Yes. Subsidiaries are separate legal entities, distinct from the parent companies that own them. Once a subsidiary files its formation documents with a state, it can sign contracts, own property, hire employees, borrow money, and sue or be sued in its own name. That separation also builds a liability wall: creditors of the subsidiary generally cannot reach the parent’s assets, and the parent’s exposure is capped at what it invested in the subsidiary’s stock. The wall has real exceptions, though, and both the corporate law and the tax rules treat the relationship in ways that reward discipline and punish sloppiness.
What Separate Entity Status Actually Gives the Subsidiary
A subsidiary comes into existence when its articles of incorporation or articles of organization are filed with a state’s secretary of state. Once the state issues a charter or certificate, the subsidiary is recognized as its own legal person. It gets its own federal employer identification number for tax filings and banking.1Internal Revenue Service. Get an Employer Identification Number It operates under its own bylaws. It can enter contracts, buy real estate, own trademarks and patents, and be a party to lawsuits.
Because the law treats the corporation as separate from its shareholders, the subsidiary is responsible for its own debts and obligations. If a customer sues over a product or a breached contract, the subsidiary is the defendant. These rights and responsibilities stay with the subsidiary regardless of who owns its stock, and they do not merge into the parent simply because the parent owns 100% of the shares.
A parent does not need to own every share to control a subsidiary. Ownership of more than 50% of the voting stock is generally enough to make a company a parent. A wholly owned subsidiary gives the parent total strategic control and full financial risk; a partially owned subsidiary shares that risk with minority shareholders but requires the parent to account for their interests in major decisions.
How the Separation Limits the Parent’s Liability
Limited liability is the main reason companies use subsidiaries rather than running new ventures as internal divisions. The parent’s financial exposure is capped at the capital it put into the subsidiary’s stock. If the subsidiary defaults on a loan or loses a lawsuit, creditors can pursue only assets held by the subsidiary. They cannot reach the parent’s bank accounts, real estate, or other holdings.
This protection covers tort judgments and contract claims alike. A workplace injury award against the subsidiary does not touch the parent’s balance sheet. Courts respect the boundary because it encourages investment: without it, a failure in one line of business could bankrupt an entire corporate family. The protection holds so long as the two companies genuinely function as separate businesses with their own capital, records, and management.
When Courts Set the Separation Aside
The doctrine of piercing the corporate veil lets a court disregard the subsidiary’s separate status and hold the parent responsible for its debts and judgments. Courts do not use it lightly. They look for evidence that the subsidiary was a shell or instrument of the parent rather than a real, independent business. The factors that come up most often:
- Undercapitalization — the parent launched the subsidiary without enough money to cover its reasonably foreseeable liabilities, including insurance and basic operating costs.
- Commingling funds — the parent and subsidiary shared bank accounts, or one paid the other’s expenses without documentation.
- Ignoring formalities — no separate board meetings, no minutes, no independent decisions.
- Fraud or injustice — the corporate form was used to deceive creditors or evade obligations.
The U.S. Supreme Court addressed this framework in United States v. Bestfoods, holding that a parent corporation is not liable for its subsidiary’s actions on a derivative theory unless the corporate veil is properly pierced.2Justia U.S. Supreme Court Center. United States v. Bestfoods The Court confirmed that even CERCLA, the federal environmental cleanup statute, does not override the long-standing rule that veil-piercing requires misuse of the corporate form.
Piercing does not only run upward. Under an enterprise liability theory, courts can sometimes reach sideways to a sister subsidiary owned by the same parent when a corporate group operates its subsidiaries as a single economic unit, sharing employees, pooling revenue, and ignoring formal boundaries. This horizontal piercing is less common, but the underlying lesson is the same: treating affiliated companies as interchangeable invites courts to do the same.
Parent Liability That Doesn’t Require Piercing
Even when the veil stays intact, a parent can face liability under theories that do not treat parent and subsidiary as the same entity. The separation protects the parent from the subsidiary’s conduct; it does not protect the parent from its own.
Direct Operator Liability
Bestfoods drew a sharp line between derivative liability, which needs veil-piercing, and direct liability, which does not. Under CERCLA, any person who operates a polluting facility is directly liable for cleanup costs, and that can include a parent. The Supreme Court defined “operate” narrowly for this purpose: the parent must have managed, directed, or conducted operations specifically related to hazardous waste disposal or environmental compliance at the subsidiary’s facility.2Justia U.S. Supreme Court Center. United States v. Bestfoods Placing officers on the subsidiary’s board or setting general corporate policy is not enough. Running the facility’s day-to-day waste operations is.
Contractual Guarantees
The liability wall protects against involuntary claims. A parent can waive it voluntarily by signing a guarantee for the subsidiary’s obligations, and in practice this happens often. Banks routinely require a parent guarantee before lending to a thinly capitalized subsidiary, and commercial landlords may demand one before signing a lease. Once the parent signs, it is directly liable for the guaranteed debt if the subsidiary cannot pay.
Joint Employer Exposure
When a parent exercises significant control over a subsidiary’s workforce, making hiring and firing decisions, setting wages, or directing daily work, courts and federal agencies may treat the parent as a joint employer. Under the single-employer doctrine, regulators weigh four factors: how interrelated the operations are, whether the companies share management, common ownership, and — most importantly — whether the parent controls labor relations centrally. A joint-employer finding can make the parent responsible for unfair labor practice claims, collective bargaining duties, and other employment obligations of the subsidiary.
Tax Treatment Follows Legal Form, With Options
Because the subsidiary is a separate legal person, it is generally a separate taxpayer with its own returns. Federal tax law then offers several elections that let corporate groups choose how the pieces fit together.
Consolidated Returns
When a C corporation parent owns at least 80% of the voting power and value of a subsidiary’s stock, the group can file a single consolidated federal income tax return.3Office of the Law Revision Counsel. 26 USC Ch 6 – Consolidated Returns Consolidation lets the group offset one subsidiary’s losses against another’s profits. It does not merge the companies’ legal identities: each subsidiary still keeps its own books and financial records.
Qualified Subchapter S Subsidiaries
An S corporation can elect to treat a wholly owned domestic subsidiary as a qualified subchapter S subsidiary, or QSub. Once elected, the subsidiary is not treated as a separate corporation for tax purposes, and all of its income, deductions, assets, and liabilities flow up to the parent’s return.4Office of the Law Revision Counsel. 26 US Code 1361 – S Corporation Defined The subsidiary must be 100% owned by the S corporation and cannot be an ineligible corporation type such as a bank or insurance company. If QSub status ends because the parent sells shares, the subsidiary is treated as a new corporation for tax purposes and cannot re-elect QSub status for five years without IRS permission.
Check-the-Box Elections
For other eligible entities, the check-the-box regulations let the owner choose the federal tax classification. A single-owner eligible entity can file Form 8832 to elect treatment as either a disregarded entity, in which case its income flows through to the owner, or as a corporation.5Internal Revenue Service. Form 8832 Entity Classification Election With no election, a domestic single-owner entity defaults to disregarded status. The election can be made retroactive up to 75 days or prospective up to 12 months. After changing a classification, you generally cannot change it again for 60 months.
Note the split these elections create. A disregarded LLC or a QSub is invisible to the IRS but still a separate entity in every other respect: it still has its own contracts, its own liability shield, its own lawsuits. Tax classification and legal status are two different questions.
Foreign Subsidiaries Add Reporting Duties
A U.S. parent that owns a foreign subsidiary picks up reporting obligations on top of the tax rules above. U.S. persons who control a foreign corporation, meaning more than 50% of voting power or value, must file Form 5471 with their annual tax return; shareholders owning at least 10% of a controlled foreign corporation also have filing obligations.6Internal Revenue Service. Instructions for Form 5471 Penalties for missing the filing are steep: a $10,000 base penalty per foreign entity per year, an additional $10,000 for every 30-day period the failure continues after IRS notice up to $50,000, and a reduction in foreign tax credits that starts at 10% and grows the longer the filing is late.7Office of the Law Revision Counsel. 26 US Code 6038 – Information Reporting With Respect to Certain Foreign Corporations and Partnerships
U.S. parents also include their share of a controlled foreign corporation’s global intangible low-taxed income (GILTI), which generally captures foreign earnings above a 10% return on the subsidiary’s tangible business assets abroad. For tax years beginning in 2026, a 40% deduction applies, producing an effective federal rate near 12.6%. Foreign taxes the subsidiary already paid can offset up to 80% of the GILTI liability, but unused GILTI foreign tax credits cannot be carried forward or back.6Internal Revenue Service. Instructions for Form 5471
Keeping the Separation Real
Separate entity status is not self-sustaining. The factors courts examine when deciding whether to pierce the veil are the same ones you should be guarding against in daily operations.
Corporate Formalities
Each entity should hold its own board meetings and keep its own minutes. The subsidiary’s board should make its own strategic and operational decisions rather than rubber-stamping directives from the parent. Contracts, leases, and purchase orders should be signed by the subsidiary’s own officers, not by parent executives acting on the subsidiary’s behalf. Annual state filings and a current registered agent are cheap evidence that the subsidiary is a functioning business.
Financial Separation
Parent and subsidiary need separate bank accounts, and money should not move between them without documentation. When the parent funds the subsidiary, structure the transfer as a formal loan or equity contribution with the paperwork to match. Intercompany loans should carry arm’s-length interest rates — the rate a lender would charge an unrelated borrower with a similar credit profile — and the lender must enforce repayment on the loan’s terms.8Internal Revenue Service. Effect of Group Membership on Financial Transactions Under Section 482 and Treas Reg 1.482-2(a) If the IRS decides an intercompany rate does not reflect what the borrower could get outside the group, it can adjust the rate and assess additional tax.
Shared Services and Intercompany Pricing
Corporate groups often share HR, IT, or accounting across entities. That is fine, but the arrangement should be governed by a written intercompany services agreement that charges the subsidiary a fair price for what it receives, benchmarked against what an unrelated vendor would charge. The agreement should also confirm that management, control, and direction of the subsidiary remain with its own board and officers.
Employment Practices
Subsidiaries should run their own payroll and hold their own employment contracts. Even when some HR functions are shared, the subsidiary’s management should keep authority over hiring, firing, work assignments, and pay for its own workforce. This is not just a formality: letting the parent control the subsidiary’s employees is the fact pattern that produces joint-employer liability.
Handled with discipline, a subsidiary delivers exactly what it is designed to deliver: a separate legal person that can carry a line of business, its debts, and its risks on its own balance sheet. Handled loosely, it becomes an argument for a court to treat the whole group as one.