When a sole proprietorship “becomes” a One Person Corporation or OPC, its existing contracts do not automatically transfer to the new corporation. The sole proprietor and the OPC are legally different contracting parties. Unless the contract, the law, and the other party allow a transfer, the original owner may remain personally responsible even after the OPC begins operating under the same brand, from the same address, and with the same customers.

The practical solution is a controlled transition: identify every active contract, determine whether it may be assigned, secure the required consent, document the OPC’s assumption of obligations, and obtain an express release of the sole proprietor whenever possible.

A Sole Proprietorship Does Not Legally “Convert” Into an OPC

The word “conversion” is commonly used in business discussions, but it can be misleading.

A sole proprietorship has no legal personality separate from its owner. The owner personally owns the assets, enters into contracts, earns the income, and answers for the business’s debts. The Supreme Court confirmed this in Excellent Quality Apparel, Inc. v. Win Multi-Rich Builders, Inc., G.R. No. 175048, February 10, 2009. In that case, a corporation formed after the original sole proprietorship could not simply treat itself as the same party to the sole proprietor’s earlier contract. (Supreme Court E-Library)

An OPC, by contrast, is a corporation with one stockholder under Republic Act No. 11232, or the Revised Corporation Code of the Philippines. It acquires a juridical personality separate from its stockholder when the Securities and Exchange Commission issues its Certificate of Incorporation. (LawPhil)

The Revised Corporation Code provides procedures for converting an ordinary stock corporation into an OPC and vice versa. It does not provide an automatic statutory conversion of a DTI-registered sole proprietorship into an OPC. In practice, the owner:

Incorporates a new OPC with the SEC.
Transfers selected assets and rights to the OPC.
Arranges for the OPC to assume selected obligations.
Migrates employees, permits, accounts, and operations.
Retires or closes the sole proprietorship’s registrations.

Until those steps are completed, the proprietor and the OPC may be operating side by side as two legally distinct taxpayers and contracting parties.

The Basic Rule: Contracts Bind the Parties Who Signed Them

Article 1159 of the Civil Code states that contractual obligations have the force of law between the parties and must be performed in good faith. Article 1311 adds that contracts generally take effect only between the parties, their assigns, and their heirs, subject to exceptions for rights and obligations that are non-transferable by law, by agreement, or by their nature. (LawPhil)

Suppose Juan dela Cruz signed a three-year supply agreement as:

Juan dela Cruz, doing business under the name JDC Trading

A year later, Juan incorporates JDC Trading OPC. The OPC is not automatically substituted as the supplier. Unless the customer accepts a valid assignment or novation, Juan remains the contracting party.

The result does not change merely because:

The OPC uses the same trade name.
Juan owns all the OPC’s shares.
The business has the same employees and office.
The OPC performs deliveries or accepts payments.
The customer knows that Juan incorporated the business.
The OPC’s financial statements record the contract as an asset or liability.

Actual performance by the OPC may help show the parties’ conduct, but novation is not presumed. The Supreme Court has repeatedly held that replacing a debtor requires the creditor’s consent and a clear intention to release the original debtor. (LawPhil)

Assignment, Assumption, and Novation Are Not the Same

These three concepts are often mixed together, but they produce different legal effects.

Assignment of contractual rights

An assignment normally transfers a right, such as the right to collect an account receivable.

For example, a sole proprietor may assign to the OPC the right to collect ₱300,000 from a customer, provided the contract does not prohibit assignment and the right is not personal or otherwise non-transferable.

Under Article 1626 of the Civil Code, a debtor who pays the original creditor before learning of the assignment is generally released from the obligation. Written notice is therefore important even where prior consent is not legally required. (LawPhil)

An assignment of rights alone does not necessarily transfer the proprietor’s duties under the same contract.

Assumption of obligations

An assumption agreement states that the OPC will perform the proprietor’s obligations.

This may be effective between the proprietor and the OPC, but it does not necessarily release the proprietor from liability to the customer, lender, landlord, or supplier. The counterparty did not automatically agree to accept a different debtor.

Novation

Novation replaces or materially changes an existing obligation. Articles 1291 to 1293 of the Civil Code recognize novation through a change in the obligation’s principal conditions, substitution of the debtor, or substitution of the creditor.

For a change of debtor, the creditor’s consent is essential. The clearest document is usually a tripartite novation agreement signed by:

The sole proprietor;
The OPC; and
The other contracting party.

The agreement should state that the OPC replaces the sole proprietor from a specified effective date and whether the proprietor is fully released from future obligations, past obligations, or both. (LawPhil)

What Happens to Common Business Contracts?

Type of contract	Usual legal position	Practical document or action
Customer receivables	May often be assigned unless prohibited or personal	Deed of Assignment plus written notice to customer
Customer service or supply contracts	Rights and obligations may require counterparty consent	Assignment and Assumption Agreement or tripartite novation
Supplier payables	Proprietor remains liable unless supplier releases the proprietor	Supplier consent and novation agreement
Bank loans and credit lines	Cannot normally be shifted to the OPC without bank approval	New facility, loan assumption, or formal novation
Commercial lease	Assignment generally requires the lessor’s consent unless the lease provides otherwise	Lessor’s written consent, lease amendment, or new lease
Franchise or dealership	Usually subject to contractual and regulatory approval	Franchisor or principal’s written approval
Employment contracts	Employees cannot simply be transferred as business property	Written employment transition preserving lawful benefits and tenure where agreed
Licenses and government permits	Usually issued to a specific person or juridical entity	New application, amendment, or agency approval
Insurance policies	Coverage may not automatically follow the new insured entity	Endorsement or new policy in the OPC’s name
Personal-service contracts	Often non-transferable because identity or skill is material	Counterparty consent or a new contract
Personal guarantees	Remain binding unless the creditor releases or replaces them	Written release, cancellation, or replacement guarantee

Commercial leases require special attention

Article 1649 of the Civil Code provides that a lessee cannot assign a lease without the lessor’s consent unless the lease itself allows it. This means the OPC should not merely occupy the premises and pay rent under the proprietor’s lease without documenting the arrangement. (LawPhil)

The landlord may require:

Updated financial documents;
A new security deposit;
A corporate secretary’s certificate or OPC written resolution;
A personal guarantee from the stockholder;
An amendment to the permitted use clause;
Updated insurance; or
A completely new lease.

Without written consent, the landlord may argue that the assignment violates the lease and may pursue remedies allowed by the contract and law.

Bank loans do not move merely because the business assets moved

A bank approved the loan based on the proprietor’s identity, income, credit history, collateral, and guarantees. The OPC cannot simply begin paying the installments and assume that it has become the borrower.

Unless the bank approves a novation:

The sole proprietor remains the borrower.
Existing collateral remains governed by the original security documents.
Personal guarantees remain effective.
The OPC’s payments may be treated merely as payments made on the proprietor’s behalf.
The transfer of secured assets may breach loan covenants.

Banks may also require fresh know-your-customer documents, beneficial ownership disclosures, board or written resolutions, and updated collateral appraisals.

The Sole Proprietor’s Old Liabilities Do Not Disappear

Incorporating an OPC does not retroactively convert personal business obligations into limited-liability corporate obligations.

If the proprietor signed a supplier contract before the OPC existed, the supplier can ordinarily continue to pursue the proprietor unless there has been a valid release or novation. Transferring inventory, equipment, and customers to the OPC does not by itself extinguish the debt.

The OPC may agree to pay the debt, but without creditor consent, both practical and legal problems remain:

The creditor may still sue the proprietor.
Payments by the OPC may be recorded as advances or related-party transactions.
The proprietor may have a reimbursement claim against the OPC.
The creditor may refuse to recognize the OPC as the new debtor.
The transfer may be challenged if designed to place assets beyond creditors’ reach.

Limited liability is also not absolute. Section 130 of the Revised Corporation Code places on the single stockholder the burden of showing that the OPC was adequately financed. When the stockholder cannot prove that OPC property is independent from personal property, the stockholder may become jointly and severally liable for the corporation’s debts. (LawPhil)

Step-by-Step Process for Moving Existing Contracts to the OPC

1. Incorporate the OPC before signing transfer documents

The OPC must first legally exist. Applications are processed through the SEC’s eSPARC registration system.

The OPC’s Articles of Incorporation must identify its single stockholder, nominee, alternate nominee, principal office, purpose, and capital structure. The corporate name must include “OPC.” The SEC system may use authentication in place of traditional notarization for qualifying registration documents, although other transaction documents may still need notarization. (Esparc)

Do not sign a contract in the OPC’s name before its incorporation unless the document expressly addresses pre-incorporation liability and later adoption.

2. Create a complete contract register

List every active arrangement, including informal ones.

The register should identify:

Contracting party;
Contract date and expiration date;
Remaining receivable or payable;
Security deposit or customer advance;
Auto-renewal date;
Assignment clause;
Change-of-control clause;
Consent or notice requirement;
Personal guarantee;
Governing law and dispute forum;
Required government approval; and
Person responsible for securing consent.

Include contracts that are easy to overlook, such as software subscriptions, online marketplace accounts, courier arrangements, merchant-acquiring facilities, cloud services, vehicle leases, insurance, advertising accounts, and equipment maintenance agreements.

3. Classify each contract

Place each agreement into one of four categories:

Transferable by notice – consent may not be required, but written notice should be delivered.
Transferable only with consent – written approval is required before or at transfer.
Non-transferable – a new contract must be signed.
Not worth transferring – complete, terminate, or allow it to expire under the proprietor.

Read the entire contract. An assignment restriction may appear under headings such as “successors and assigns,” “change in legal status,” “transfer of business,” “change of ownership,” or “miscellaneous.”

4. Set one operational cut-off date

Choose a clear effective date for the transition.

Before that date, the sole proprietor should generally issue invoices and official documents under the proprietor’s registered name and TIN. After that date, the OPC should issue its own invoices under its separate BIR registration.

Document how the parties will treat:

Work partly completed before the cut-off;
Customer deposits and retainers;
Returns, warranties, and refunds;
Unbilled services;
Installment receivables;
Advance payments to suppliers;
Gift certificates and loyalty credits;
Pending claims; and
Taxes withheld under the old or new TIN.

A vague transition date frequently causes mismatched invoices, withholding tax certificates, books, bank deposits, and customer records.

5. Prepare the appropriate transfer documents

A transition may require several documents rather than one general “deed of transfer.”

Document	Main purpose
Contract Assignment	Transfers contractual rights
Assumption Agreement	Records the OPC’s undertaking to perform obligations
Novation Agreement	Replaces the proprietor with the OPC and addresses release
Deed of Assignment of Receivables	Transfers identified accounts receivable
Deed of Sale or Transfer of Assets	Transfers equipment, inventory, vehicles, or other property
Intellectual Property Assignment	Transfers trademarks, copyright, domains, or proprietary materials
Lessor’s Consent	Approves assignment or replacement of the tenant
Written OPC Resolution	Records approval by the OPC’s single stockholder or director
Counterparty Notice	Informs customers or debtors of the effective transfer and payment instructions
Release and Quitclaim	Releases the proprietor from specified contractual liabilities

Each document should attach a detailed schedule. Avoid blanket language such as “all business contracts are transferred” when the contracts, counterparties, amounts, and effective dates are not identified.

6. Obtain express releases, not merely signatures acknowledging notice

A counterparty’s acknowledgment that it received a notice is not necessarily consent to substitute the OPC.

The document should answer:

Does the OPC assume obligations arising before the transfer date?
Does the proprietor remain liable for earlier breaches?
Is the proprietor released from future obligations?
Are warranties made before the transfer still personal obligations?
Do deposits and prepaid amounts move to the OPC?
Will guarantees continue?
Does the original contract remain otherwise unchanged?

The phrase “the original party is released and discharged” is materially different from “the OPC will perform the obligations going forward.”

7. Transfer the supporting assets and systems

A contract may be useless to the OPC if the necessary assets remain personally owned.

Check the transfer of:

Inventory and equipment;
Vehicles and registrations;
Trademarks and copyrighted materials;
Domain names and social-media accounts;
Customer databases;
Telephone numbers;
Merchant accounts and payment gateways;
Security deposits;
Warranty records; and
Business bank balances.

Registered intellectual-property rights may require recordal with the Intellectual Property Office of the Philippines. IPOPHL recognizes assignments and recordals affecting trademark and copyright ownership. (IPOPHL)

What Happens to Employees?

The OPC is a different employer from the individual proprietor. Employees should not simply be told that their payslips will now carry a corporate name while everything else remains undocumented.

Employment transition documents should clearly address:

Recognition of original hiring dates;
Continuity of tenure;
Salary and position;
Leave credits;
13th-month pay;
Commissions and incentives;
Retirement benefits;
Existing disciplinary matters;
Unpaid wages and reimbursements;
SSS, PhilHealth, and Pag-IBIG reporting; and
Whether the proprietor or OPC is responsible for obligations accrued before the transfer.

Philippine jurisprudence recognizes that employees cannot simply be moved from one employer to another as though they were business assets. A poorly handled resignation-and-rehire arrangement may create illegal-dismissal, separation-pay, or continuity-of-service disputes. (Supreme Court E-Library)

In practice, the cleanest arrangement for a continuing business is usually a written employment assumption or new employment agreement that expressly states whether past service will be recognized. The proprietor should also settle or allocate all accrued labor obligations as of the cut-off date.

The change in legal personality must be reflected in employer registrations. Existing agency forms specifically recognize changes from a single proprietorship to a corporation, but the documentary process may require proof of the new SEC registration and retirement of the old business registration. (Social Security System)

BIR Registration, Asset Transfers, and Closure of the Sole Proprietorship

The OPC needs its own tax registration

The OPC is a separate non-individual taxpayer and ordinarily obtains its own TIN and BIR Certificate of Registration. Corporate registration commonly uses BIR Form No. 1903 together with the SEC Certificate and organizational documents. (Bureau of Internal Revenue)

The proprietor should not continue using the individual business’s invoices, TIN, or books for sales legally made by the OPC.

Transferring assets may have tax consequences

The transfer of inventory, equipment, vehicles, real property, intellectual property, or other assets may be treated as a sale, contribution, exchange, or other taxable disposition depending on its structure.

Possible consequences include:

Income tax or capital gains tax;
Value-added tax or percentage tax;
Creditable withholding tax;
Documentary stamp tax;
Local transfer tax;
Registration fees; and
Electronic Certificate Authorizing Registration requirements for titled property.

A transfer of property to the OPC in exchange for shares may qualify for non-recognition treatment under Section 40(C)(2) of the National Internal Revenue Code, as amended by Republic Act No. 11534 or the CREATE Act, when the statutory control and consideration requirements are satisfied. A prior BIR ruling is generally not required for covered tax-free exchanges, but the transaction remains subject to documentary requirements, substituted-basis rules, and post-transaction audit. It should not be treated as automatically tax-free merely because the same person owns the sole proprietorship and the OPC. (LawPhil)

The old BIR registration must be formally closed

Stopping operations does not automatically close the sole proprietorship’s BIR account.

Under BIR Revenue Memorandum Circular No. 47-2026, closure documents include BIR Form No. 1905, applicable ending inventory, unused invoices and accounting documents, and original BIR permits or registration records. Final or short-period returns must also be filed.

For qualifying micro taxpayers with complete documents, no open cases, and no outstanding liabilities, the circular provides for issuance of tax clearance within three working days and removes mandatory closure audit. Larger taxpayers and taxpayers with pending audits may face a much longer process. A proprietor who fails to apply for closure remains liable for tax filings, taxes, and penalties until the BIR closure is completed.

DTI Business Name and Local Business Permits

DTI’s Business Name Registration System is for sole proprietorships. The DTI business name registration does not turn into an SEC corporate registration when the OPC is formed. The OPC must use its SEC-approved corporate name, although an approved trade name may also be reflected where allowed. (BNRS)

DTI permits cancellation of a business-name registration because of cessation or sale or transfer of the business. The cancellation process is available through the DTI BNRS cancellation service. (BNRS)

For the mayor’s or business permit, many LGUs treat a change from sole proprietorship to corporation as retirement of the old permit followed by a new corporate application. Procedures vary by city or municipality. The usual requirements include the SEC Certificate, Articles of Incorporation, proof of address, lease or title, barangay clearance, tax declarations, regulatory clearances, and proof of retirement of the sole proprietorship.

Do not assume that an amended signboard or new SEC certificate is enough. A permit issued to an individual proprietor does not automatically authorize the OPC to operate.

Special Considerations for Foreign Owners

A foreign natural person may form an OPC, but the corporation’s permitted activities and foreign ownership remain subject to the Constitution, the Foreign Investments Act, special laws, and the current Regular Foreign Investment Negative List.

The 13th Regular Foreign Investment Negative List was promulgated through Executive Order No. 113 in 2026. Activities appearing on that list remain subject to the stated nationality limits and conditions.

Foreign owners should also consider:

Whether the business activity permits 100% foreign ownership;
Minimum capitalization rules that may apply to foreign-owned domestic market enterprises;
Restrictions on ownership of Philippine land;
Work authorization for foreign officers actively working in the Philippines;
Bank remittance and inward-investment documentation; and
Whether permits issued to the foreign individual can be reissued to the OPC.

When a transfer or consent document is signed abroad, the receiving Philippine agency, bank, landlord, or notary may require an apostille from a Hague Apostille Convention country. Documents from non-participating countries may require the applicable consular authentication process. Philippine consular posts also provide notarization services in qualifying cases. (Philippine Embassy in New Delhi)

Common Mistakes That Leave the Owner Personally Liable

Using one generic deed for everything

Assets, receivables, debts, leases, permits, employment relationships, and intellectual property have different transfer requirements. One broad deed rarely solves every issue.

Assuming the counterparty’s silence means consent

Silence may not satisfy a written-consent requirement. The proprietor may remain liable even though the OPC has been performing the contract for months.

Moving obligations without obtaining a release

An agreement between the proprietor and OPC does not bind a creditor who did not consent. The owner should look for express release language.

Issuing invoices under the wrong TIN

Using the proprietor’s invoices for OPC sales—or OPC invoices for the proprietor’s earlier transactions—can create tax, withholding, accounting, and collection problems.

Transferring the lease without informing the landlord

This may breach both Article 1649 of the Civil Code and the lease’s assignment restrictions.

Forgetting customer deposits and prepaid services

A customer’s advance payment is not merely cash to be transferred. It represents an obligation to deliver goods, perform services, or provide a refund. The contract and liability must be allocated together.

Mixing personal and OPC funds

Commingling weakens the separation between the stockholder and corporation and may expose the owner to personal liability under Section 130 of the Revised Corporation Code.

Closing the sole proprietorship too early

The proprietor may still need the old registration and bank account to complete pending contracts, collect earlier invoices, issue final documents, and settle taxes.

Leaving the sole proprietorship open indefinitely

An inactive but unclosed BIR registration can continue generating filing obligations and penalties.

Practical Transition Timeline

The following are planning estimates rather than statutory deadlines:

Activity	Typical planning period
Contract and asset inventory	3–10 business days
SEC OPC registration	Same day for eligible automated applications; several working days or longer for reviewed applications
Standard customer or supplier consents	1–4 weeks
Landlord, bank, franchise, or regulated-party approval	2–8 weeks or longer
BIR registration of OPC	Several working days, depending on completeness and RDO processing
LGU permit retirement and new application	Several days to several weeks
BIR closure of qualifying micro sole proprietor	Potentially 3 working days after complete submission and settlement
BIR closure involving audit, open cases, or significant liabilities	Several months or longer

The most common bottlenecks are missing contract copies, unresponsive counterparties, unresolved tax returns, landlord requirements, open BIR cases, and inconsistencies among the SEC name, lease, barangay clearance, and LGU application.

Frequently Asked Questions

Do all my contracts automatically continue when I register an OPC?

No. The OPC is a different juridical person. Each contract must be reviewed to determine whether it may be assigned, requires consent, or must be replaced.

Can the OPC simply take over payments under my existing loan?

It may make payments, but that does not necessarily make it the borrower or release you. The bank must approve any substitution or novation.

Am I still personally liable for debts incurred before incorporation?

Generally, yes. Incorporation does not retroactively erase the proprietor’s liabilities. You remain responsible unless the creditor validly releases you or agrees to substitute the OPC.

Does an assumption agreement release the sole proprietor?

Not by itself. An assumption agreement between you and the OPC may allocate responsibility internally, but the creditor ordinarily must consent before you are released.

Can I transfer accounts receivable without customer consent?

Often, yes, unless the contract prohibits assignment or the right is non-transferable. The customer should receive formal notice so payment can be redirected to the OPC.

Can the OPC use the same commercial lease?

Only if the lease permits assignment or the landlord gives the required consent. Article 1649 generally requires the lessor’s consent unless the lease states otherwise.

Should customers sign completely new contracts?

A new contract is often the cleanest solution, particularly for long-term services, regulated arrangements, non-transferable agreements, or contracts containing strict assignment clauses. For simpler contracts, a novation or assignment-and-assumption agreement may be enough.

What happens to personal guarantees after the contract moves to the OPC?

They normally remain effective according to their wording unless the creditor releases, replaces, or cancels them. Incorporating the business does not automatically terminate a personal guarantee.

Can I keep the sole proprietorship open while the OPC starts operating?

Yes, during a documented transition. Keep separate books, invoices, bank accounts, contracts, and tax records, and establish a clear cut-off date for transactions.

Does transferring all assets make the OPC the owner of all contracts?

No. Ownership of assets and contractual status are separate questions. A contract may require consent even if the equipment, inventory, and brand used to perform it have already been transferred.

Key Takeaways

A sole proprietorship does not automatically transform into the same legal person as an OPC.
Existing contracts normally remain with the sole proprietor until properly assigned, novated, replaced, or completed.
Assignment of rights does not automatically transfer obligations.
The proprietor remains liable unless the creditor clearly agrees to release the proprietor.
Leases, bank facilities, franchises, licenses, employment relationships, and personal-service contracts need special handling.
Use a written contract register, a definite cut-off date, and transaction-specific transfer documents.
The OPC needs separate SEC, BIR, employer, and local-government registrations.
Asset transfers may create tax consequences even when the OPC has the same beneficial owner.
The sole proprietorship’s DTI, BIR, and LGU registrations must be formally retired or closed.
Separate personal and corporate funds, assets, records, invoices, and obligations to preserve the OPC’s limited-liability protection.