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Taxes · IRAS

Common IR21 Errors: Calendar Years, Withholding and Corrections

Incomplete or incorrectly classified information can delay tax clearance or produce duplicate assessments.

Source checked · 11 October 2026

Income and withholding checks

Split income between the cessation calendar year and the preceding year. Begin withholding when notified of the impending cessation. Paying tax from withheld salary is different from the employer bearing the employee’s tax, which itself creates a taxable benefit. Review unexercised share options and unvested awards under the deemed-exercise rule.

Use the correct correction route

An amended IR21 replaces earlier original or amended income details with the full corrected set. Additional post-cessation benefits taxable after the cessation year follow the additional filing route, with their payment withheld while processed. Non-resident public entertainers instead follow the specified withholding-tax process; do not automatically place their income in IR21.

Official source

A concise, independent Apex Gateway guide based on the official English source, not a reproduction of the complete document. Consult the original for full conditions, exceptions and subsequent updates.

Read the official source ↗
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