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This guide explains common reasons your RSU vest can have withholding and you can still owe more later. It is designed for planning and reconciliation, and your final position depends on your full income profile.
Payroll is an estimate: withholding can be correct for that period while still differing from the full-year position.
Credits and cut-off points: changes during the year can shift PAYE outcomes.
Other income: additional non-PAYE income can change your year-end position and filing requirements.
Benefits-in-kind: BIK can change the payroll base and can interact with credits.
Post-vesting sale gains: selling later can create a separate gain/loss layer relevant for CGT depending on your overall gains.
| Vesting statement | Confirms shares, vest date, vest price |
| Vest-month payslip | Confirms PAYE/USC/PRSI withholding |
| Sales confirmations (if any) | Confirms post-vesting gain/loss layer |
Withholding is often a payroll estimate at the time of vesting. Your final position can change based on full-year income, credits, benefits, other income, and any gains after vesting when shares are sold.
Not necessarily. It can be correct for the payroll period while still differing from the final year position. The goal is to reconcile the story using payslips, vest statements, and your wider income profile.
Yes. A later share sale can create a gain above the vesting value (cost basis), which may be relevant for CGT depending on your year-wide gains position.