Penalty calculator
Assumptions & calculation trace
- Uplift rate: 60%
- GIC estimate rate: 10% (illustrative)
- Notional interest uses simple daily interest: annualRate ÷ 365 × daysLate
- Deductibility labels are product guidance only; confirm with a registered tax agent.
Notional interest$49.32
shortfall × (annualRate ÷ 365) × daysLate
SGC Core$10,049.32
shortfall + notionalInterest
Admin uplift$6,029.59
SGC Core × 0.60
GIC estimate$1,004.93
SGC Core × 0.10
Total non-deductible$7,034.52
adminUplift + gicEstimate
Total exposure$17,083.84
SGC Core + non-deductible total
SGC Core (deductible)$10,049.32
Notional interest$49.32
Admin uplift (non-deductible)$6,029.59
GIC estimate (non-deductible)$1,004.93
Total non-deductible penalties$7,034.52
Total exposure$17,083.84
Warning: uplift and GIC are shown as non-deductible costs and can materially increase your true cash impact.