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IR21 final pay and RSU withholding when leaving
Leaving companion — why HR freezes final salary under Form IR21, one-month notice, garden-leave clocks, unvested RSU / option deemed-exercise risk, and how to budget runway before your last day.
r/askSingapore’s “HR froze my last three months of pay” threads are usually IR21 tax clearance, not a personal grudge. The base rail (who needs clearance, one-month notice, exceptions) lives on IRAS tax clearance when leaving. This companion is the final-pay freeze + share-plan layer.
What gets withheld
| Item | Typical IR21 posture (verify live) |
|---|---|
| Final salary / unused leave pay | Withheld from the date HR knows you are leaving until IRAS directs release |
| Bonuses / commissions still due | Often swept into the same withholding pot |
| Unvested RSUs / unexercised options | May trigger deemed exercise income at clearance unless an approved tracking arrangement applies |
| Direction to release | After IRAS processes IR21 — not on your preferred flight date |
Give HR written leave dates early. Withholding often starts at resignation notice, not only in the final payroll cycle.
Clocks peers underestimate
| Clock | Orientation |
|---|---|
| Employer IR21 filing | Generally ≥ 1 month before cessation / qualifying departure (>3 months overseas) |
| Garden leave | Clearance often expected at the start of garden leave when applicable |
| Short notice resignations | Still require IR21 — thin runway is your problem, not IRAS’s |
| Pass cancel vs tax | MOM/ICA stay windows after pass cancel are a separate calendar — coordinate both |
Do not book non-changeable flights that assume same-week clearance.
RSU / option questions for HR (in writing)
- Will you file IR21 for my cessation date, and which pay components will be withheld?
- Do we have an IRAS-approved tracking arrangement for unvested awards?
- What deemed-exercise income will you report if tracking does not apply?
- When do you expect IRAS direction to release withheld monies?
- Will I keep Singpass / myTaxPortal access after the pass cancels?
Share-plan tax mechanics beyond clearance sit on RSU / ESOP tax.
Decision rule
Treat IR21 as a cashflow event: early written notice → ask about share-plan tracking → budget leaving costs while pay is frozen → confirm release after IRAS direction. Parent clearance map stays on tax clearance when leaving; ops checklist on leaving playbook.
Sources & citations
Admin and policy details change. Prefer the official page when making decisions; we cite primary sources for Singapore government and statutory guidance.
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