Key Takeaways
- Oregon does NOT clearly extend charging-order-as-exclusive-remedy protection to single-member LLCs — Law v. Zemp, 362 Or 302, 408 P.3d 1045 (2018)
- Oregon does not legally require a written operating agreement, but you should have one anyway
- Oregon applies its corporate veil-piercing framework to LLCs by analogy, with the leading case Amfac Foods, Inc. v. International Systems & Controls Corp., 294 Or 94, 654 P.2d 1092 (1982), setting out a three-part test: control, improper conduct, and resulting injury. No Oregon case has been found applying a heightened standard specifically to single-member LLCs, but given the charging-order question is also unresolved here, clean formalities carry extra weight.
- Oregon has a graduated personal income tax across 4 brackets, with a top marginal rate of 9.90% on income over $125,000 (2026) — one of the steeper state income tax burdens in the country, offset somewhat by Oregon's lack of a state sales tax — so a single-member LLC owner pays that rate on the LLC's pass-through profit in addition to federal income tax and self-employment tax.
- Same-day single-member LLC formation and a solo-owner operating agreement available through LLC Attorney, at no markup on state fees
A single-member LLC is a common way solo owners in Oregon structure their business — but Oregon is one of the few states where the state's highest court had a direct chance to settle whether a charging order is the exclusive remedy for an LLC member's interest, and chose not to.
This guide covers exactly how an Oregon single-member LLC works in 2026 — the unresolved charging-order question left open by Law v. Zemp, no written operating agreement requirement, alter-ego risk, and how the LLC is taxed at both the federal and state level.
What Is a Oregon Single-Member LLC?
A single-member LLC (SMLLC) is a limited liability company with exactly one owner. It's formed the same way as any other Oregon LLC — same Articles of Organization, same registered agent requirement — the only difference is ownership structure. By default, the IRS treats a single-member LLC as a "disregarded entity," meaning its income passes through to the owner's personal tax return rather than being taxed at the entity level.
Does Oregon Protect Single-Member LLCs From Charging Orders?
A charging order limits a creditor of an LLC member (a personal creditor, not a business creditor) to collecting distributions from that member's interest — rather than letting the creditor seize LLC assets outright or force a sale. Many states extend this protection to multi-member LLCs without question, but treat single-member LLCs differently since there's no other member to protect from an unwanted co-owner.
Genuinely unresolved. ORS § 63.259 allows a court to issue a charging order and even appoint a receiver over a member's interest, but the statute contains no "exclusive remedy" language at all. The Oregon Supreme Court had a chance to settle the question in Law v. Zemp, 362 Or 302, 408 P.3d 1045 (2018) — it held courts may include ancillary provisions in a charging order only to the extent they don't unduly interfere with LLC management, but it explicitly did not hold that a charging order is the exclusive remedy. Whether a creditor can go further than a charging order against a single-member LLC's interest in Oregon remains an open question the state's highest court has already had a chance to resolve and chose not to.
Do I Need an Operating Agreement for My Oregon SMLLC?
No. Oregon does not require a written operating agreement — ORS § 63.057 permits an operating agreement "if any," written or oral. Given the unresolved charging-order question, a well-drafted written operating agreement is still worth having as evidence your LLC is a genuinely separate entity.
An operating agreement can name a successor member and include transfer-on-death language, letting your Oregon LLC interest pass to an heir without going through probate — worth including even though Oregon doesn't require the document itself.
Is a Oregon Single-Member LLC Easier to Pierce?
Courts everywhere apply the corporate veil doctrine to LLCs, but with only one member, there's no second owner's independent conduct to point to as evidence the company is a genuinely separate entity — which is why single-member LLCs face more practical scrutiny than multi-member LLCs even where the legal test is identical on paper.
Oregon applies its corporate veil-piercing framework to LLCs by analogy, with the leading case Amfac Foods, Inc. v. International Systems & Controls Corp., 294 Or 94, 654 P.2d 1092 (1982), setting out a three-part test: control, improper conduct, and resulting injury. No Oregon case has been found applying a heightened standard specifically to single-member LLCs, but given the charging-order question is also unresolved here, clean formalities carry extra weight.
Formalities to maintain: keep a dedicated business bank account and never commingle personal and LLC funds, sign every contract and check in the LLC's name (not your own), maintain a written operating agreement even though it isn't required, keep basic records of major decisions and distributions, and adequately capitalize the LLC for the business it actually runs.
How Is a Oregon Single-Member LLC Taxed?
By default, the IRS disregards a single-member LLC for federal tax purposes — you report business income on Schedule C of your personal return, and you'll owe self-employment tax (Social Security and Medicare) on net earnings. You can elect corporate taxation instead by filing Form 8832 (C-corp) or Form 2553 (S-corp) if that fits your situation better — but unlike a multi-member LLC, a single-member LLC can never elect partnership taxation, since that requires more than one owner.
Oregon has a graduated personal income tax across 4 brackets, with a top marginal rate of 9.90% on income over $125,000 (2026) — one of the steeper state income tax burdens in the country, offset somewhat by Oregon's lack of a state sales tax — so a single-member LLC owner pays that rate on the LLC's pass-through profit in addition to federal income tax and self-employment tax.
Oregon LLCs owe a $100 annual report fee due each year on the LLC's formation anniversary — a flat filing fee, not an income-based tax, and it applies regardless of whether the LLC made any profit.
Does My Oregon SMLLC Need an EIN?
Technically, a single-member LLC with no employees can use the owner's SSN for federal tax filing purposes. In practice, get an EIN anyway (it's free and instant from the IRS) — nearly every Oregon bank requires one to open a business account, and using an EIN instead of your SSN keeps your personal information off business paperwork and vendor forms.
Law v. Zemp (2018) is the controlling Oregon Supreme Court case and explicitly left open whether a charging order is the exclusive remedy — this is not a settled question awaiting a future test case, it's a question the state's highest court already had and declined to resolve. Treat Oregon charging-order protection as unresolved rather than either confirmed or denied.
How to Set Up Your Oregon Single-Member LLC
If You Do It Yourself
Step 1 — File your Articles of Organization.
Form your LLC the same way any other Oregon LLC is formed — the state doesn't use a different form or process for single-member LLCs.
Step 2 — Appoint a registered agent.
Oregon calls this role a "Registered Agent" — you can serve as your own if you have a physical in-state address, or use a commercial service for privacy and reliability.
Step 3 — Draft an operating agreement built for a solo owner.
No. Oregon does not require a written operating agreement — ORS § 63.057 permits an operating agreement "if any," written or oral. Given the unresolved charging-order question, a well-drafted written operating agreement is still worth having as evidence your LLC is a genuinely separate entity. An operating agreement can name a successor member and include transfer-on-death language, letting your Oregon LLC interest pass to an heir without going through probate — worth including even though Oregon doesn't require the document itself.
Step 4 — Understand your charging-order exposure.
Genuinely unresolved. ORS § 63.259 allows a court to issue a charging order and even appoint a receiver over a member's interest, but the statute contains no "exclusive remedy" language at all. The Oregon Supreme Court had a chance to settle the question in Law v. Zemp, 362 Or 302, 408 P.3d 1045 (2018) — it held courts may include ancillary provisions in a charging order only to the extent they don't unduly interfere with LLC management, but it explicitly did not hold that a charging order is the exclusive remedy. Whether a creditor can go further than a charging order against a single-member LLC's interest in Oregon remains an open question the state's highest court has already had a chance to resolve and chose not to.
Step 5 — Maintain formalities to avoid alter-ego risk.
keep a dedicated business bank account and never commingle personal and LLC funds, sign every contract and check in the LLC's name (not your own), maintain a written operating agreement even though it isn't required, keep basic records of major decisions and distributions, and adequately capitalize the LLC for the business it actually runs.
Step 6 — Get an EIN and open a business bank account.
Technically, a single-member LLC with no employees can use the owner's SSN for federal tax filing purposes. In practice, get an EIN anyway (it's free and instant from the IRS) — nearly every Oregon bank requires one to open a business account, and using an EIN instead of your SSN keeps your personal information off business paperwork and vendor forms.
Step 7 — Handle ongoing state compliance.
Oregon LLCs owe a $100 annual report fee due each year on the LLC's formation anniversary — a flat filing fee, not an income-based tax, and it applies regardless of whether the LLC made any profit. Oregon has a graduated personal income tax across 4 brackets, with a top marginal rate of 9.90% on income over $125,000 (2026) — one of the steeper state income tax burdens in the country, offset somewhat by Oregon's lack of a state sales tax — so a single-member LLC owner pays that rate on the LLC's pass-through profit in addition to federal income tax and self-employment tax.
Step 8 — Watch for Oregon-specific SMLLC traps.
The most common Oregon-specific mistake is assuming Law v. Zemp settled the charging-order-exclusivity question simply because it's the state's leading case on the topic — it didn't. The Oregon Supreme Court addressed a narrower question (what ancillary provisions a charging order may include) and explicitly left exclusivity unresolved. Separately, Oregon's registered agent must have a genuine physical street address (ORS § 63.111) — a commercial mail-receiving service or virtual office alone will not satisfy this requirement.
If LLC Attorney Does It for You
- Submit your business details at llcattorney.com — LLC name, registered agent, and ownership information.
- LLC Attorney forms your Oregon single-member LLC and drafts a solo-owner operating agreement, including transfer-on-death provisions to keep your business out of probate.
- Receive your finished formation documents, EIN, and operating agreement, plus access to flat-fee attorney consultations (no retainer) for asset-protection questions as your business grows.
When Should You Talk to an Attorney About Your Oregon Single-Member LLC?
Talk to an attorney before finalizing your Oregon single-member LLC's structure if asset protection from personal creditors is a primary goal — Law v. Zemp's explicit non-resolution of exclusivity means you can't rely on a clear guarantee the way you could in a state like Wyoming or Ohio — or if you're weighing whether to hold significant assets in an Oregon LLC versus a stronger charging-order state.
Is Oregon a State Where SMLLC Asset Protection Matters More?
Oregon is worth extra attention for a single-member LLC owner specifically because the state's highest court already looked directly at the charging-order-exclusivity question in Law v. Zemp and chose not to settle it — which is different from simply having no case law on point. If asset protection is a primary reason you're forming an LLC, Oregon's unresolved posture, combined with its comparatively high income tax, is worth weighing against forming your primary asset-holding entity in a state with explicit exclusivity language instead.
What You Actually Get With LLC Attorney's Oregon SMLLC Formation
The part of forming an Oregon single-member LLC that generic templates miss is Law v. Zemp — most multi-state formation services don't flag that Oregon's highest court explicitly declined to resolve charging-order exclusivity. LLC Attorney builds your operating agreement around that genuine uncertainty from the start.
- Single-member LLC formation in Oregon, starting at $0 + state fees.
- Solo-owner operating agreement with transfer-on-death provisions, starting at $49.
- Charging-order, alter-ego, and tax considerations addressed for your specific state — not a generic multi-state template.
- Access to professionally trained Business Success Advisors at no charge, plus flat-fee attorney consultations (no retainer) for asset-protection questions.
Oregon's single-member LLC charging-order protection is a real open question, not a guarantee, and LLC Attorney makes sure your operating agreement and formalities account for that honestly.
Ready to Form Your Oregon Single-Member LLC?
LLC Attorney forms single-member LLCs in Oregon and drafts an operating agreement built for a solo owner, starting at $0 + state fees. See our full pricing for all service tiers.
Frequently Asked Questions
Genuinely unresolved. ORS § 63.259 contains no "exclusive remedy" language, and in Law v. Zemp, 362 Or 302 (2018), the Oregon Supreme Court addressed what provisions a charging order may include but explicitly did not decide whether it's the exclusive remedy. This is an open question for both single- and multi-member LLCs in Oregon, not a confirmed protection.
No, Oregon does not legally require a written operating agreement for a single-member LLC — ORS § 63.057 permits one to be written or oral. Given the unresolved charging-order question, a written one is still worth having.
Oregon applies a standard three-part veil-piercing test (control, improper conduct, injury) from Amfac Foods, Inc. v. International Systems & Controls Corp. (1982), the same regardless of member count. No Oregon case applies a heightened standard specifically to single-member LLCs, but given the unresolved charging-order question, clean formalities matter more here.
No. Oregon's LLC Act does not address single-member LLCs specifically; Law v. Zemp arose from the general charging-order statute rather than an SMLLC-specific provision.
No. Partnership taxation requires at least two members. An Oregon single-member LLC can only be taxed as a disregarded entity (the default), or elect C-corp or S-corp taxation instead.
Technically optional if the LLC has no employees (you can use your SSN instead), but get one anyway — it's free from the IRS, nearly every Oregon bank requires it to open a business account, and it keeps your SSN off business paperwork.
Yes. Your operating agreement can name a successor member and include transfer-on-death language, letting your LLC interest pass to an heir outside of Oregon's probate process — even though Oregon doesn't require the operating agreement itself.
Some Oregon single-member LLC owners consider adding a nominal second member specifically because Law v. Zemp's non-resolution of the exclusivity question creates genuine uncertainty for a sole owner. This has real tradeoffs in tax treatment and governance, so it's worth discussing with an attorney rather than doing informally.
Yes. LLC Attorney forms single-member LLCs in Oregon, including a solo-owner operating agreement, starting at $0 + state fees.