Methodology

The calculator estimates a notice start date, notice period end date, last working day, worksheet daily rate, possible payment-in-lieu amounts when a clear payable-day basis is entered, unused annual leave or vacation payout, and total visible calculated components. It also shows assumptions, warnings, not-covered items, next steps, HR checklist, and official source cards.

Singapore counts the written-notice day as day 1 and includes weekends, public holidays, rest days, and non-working days. Other jurisdictions retain their existing selectable start assumption. Months use calendar-month handling.

Singapore monthly-rated employees use the MOM daily gross-rate formula: 12 × monthly gross rate of pay ÷ (52 × average working days per week). Other jurisdictions retain the existing monthly, weekly, or daily worksheet basis. Payment in lieu is scenario-sensitive and is estimated only when the user enters a clear payable notice days basis.

HR may use payroll calendars, statutory average wage rules, awards, enterprise agreements, collective agreements, company policy, contract clauses, deductions, tax, superannuation, CPF, benefits, or updated leave records. That is why every result shows source cards and a compact disclaimer.

Not calculated means the calculator does not have enough information or the component is outside the selected scenario. Needs review means the source or rule is too uncertain for a confident worksheet result. Severance, redundancy, long service payment, unfair dismissal, and similar complex items are not calculated in the MVP.