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Court of Criminal Appeal 6 March 2026

Duncan v R

[2026] NSWCCA 19

DrugsFirearms & weapons
CRIMINAL LAW SENTENCE APPEAL TOTALITY PRINCIPLE ACCUMULATION OF SENTENCES SPECIAL CIRCUMSTANCES OVERVIEW OF PRINCIPLES

Citation: Duncan v R [2026] NSWCCA 19
Court: Court of Criminal Appeal (NSW)
Date: 6 March 2026
Judge(s): Stern JA at [1], Hamill J at [2], Huggett J at [38]

Background

The applicant, Mr Duncan, sought leave to appeal against an aggregate sentence of 4 years' imprisonment (with a non-parole period of 2 years and 4 months) imposed in the District Court on 6 February 2025. He had pleaded guilty in the Local Court to four offences: two counts of possessing a prohibited weapon (a taser and a set of knuckledusters) and two counts of supplying a prohibited drug (methylamphetamine). He received a 25% sentencing discount for his early guilty pleas.

The offending occurred across January and March 2022. The weapons were found during a traffic stop on 25 January 2022. Between 12 and 15 March 2022, police monitored the applicant's telephone communications and observed him supplying discrete quantities of methylamphetamine totalling 10.5 grams to a buyer. A subsequent search warrant yielded a further 18.67 grams of the drug at a hotel room where the applicant was staying. He was not charged with the drug offences until December 2022, and there were further delays caused by the prosecutor's tardiness in electing to have the matters dealt with on indictment in the District Court.

Critically, at the time of sentencing for these offences, the applicant was already in custody serving a sentence imposed on 9 May 2023 for an armed robbery committed on 6 March 2022 — temporally situated between the weapons offences and the drug supply offences. The sentencing judge recognised the totality issues that arose and ordered the new sentence to be served mostly concurrently with the armed robbery sentence. However, the partial accumulation had the effect of increasing the total effective sentence by 2 months and extending the non-parole period by 6 months. This meant the applicant's period on parole was actually reduced by 4 months, notwithstanding a finding of "special circumstances" under s 44(2B) of the Crimes (Sentencing Procedure) Act 1999 (NSW), which was based on the applicant's need for extended community supervision to address drug issues and mental health conditions.

  • Whether the sentencing judge failed to give effect to her finding of special circumstances by not adequately adverting to the impact of the partially accumulated sentence on the ratio between the applicant's effective overall non-parole period and total sentence.
  • What obligation rests on a sentencing judge to consider and communicate their awareness of how a partially accumulated sentence affects the proportion between the non-parole period and total sentence, particularly where special circumstances have been found.
  • Whether there is any difference in principle between the application of the totality principle to sentences imposed in a single sitting and sentences accumulated upon a pre-existing sentence imposed on a different occasion.

Decision

Hamill J (with whom Stern JA and Huggett J agreed) granted leave to appeal but ultimately dismissed the appeal. His Honour provided a detailed overview of the principles governing accumulation, totality, and the interaction with findings of special circumstances.

The Court affirmed that there is no difference in principle between the application of the totality principle to multiple sentences imposed at one time and a sentence accumulated on an existing sentence. In either scenario, the sentencing judge must consider the overall effect on the offender and ensure the aggregate result is just and appropriate. The Court drew on Mill v The Queen, Pearce v The Queen, R v Close, Sabongi v R, and Lonsdale v R in articulating this framework.

On the central question — whether the sentencing judge had adequately adverted to the impact of accumulation — Hamill J held that the answer will always depend on the facts of the case and the inferences that can be drawn from what the sentencing judge communicates, whether in their formal remarks on sentence or in explanations given to the offender. Where accumulation reduces the proportion of time to be spent on parole, the critical question on appeal is whether this was the product of inadvertence or miscalculation, or whether the sentencing judge was conscious of the effect and exercised a deliberate discretionary judgment.

Having examined the District Court record closely, including the sentencing remarks and the explanation given to the applicant, the Court was satisfied that the sentencing judge was conscious of, and adverted to, the impact of accumulation on the total effective sentence, the non-parole period, and the balance of term. Hamill J acknowledged it may have been "preferable" for the sentencing judge to have explicitly stated the new percentage proportion and the numerical reduction in the parole period, but held it was not imperative for her to do so. Because the sentencing judge had explained the practical impact of the sentence to the applicant and demonstrated awareness of the totality considerations, there was no error.

Orders Made

  • Leave to appeal was granted.
  • The appeal against sentence was dismissed.

Key Takeaways

  • No distinction exists between simultaneous and sequential accumulation for totality purposes: The Court of Criminal Appeal confirmed that the totality principle must be applied with equal rigour whether multiple sentences are imposed at one time or a new sentence is accumulated upon a pre-existing sentence imposed on a different occasion. The overall effective sentence must be just and proportionate in either scenario.

  • Where accumulation alters the non-parole period ratio, the sentencing judge must demonstrably advert to that impact: The Court held that where accumulation on a pre-existing sentence changes the proportion between the non-parole period and the total sentence (particularly where special circumstances have been found), the sentencing judge must show on the record that they were aware of and considered that impact. Failure to do so risks a finding of error by inadvertence.

  • Explicit numerical identification of the new ratio is preferable but not mandatory: While it is better practice for a sentencing judge to state the revised percentage proportion and the specific change in parole period resulting from accumulation, the absence of such express articulation does not necessarily constitute error if the judge's awareness can be inferred from the record as a whole, including explanations given to the offender.

  • Prosecutorial delay can significantly affect totality considerations: The Court recognised that the delay in charging and electing jurisdiction meant that offences temporally proximate to the armed robbery could not be dealt with together, creating totality complications and underscoring the importance of the sentencing court being furnished with adequate information about existing sentences.

  • On appeal, the critical question is whether the result was inadvertent or deliberate: In dismissing the appeal, the Court clarified that the appellate inquiry in cases of this kind is not whether the Court of Criminal Appeal would have structured the sentence differently, but whether the sentencing judge's treatment of the accumulation and its impact on the non-parole period ratio was the product of considered judgment rather than oversight or miscalculation.

Legislation and Cases Referenced

Legislation:
- Crimes (Sentencing Procedure) Act 1999 (NSW), ss 44, 44(2), 44(2B), 53A, 53A(2)(b)
- Sentencing Act 1989 (NSW), s 5(2)

Cases:
- Al Shamari v R [2025] NSWCCA 236
- GP v Regina [2017] NSWCCA 200
- Harris v R [2023] NSWCCA 44
- Islam v R [2020] NSWCCA 236
- Lonsdale v R [2020] NSWCCA 267
- Matthews v R [2014] NSWCCA 185
- McKittrick v R [2014] NSWCCA 128; (2014) 243 A Crim R 155
- MD v R [2015] NSWCCA 37
- Mill v The Queen (1988) 166 CLR 59; [1988] HCA 70
- Pearce v The Queen (1998) 194 CLR 610; [1998] HCA 57
- R v Close (1992) 31 NSWLR 743
- R v Danishyar [2025] NSWCCA 46
- R v GDR (1994) 35 NSWLR 376
- R v LWP [2003] NSWCCA 215
- R v Simpson (1992) 61 A Crim R 58
- R v Simpson (2001) 53 NSWLR 704; [2001]