Singapore sets December withholding-tax cut-offs and corporate-objection relief

Bring forward withholding workflows

Section 45 services close from 02:00 on 16 December until 08:00 on 29 December. The bulk-filing application is decommissioned on 12 December: submit bulk records by 11 December, then file individually from 12–15 December. IRAS instructs payers to file by 15 December. December GIRO deductions move from 28 to 18 December; non-GIRO December payments should be made by 15 December. This is not a withholding-tax extension.^[2]

Check objection dates separately

IRAS’s corporate-tax objection guide explains that section 76(3) of the Income Tax Act 1947 ordinarily requires a written objection within two months after service of the assessment. Precise grounds are required.^[3]

The transition notice automatically extends corporate-tax objections due from 22–28 December to 7 January 2027. It does not provide a general corporate-return or withholding-tax extension.^[2]

Preserve drafts and approvals

All portal services are unavailable from 00:00 on 22 December until 08:00 on 29 December. Unsubmitted drafts, including those pending approval, will not transfer. Groups should save offline copies and complete their payment and approval workflows before the relevant cut-offs.^[2]