LLC to Delaware C Corp Conversion: Tax Before Your Seed Round

Is converting an LLC to a Delaware C corp taxable?

Usually not, for federal income tax. A partnership-taxed LLC that converts is treated as contributing all its assets and liabilities to the new corporation for stock, then handing that stock to its members (Rev. Rul. 2004-59). Section 351 makes that exchange tax-free when the transferors control the corporation right after. A corporation that only moves its state of incorporation is usually a "mere change in identity, form, or place of organization" under section 368(a)(1)(F), also tax-free.

The real cost is elsewhere. For an LLC, QSBS covers only gain after conversion day, the conversion year brings extra returns, and the old state may keep taxing the company. A case is not simple when the LLC's debts exceed the tax basis of its assets, new investors buy shares in the same step, founders' shares get new vesting, the company has an S election, or a founder lives abroad.

Gather before deciding:

• The operating agreement or bylaws, with every amendment
• Capital accounts, the latest balance sheet and the tax basis of each asset
• The cap table, including SAFEs, notes, options and profits interests
• Signed IP assignments from founders and contractors
• A supportable value of the business on the planned conversion date
• Prior federal and state returns and the IRS letter assigning the EIN

Which routes move a startup into a Delaware C corporation?

Three routes exist, and the choice changes the paperwork more than the federal tax. Delaware lets an LLC, a partnership or another state's corporation convert straight into a Delaware corporation; the entity continues and only its form changes (8 Del. C. § 265). That works only if the old state's law lets the entity leave. Where it does not, a merger into a new Delaware corporation does the same job (8 Del. C. § 252 covers corporations, § 264 LLCs).

Who must approve comes from the operating agreement or the old state's law; a Delaware LLC follows 6 Del. C. § 18-216. The company's lawyer drafts and files the documents. A Delaware corporation is a corporation for federal tax by law, so no Form 8832 election is needed (26 CFR 301.7701-2(b)(1)). For any business changing structure, not only startups, see changing your business structure.

Is converting a multi-member LLC taxed?

Usually no federal tax arises, with three exceptions. Under Rev. Rul. 2004-59, a partnership-taxed LLC that converts is treated as transferring all its assets and liabilities to the corporation for stock, then liquidating by distributing that stock to its members. Section 351 shelters the first step, but gain can still arise from:

• Debts above basis. If the liabilities the corporation takes on exceed the total tax basis of the assets transferred, the excess is taxable gain (section 357(c)). Self-built software or know-how can have little or no tax basis, so even modest loans can exceed it.
• Cash or other property. Anything received besides stock is taxed, up to the gain (section 351(b)).
• A member's share of the debts. When the corporation takes over the LLC's debts, each member's share of them falls. That drop counts as cash distributed to the member and is taxed to the extent it exceeds the basis of the member's interest (section 752(b); section 731(a)).

The LLC's partnership tax year ends with the conversion, so it files a final return (see the returns table below). An LLC that had already elected to be taxed as a corporation is a corporation for tax; its move follows the corporation rules below.

What about a single-member LLC?

A single-member LLC that is disregarded for tax is treated as its owner, so the owner is the one exchanging the business assets for stock. The regulations treat a disregarded LLC that becomes a corporation by election as its owner contributing all the LLC's assets and liabilities for stock (26 CFR 301.7701-3(g)(1)(iv)). Section 351 then applies, including the debts-above-basis rule.

Rev. Rul. 2004-59 covers only partnership-taxed LLCs. For a state-law conversion of a single-member LLC, that regulation is the closest written rule. The new corporation generally needs its own EIN (see below).

Is reincorporating a California corporation in Delaware taxed?

Usually not. Moving a corporation from California or any other state to Delaware is normally an F reorganization: one corporation changing only its identity, form or place of organization (section 368(a)(1)(F)). Treasury lists six requirements (26 CFR 1.368-2(m)); two catch startups:

• Same owners, same proportions. The same people must own the old and the new corporation in identical proportions immediately before and after.
• An empty new corporation. The new Delaware corporation may hold no property or tax attributes beforehand, apart from a de minimis amount needed to form it.

When the move qualifies, the corporation's tax year does not end (section 381(b); 26 CFR 1.381(b)-1(a)(2)). Shares that were QSBS keep that status and their original acquisition date (section 1202(h)(4)), provided the Delaware corporation is still a qualified small business at the move; otherwise only gain built up before the move can qualify. California may keep taxing the company afterwards (see the old-state section). A corporation moving because its owner moved is covered in moving your company to another state.

Do we need a new EIN after converting an LLC to a corporation?

It depends on whether the tax entity changes. The IRS EIN rules turn on that:

When should we convert: before the SAFE, before the priced round, or at a year start?

Converting before value builds up and before new investors buy in, as its own step, keeps the most gain eligible for QSBS. The reasons:

• Before the priced round. QSBS can cover only gain after conversion day, because the stock's QSBS basis is at least the value of what was contributed (section 1202(i)). And property contributed counts at its value for the gross-asset test, so stock issued when gross assets exceed $75,000,000 before or right after issuance cannot qualify at all (section 1202(d)(2)(B)).
• Before the SAFE. The statute, rulings and regulations cited on this page do not address a SAFE issued by an LLC; its treatment would depend on its terms. Converting first avoids the question.
• Separate from the financing. For a corporation's move, new shareholders entering in the same step can break the identical-ownership requirement of an F reorganization (26 CFR 1.368-2(m)).
• At a year boundary. A mid-year LLC conversion splits the year into a short final partnership return and a short first corporate return. Converting effective at the start of the tax year avoids both short years; fix the effective date and time in the filing so the LLC's last day is clear.

When does QSBS start for an LLC converted to a C corporation?

The QSBS clock starts on conversion day. Stock received for property is treated as acquired on the date of the exchange, and its basis for QSBS is at least the fair market value of the property given (section 1202(i)(1)). So gain up to the conversion-day value can never be excluded; only later growth can.

LLC units are not QSBS, because the exclusion covers only stock in a C corporation (section 1202(c)(1)). In the deemed steps of a conversion, the LLC receives the stock and distributes it to members; section 1202(h)(2)(C) lets a partner keep the partnership's treatment where its conditions are met, including holding the LLC interest when the stock was acquired. The higher basis also raises the "10 times basis" cap, which is compared with the $15,000,000 cap for newer stock. Whether conversion stock counts as newer stock when the LLC interests were held before July 5, 2025 is unsettled: the 2025 law dates stock for the new tiers and cap using the holding-period rules of section 1223 (section 1202(a)(6)(B)), and those can reach back before conversion day. Holding-period tiers and the holder tests are covered in QSBS for founders and early employees; whether an LLC taxed as a corporation can issue QSBS is in LLC or C corporation.

Do founder shares need new vesting and a new 83(b)?

Possibly. Founders who receive shares with new vesting in exchange for interests they already own may have a new section 83 transfer, which opens a fresh 30-day window for an 83(b) election. Rev. Rul. 2007-49 holds that:

• Adding vesting to shares a founder already owns, with no exchange, is not a transfer under section 83.
• Exchanging vested stock for stock subject to vesting in a reorganization, or in a taxable acquisition, is a transfer subject to section 83.
• Under the election, the "amount paid" is the value of what the founder gave up, so the election reports little or no income when the new shares are worth the same.

The ruling does not address an LLC conversion or profits interests. Decide on the election within 30 days of the share issue rather than after it. How and where to file is in founder shares that vest.

Which final and first returns are due in the conversion year?

An LLC conversion ends one tax entity and starts another; a corporation's F reorganization does not. The returns:

The partnership's tax year ends on the date of termination (Form 1065 instructions); due dates are in the Form 1120 instructions. The statements are required by 26 CFR 1.351-3 and 26 CFR 1.368-3; members who transfer units directly, and significant shareholders in a reorganization, may each need their own. The yearly Delaware, IRS and home-state calendar after that is in Delaware C corporation taxes for startups.

What does the old state still charge after we leave?

The old state usually wants a final return for the entity that left, and keeps taxing the company if it still does business there. California shows the pattern:

• A corporation incorporated, registered or doing business in California pays at least the $800 minimum franchise tax (FTB). An LLC organized or doing business there pays the $800 annual tax (FTB).
• "Doing business" includes being commercially domiciled in California (FTB), so a Delaware corporation run from California still owes California tax.
• To close out, the old entity files its final California return with the Final Return box checked and stops doing business there after that year.

Other states have their own exit filings and fees; check them before the effective date. California's first-year rules and the LLC fee are in California minimum tax and LLC fee.

What if we take investor money into the LLC instead?

Investors then become members of a partnership, not shareholders. Each receives a Schedule K-1 and reports a share of the LLC's income or loss (Form 1065 instructions). That also brings:

• Foreign investors. A foreign member is treated as engaged in the US business the partnership carries on (section 875), and the LLC must withhold tax on effectively connected income allocated to that member (section 1446).
• Tax-exempt investors. A tax-exempt member includes its share of the LLC's unrelated business income (section 512(c)).
• No QSBS on units. LLC units are not C corporation stock, so a later conversion starts the QSBS clock at the higher value of that day (section 1202).

Example

These examples are illustrative; figures are in US dollars.

A two-member LLC converts on April 1

Two founders' LLC, worth $2,000,000, converts into a Delaware corporation under Delaware's conversion statute effective at the start of April 1. Its debts are below the tax basis of its assets, each founder's share of them is below the basis of that founder's LLC interest, and no one receives cash, so the conversion creates no federal tax. The LLC files a final Form 1065 for January 1 to March 31, due June 15. The corporation gets a new EIN and files its first Form 1120 for April 1 to December 31, due April 15 of the next year. The founders' QSBS clock starts April 1, and only gain above $2,000,000 can qualify. If their new shares carry vesting, they decide on 83(b) elections within 30 days, by May 1.

A California corporation reincorporates in Delaware by merger

A California corporation merges into a newly formed, empty Delaware corporation. The same shareholders end up with the same proportions, and the seed investors buy shares only after the merger closes. The move is an F reorganization: the company keeps its EIN, files one Form 1120 for the year, and existing QSBS shares keep their dates. Because the team still works in California, the Delaware corporation registers there and is subject to California's $800 minimum franchise tax.

Converting after the priced round instead

An LLC sells units in a priced round and converts a year later, when it is worth $20,000,000. The first $20,000,000 of gain can never qualify for QSBS, and the QSBS holding period starts only on conversion day. Had it converted at $2,000,000 before the round, only that first $2,000,000 would have been locked out. Had it waited until gross assets measured at value exceeded $75,000,000, none of the conversion stock could qualify.

Different for you?

• The company has an S election: see switching an S corporation to a C corporation.
• The startup is Canadian and investors want a Delaware parent: see moving a Canadian startup under a Delaware parent and get cross-border tax help.
• The owner moved states and the company is following: see moving your company to another state.
• You are still choosing a structure: compare in LLC or C corporation.
• Founder shares will vest: the 83(b) filing and its 30-day deadline are in founder shares that vest.
• You need to know whether a holder's shares qualify for QSBS: see QSBS for founders and early employees.
• The LLC's debts exceed its asset basis, investors join in the same step, or a founder lives abroad: the route and timing change the tax; plan the move with business formation help.