatment under IRC § 351 and Treas. Reg. § 301.7701-3, the QSBS implications under IRC § 1202, and the operational tasks that follow.

Three mechanisms for conversion

US state law provides three legal paths from LLC to C-corp:

1. Statutory conversion — under modern state laws (Delaware DGCL § 265, California Corp. Code § 1151), the LLC can directly convert to a corporation by filing a single document. Continuity of legal entity — no new corporation is formed; the existing LLC becomes a corporation. Cleanest method.
2. Statutory merger — the LLC merges into a newly-formed shell C-corp (DGCL § 264). The C-corp is the surviving entity. Members receive corporate stock.
3. Asset transfer + dissolution — the LLC contributes its assets to a newly formed C-corp in exchange for stock, then dissolves. Used when state law does not permit direct conversion.

For a Delaware LLC converting to a Delaware C-corp, statutory conversion under DGCL § 265 is the standard. Most state-of-incorporation LLCs can use the same method.

Tax treatment — the IRC § 351 question

The conversion is generally tax-free under IRC § 351 if structured correctly. Section 351 provides that no gain or loss is recognised when one or more persons transfer property to a corporation in exchange for stock and immediately after the transfer the transferors are in control (80%+ vote and value) of the corporation.

Key requirements for tax-free treatment:

• Property transferred — assets, contracts, IP, goodwill.
• In exchange for stock — common or preferred stock; not cash or notes.
• Control test — transferors collectively own 80%+ immediately after.

If the LLC has been taxed as a partnership (default for multi-member LLCs), the conversion is treated as the partnership terminating and contributing assets to the corporation under Treas. Reg. § 301.7701-3(g)(1)(i). Same § 351 rules apply.

If the LLC has been taxed as a disregarded entity (default for single-member LLCs), the conversion is essentially a § 351 incorporation of the sole proprietor’s assets.

Step 1 — Board and member resolutions

The LLC’s members pass a Plan of Conversion under their Operating Agreement and the state LLC Act. The plan typically requires:

• Approval of all members (or the threshold specified in the Operating Agreement).
• Approval of any preferred-unit holders separately.

The newly-formed C-corp’s incorporators (often the LLC’s managers) authorise issuance of stock under the plan.

Step 2 — File the Certificate of Conversion (Delaware example)

Under DGCL § 265, the founders file with the Delaware Division of Corporations:

• Certificate of Conversion — declares the LLC is converting to a corporation.
• Certificate of Incorporation — establishes the new corporation.
• Filing fee: $164 for the Certificate of Conversion plus $89 for the Certificate of Incorporation (current Delaware fees).

Effective date: the date of filing or a future date specified (up to 180 days).

Step 3 — Adopt corporate bylaws and issue stock

The new C-corp:

• Adopts bylaws (governance document for corporation, replaces the Operating Agreement).
• Issues stock certificates to the former LLC members in proportion to their LLC units.
• Holds the first board meeting to elect officers, ratify the conversion, and authorise opening of bank accounts.
• Adopts a stockholders’ agreement if needed (transfer restrictions, drag-along, tag-along).

Step 4 — Federal tax filings

EIN — the corporation can usually keep the same EIN as the predecessor LLC (Rev. Rul. 73-526). Confirm with IRS via Form 8822-B or by phone.

Tax classification — the corporation files Form 8832 if it wants to be taxed differently from the default (default for a corporation is C-corp). For S-corp election, Form 2553 is filed within 75 days (rare in conversion-to-VC scenarios).

Final partnership return — if the LLC was taxed as a partnership, file a final Form 1065 for the period ending at conversion.

First corporate return — file Form 1120 for the C-corp’s first tax year.

Step 5 — State tax filings

State tax obligations vary:

• Final LLC franchise/annual tax filing.
• First C-corp franchise tax filing (Delaware C-corps file annually with $400+ franchise tax).
• State corporate income tax registrations.
• Sales tax / nexus updates if applicable.

Step 6 — QSBS implications (IRC § 1202)

The big strategic question: does the conversion start the 5-year QSBS holding period under IRC § 1202?

Generally yes — the QSBS holding period starts at conversion, not at the original LLC formation. This is because § 1202 requires the stock to be C-corp stock held for 5 years.

The conversion is therefore a trigger event for QSBS planning. Founders converting to take VC investment should confirm:

• The corporation’s gross assets at conversion are under $50M (QSBS gross asset test).
• The corporation is engaged in a qualifying active business (not banking, services-only, hospitality, etc.).
• All issued stock at conversion qualifies as QSBS.

The 5-year clock then runs from the conversion date. This is a major reason VC-backed founders prefer starting as a C-corp if VC is on the horizon.

Step 7 — Operational tasks after conversion

• Bank accounts — usually need to be re-opened in the corporation’s name. Banks require certified copy of Certificate of Incorporation and EIN confirmation.
• Contracts — review and reassign / restate as needed. Most contracts have automatic continuation language but some require notice.
• Intellectual property — patent, trademark, and copyright assignments may need formal updates with USPTO and the Copyright Office.
• Employment agreements — re-execute in the corporation’s name.
• Insurance policies — update insured name.
• Domain names, logos — formally transfer.

Dialogue: a founder converts before a Series A

🐣 Chick: “VC term sheet says they need a Delaware C-corp. We’re a Delaware LLC.”

🐮 Cow: “Statutory conversion under DGCL § 265. Single filing, continuity of entity.”

🦉 Owl: “Tax-free under IRC § 351 if structured correctly. The control test is clearly met — same members hold 100% before and after.”

🐣 Chick: “QSBS?”

🐮 Cow: “Conversion starts the 5-year clock. So plan for QSBS exit at year 5+ from conversion.”

🦉 Owl: “And confirm the corporation’s gross assets are under $50M at conversion. With seed-stage assets, easy.”

🐣 Chick: “What about the operating agreement?”

🐮 Cow: “Replaced by corporate bylaws and a stockholders’ agreement. Re-draft from scratch.”

🦉 Owl: “And re-execute employment agreements in the corporation’s name. Don’t carry forward LLC-style terms.”

Common mistakes

Treating the conversion as a tax reorganisation only. Conversion has both legal-entity and tax dimensions. Skipping the legal filings (Certificate of Conversion + Certificate of Incorporation) is fatal.

Forgetting to update the EIN registration. While the EIN typically transfers, IRS Form 8822-B notifies the IRS of the entity-classification change.

Issuing stock without Section 83(b) election. Founders receiving restricted stock should file a § 83(b) election within 30 days. Missing this triggers ordinary income taxation as the stock vests.

Skipping the QSBS analysis. Without confirming gross-asset test and active-business test at conversion, founders may mistakenly think they have QSBS when they don’t.

Not re-executing employment agreements. The corporation is a new legal person (in some states). Old LLC employment agreements may not bind employees to the corporation without re-execution.

Ignoring state filings. State tax registrations, franchise tax returns, and sales tax certificates often need updates — easy to miss in the rush of fundraising.

Closing notes

LLC-to-C-corp conversion is a structured, tax-free, single-week process when planned. The pitfalls are operational, not legal — wrong filings, missed QSBS planning, stale agreements. Plan the conversion before the VC term sheet is signed where possible; counsel time is cheaper at $300/hour than diligence-blocking issues at $1,000/hour.

A Gyoseishoshi (行政書士) prepares bilingual conversion plan templates and operational checklists. A US-licensed corporate attorney should draft the Certificate of Conversion, Certificate of Incorporation, bylaws, and stockholders’ agreement. A CPA should run the § 351 analysis and QSBS gross-asset confirmation.

Create your conversion pack with Scrib🐮

¥22,000/month pass for unlimited access to all 18 document types across 7 countries. Start Free Preview →

Disclaimer

Legal information, not legal advice. MmowW Scrib🐮 is operated by a licensed Gyoseishoshi (行政書士) office in Japan. We are not US attorneys or CPAs. For LLC-to-C-corp conversion, consult a US-licensed corporate attorney and CPA.

Sources

• Delaware General Corporation Law § 265 — https://delcode.delaware.gov/title8/c001/sc09/index.html
• IRC § 351 (transfers to controlled corporations) — https://www.law.cornell.edu/uscode/text/26/351
• IRC § 1202 (QSBS) — https://www.law.cornell.edu/uscode/text/26/1202
• IRS, Conversion of LLC to corporation — https://www.irs.gov/businesses/small-businesses-self-employed/limited-liability-company-llc