A foreign-invested company lives with two address-bearing papers issued by two different authority systems: the Investment Registration Certificate (IRC) from the investment registration authority, and the Enterprise Registration Certificate (ERC) from the business registration authority. One office move whose file amends only one side immediately splits the two addresses — and that split silently jams banking, invoices and bidding until discovered at the most inconvenient moment.
Why they split: two registration systems, no automatic sync
The IRC records the head-office address of the project-implementing economic organisation and the project implementation location; the ERC records the company head office address. The two data points are related but sit in two independent files: a business-registration change does not automatically amend the investment document, and vice versa. Classic split scenarios include: the company moves and files only the ERC change; the project adjusts its implementation location while the enterprise side is forgotten where head office and project site coincide; an industrial-park developer renumbers lots or restyles addresses so old documents diverge; and typos across certificates issued years apart.
Distinguish two look-alike states of different natures: a true mismatch (one same location recorded differently in the two documents, or one document bearing an abandoned address) — a fault to fix; and a lawful difference (head office in one place, project location in another, each document correctly recording its own side) — not a fault at all, provided internal files and document presentation explain the two-location structure. Blindly “aligning” a lawful difference is how new errors are manufactured.
Risks of transacting with mismatched addresses
Banks are where the split erupts first: customer verification cross-checks the IRC and ERC, and a mismatched address is a common reason account opening, account-information changes or disbursement files are suspended pending explanation and amended documents. On the transaction side, large partners and investors run legal due diligence before contracting — a split address reads as weak file governance and may have to be cured before signing. On documents, e-invoices take the seller address from the enterprise registration, while project files, investment reports and sub-licences cite the IRC address — the inconsistency complicates tax finalisation, refunds and authority cross-checks between investment and enterprise files.
A rarer but heavier risk is disputes over the place of legal notice. Where two papers bear two addresses, an authority or partner document sent to the old address on one of them may count as validly served while the company never actually receives it — complaint windows, response deadlines and obligations then run against the company. Keeping addresses consistent is therefore legal-risk management, not mere administration.
The adjustment sequence to align both sides
Step one is audit and truth-finding: where is the real head office today, where is the real project location, and which document records wrongly or stale. Step two fixes the enterprise side: register the head-office address change on the ERC under the business-registration change procedure if the ERC is the wrong side. Step three fixes the investment side: file an IRC adjustment on the organisation head-office address or project location information with the investment registration authority that issued the IRC (the provincial investment registration authority, or the management board of the industrial park, export processing zone or economic zone for in-zone projects), under the project-adjustment procedures of Investment Law 143/2025/QH15. The two steps order may flex, but “aligned” must not be declared after amending only one side.
Once both documents align, close the loop with satellite updates: send copies of the adjusted IRC and ERC to the bank for the customer file; reconcile addresses on the e-invoice system, tax filing account and social insurance; review sub-licences and running contracts still citing the old address and issue addenda or information-change notices. And to prevent recurrence: make “simultaneous adjustment of both registration systems” a mandatory line in the checklist of every future company address or location change.
An IRC–ERC address split is a synchronisation fault, and the only cure is amending both sides with the authority that issued each. An FDI company should reconcile these two papers at least once a year — finding a split in a review session is cheaper than finding it in a suspended disbursement session. This draft is pending review by the QA Council.
Frequently asked questions
Do different addresses on IRC and ERC matter?
They matter if it is a true mismatch: the same location recorded differently in the two documents, or one document bearing an abandoned address — the company faces bank explanation demands at customer verification, weak-file readings by partners in due diligence, and friction when authorities cross-check investment and enterprise files at inspection or finalisation. By contrast, a head office in one place and a project location in another, each document correctly recording its side, is a lawful structure needing no “alignment”.
Where is the alignment adjustment made?
At both issuing authorities: the enterprise side — register the head-office address change with the provincial business registration authority for a reissued ERC; the investment side — file an IRC adjustment with the investment registration authority that issued the IRC (the provincial investment registration authority, or the industrial park, export processing zone or economic zone management board for in-zone projects) to adjust head-office address and project location information under Investment Law 143/2025/QH15. Amending one side is not alignment.
What risks arise when transacting with mismatched addresses?
Three main risks: inconsistent documents (invoices following the ERC address, project files and licences following the IRC address) causing trouble at tax finalisation, refunds and cross-check inspections; partners in legal due diligence postponing contract signing until the file is cured; and the notice risk — legal documents sent to the old address on one of the two papers may count as validly served though never received, so deadlines run against the company.
Will a bank refuse because of the address split?
Banks usually do not refuse outright but suspend the file: in FDI customer verification the bank cross-checks IRC and ERC simultaneously, and a split address grounds a demand for written explanation, presentation of adjusted documents, or an adjustment commitment within a deadline. The practical consequence is slower account opening, transaction-representative changes or disbursement — so cure the split before starting important banking procedures.
How is a future address split prevented?
Four habits: first, every address or location change runs a two-system checklist (ERC and IRC) in the same round; second, keep a single company address reconciliation table covering head office, project location, branches and business locations with their corresponding documents; third, reconcile IRC against ERC annually within the compliance review; fourth, when an infrastructure developer restyles addresses or renumbers lots, proactively obtain its confirmation letter as the basis for adjusting both sides at once.
This article has been quality-reviewed by the FLAW AI Legal Council