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What is the Difference Between Murder and Manslaughter?

Andrew Byrnes Law Group • Apr 20, 2022

In the modern criminal justice system, there are two types of homicide: murder and manslaughter. Manslaughter and murder are two grave crimes that can carry harsh penalties. However, there is a big difference between the two.


This blog post will discuss the key differences between murder and manslaughter. We will also provide the penalties per state and some examples of each crime to help you understand them better.


Keep reading to learn more!

What is the Definition of Murder and Manslaughter?

Murder is defined as the unlawful, intentional killing of one human being by another. It is an act that is considered to be very serious, and in some countries, it is considered to be the most severe crime that one can commit. The person who commits murder will be charged with felony murder and will face a long term of life imprisonment or possibly capital punishment if found guilty.


On the other hand, manslaughter is defined as the unlawful unintentional killing of another human life. Voluntary manslaughter occurs when a person kills with intent but without premeditation. Involuntary manslaughter, on the other hand, is when it is accidental death that occurs unintentionally as the result of recklessness or criminal negligence. A person who commits manslaughter unintentionally will not be charged with felony murder as he would have been having committed murder but instead will be charged with a misdemeanour.


If you have been charged with either crime, the best way to increase your chances of securing a favourable outcome for your case is by reaching out to a criminal lawyer you can trust.

The Difference Between Murder and Manslaughter

Now that we have looked at the definitions of murder and manslaughter, let us look at some key differences.


The first difference is in the intention of the person committing the crime. In cases of murder, the person kills another human being. They may have planned it or done it on a whim, but they intended to kill someone. On the other hand, in cases of involuntary manslaughter, there is no intention to kill anyone. The person's death has occurred by accident or as a result of recklessness.


The second difference is in how these crimes are punished. Murder is considered a grave crime and can carry capital punishment in some countries. Manslaughter, on the other hand, is not considered to be as severe and is usually punished with a shorter prison sentence.



Voluntary manslaughter can be committed in the heat of the moment, such as during a fight. While involuntary manslaughter, for example, is if someone drives drunk and kills someone, they can be charged with vehicular manslaughter.

The Penalties for Each Crime in the Different States in Australia

The penalties for each of these crimes differ as well. Murder, being the more serious crime, usually has a harsher punishment. The person convicted of murder can face a life sentence or even capital punishment in some countries.



There are two kinds of murder in many jurisdictions like in the USA: first-degree murder and second-degree murder. First-degree murder refers to a deliberate or premeditated murder, while second-degree murder refers to a random or spontaneous killing of human life committed with malice aforethought but without deliberation.

a person holding prison bars with both hands

In Australia, they have different laws per state. The penalties for each of these crimes differ as well. Murder, being the more serious crime, usually has a harsher punishment. Below are the penalties for each state in Australia:

  • New South Wales (NSW)

    Under Crimes Act 1900 Section 19A, in New South Wales, life imprisonment is the maximum penalty for murder.


    While the Crimes Act 1900 Section 24 states that the maximum penalty a person can receive for manslaughter is 25 years of imprisonment. If the death was caused by an accidental killing or anything that was not malicious, the person will usually only be charged with negligent homicide.

  • Queensland (QLD)

    The penalties for murder in Queensland are firm. Criminal Act 1899 Section 305 states the following penalties for murder:

    • Any person who is found guilty of murder can face life imprisonment.
    • If someone who has already been convicted of murder is found guilty of another murder, they must serve at least 30 years in prison. If they are released early under unusual circumstances that fall under the Corrective Services Act 2006
    • Through their actions or omissions, it could be that someone kills a police officer, even if it's in retaliation or while they're on duty. They could get 25 years in prison. Whether or not the offender says they didn't know the victim was an officer doesn't matter in this case.

    The penalty for manslaughter is life imprisonment under the Criminal Code Act of 1899, Section 310. In contrast to murder, the law does not state any ground for mitigation. This means that, depending on the facts of the case, the court may opt to impose a less harsh punishment. The law also didn't specify a minimum penalty.

  • South Australia (SA)

    Murder is an indictable offence in South Australia that carries a mandatory life sentence according to Crime Law Consolidation Act 1935 Section 11.


    You may be convicted of manslaughter in South Australia (SA) if you kill another person but:

    • You did not intend to do so, or; 
    •  You had no intention of inflicting significant bodily injury on them.

    And according to Crime Law Consolidation Act 1935 Section 13, a person convicted of voluntary or involuntary manslaughter faces life imprisonment or a fine imposed by the court, or both.

  • Tasmania (TAS)

    Murder is one of the most serious crimes in Australia, and not only in Tasmania. Murder is defined under Tasmanian law as the intentional taking of another person's life, and it carries a maximum sentence of life imprisonment, along with treason.


    In Tasmania, an indictable offence entitles the offender to a jury trial. The offence is classified as a major indictable offence and a minor indictable offence. Murder and making a threat to murder are both felonies for which an offender may be held without a warrant.


    Any person who commits murder is guilty of a crime and is liable to imprisonment for the term of the person's natural life or for such other term as the Court determines this is according to Criminal Code Act 1924 Section 158.


    In Tasmania, a deadly attack that does not result in a murder charge or any other circumstances constitutes manslaughter under Crime Code Act 1924 Section 159. However, any opposing offence or legal justification may not result in a manslaughter prosecution.


    To be found guilty of manslaughter under Tasmanian law, an individual must be grossly negligent. If convicted of manslaughter, the perpetrator faces a maximum sentence of 25 years in jail. As with murder charges, the criminal may be arrested without a warrant.

  • Victoria (VIC)

    Each murder case is unique in its facts and circumstances. As a result, the punishments for each are not identical. However, Crimes Act 1958 Section 3 establishes a uniform penalty for murder. It states as follows:

    • Anyone convicted of murder faces a mandatory minimum sentence of level 1 imprisonment. This entails life imprisonment or incarceration for any number of years determined by the judge.
    • Anyone convicted of murder gets a mandatory minimum sentence of 25 years in jail. If the victim is a custodial officer or a duty emergency worker, the accused faces a minimum of 30 years in jail.

    In the Crimes Act 1958 Section 5, the crime of manslaughter is punishable by a level 2 sentence, which can be up to 25 years in prison.

  • Western Australia (WA)

    If an adult is found guilty of murder, they must spend the rest of their life in prison unless:

    • There is no way that a life sentence would be fair in these circumstances.
    • If the criminal is released, they aren't likely to be a threat to the community's safety (in which case the accused must be sentenced to imprisonment for 20 years).
    • A child (juvenile) who is found guilty of murder could be sentenced to life in prison or detention until the governor allows them to be released.

    Manslaughter is when someone kills another person in a way that doesn't meet the strict definition of murder, but it still counts as murder.


    There are many different ways that provocation can lead to manslaughter, like when a person is unable to control their actions and kills another person unlawfully. It can happen when people are abused or when they defend themselves. It's common for people to fight with weapons in this kind of situation.


    There are a lot of different punishments according to Criminal Code Act 1913 Chapter XIX Section 167 manslaughter because it can happen in a lot of different ways. All cases of manslaughter must be looked at on their own merits.

Cases Where Murder and Manslaughter have been Charged

There have been many cases where people have been charged with either first-degree murder or voluntary manslaughter. Some of these cases have made headlines, while others have flown under the radar.


In Australia, there was a case in 2016 where a man was charged with murder after shooting his wife in the head. The man had been arguing with his wife and had shot her during the argument. He was sentenced to life imprisonment with a non-parole period of 20 years.


Another case in Australia of voluntary manslaughter was former AFL player Bachar Houli. He was charged with manslaughter after he punched an opponent during a match and the man subsequently died from his injuries. Houli was sentenced to ten months in jail but was released on a good behaviour bond after two months.



These are just two examples of cases where people have been charged with either voluntary manslaughter or involuntary manslaughter. As we can see, the penalties for each crime differ depending on the severity of the crime and the jurisdiction in which it was committed.

How to Get Legal Help if You Are Accused of either Crime

If you have been accused of either murder or involuntary manslaughter, it is important to get legal help as soon as possible. These are severe charges, and you will need an experienced criminal defense attorney to help you through the process.



At Andrew Byrnes Law Group, we have a team of experienced criminal defence lawyers who can assist you if you have been charged with either of these crimes. We will guide you through every step of the process and ensure that you receive the best possible outcome. Contact us today for a free consultation.

Summing Up

In summary, murder is more severe than manslaughter, and the penalties reflect this. If you have been charged with either of these crimes, it is important to get legal help as soon as possible. At Andrew Byrnes Law Group, we can assist you with your case. Contact us today for a free consultation.


Hopefully, this blog post has helped clear up any confusion about the difference between murder and manslaughter.

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