What a COR proves and who submits it
A COR is endorsed by the payee’s foreign tax authority to certify residence in its jurisdiction for DTA relief or exemption. The payer submits a copy when applying a lower or reduced treaty rate. It should be sent promptly after filing or receipt from the non-resident.
The two submission deadlines
For a current-year claim the FAQ gives 31 March of the following year; for preceding-year claims it gives three months from WHT submission. Missing the deadline can trigger a demand for additional withholding tax and late-payment penalties. COR is needed for each year in which treaty relief is claimed.
Access, record window and appearance
Authorised company staff, authorised tax-agent staff and sole proprietors with NRIC/FIN may access View S45 COR Status. It shows the last 250 records, only for filings from 1 October 2009. Status appears three days after e-filing or ODE submission; absent an existing payee/year COR, Pending appears.
COR versus Form IR586
COR is foreign-authority residence certification, while IR586 is completed by an eligible non-resident professional resident in a treaty jurisdiction claiming exemption for personal services in Singapore. Payers keep IR586 rather than submitting it unless requested. The COR-status service does not track IR586 or the tax-treaty calculator.
Copy, original and retention: a source inconsistency
Answers 4 and 7 say a COR copy is submitted and the original only if requested, with records kept five years. Answer 11 separately calls for an original yearly where treaty relief is claimed yearly. These instructions differ within the PDF. The article preserves that difference rather than inventing a single original-document rule; confirm the current IRAS requirement for the actual claim.
Submission and extension routes in this PDF
Although the FAQ says there is no direct e-Service for submission, it describes scanning a COR PDF of no more than 3 MB and using the IRAS Forms > Other Taxes & Services > S45 Withholding Tax Forms > Submit COR route. It likewise describes a form route to request up to two months’ extension, while saying no direct extension e-Service exists. These are the interface routes stated in this document, not proof that today’s menus are identical.
Five filing statuses
Pending means IRAS has not received the COR. COR Received confirms receipt. Under Review means officers are reviewing and updating the document. Not Required means submission is unnecessary. Disallowed means treaty relief or exemption was rejected for failure to submit COR. Receipt and review therefore should not be confused with approval of relief.
Duplicate non-resident records
Small differences in a name, such as punctuation, can produce separate non-resident records. Use the official name in the WHT filing rather than an abbreviation or trading name. The four-page PDF supplies no publication date in its extracted text; its legacy examples and routes are identified explicitly here.
Official source
This article independently explains the substantive contents of the official PDF, including the relevant conditions, procedures and annexes. The linked document remains the authoritative source for its original wording, and later changes should be checked separately.
Read the official PDF ↗