Facing a Drug Charge? Get Specialist Legal Advice Fast.

Possession is holding or having control of a prohibited drug for personal use and carries relatively lower penalties. Supply charges arise when the prosecution alleges you were distributing, selling, or offering drugs to others — and also applies if you are found with a quantity above the trafficable threshold set in your state's legislation, which creates a legal presumption of supply. Supply and trafficking offences carry significantly higher maximum penalties, including lengthy imprisonment, compared to simple possession. The specific quantities that trigger different charge levels vary by state, by drug type, and by whether the charge is under Commonwealth or state law.

Australian drug legislation sets graduated quantity thresholds. A trafficable quantity is the point at which the law presumes the drug was not for personal use alone. A commercial quantity is a higher threshold that triggers more serious charges and mandatory minimum sentencing in some states. Large commercial quantities attract the most severe penalties, including very long terms of imprisonment and in federal matters, possible life imprisonment. A lawyer can identify which threshold applies to your specific charge and what that means for your sentencing exposure.

Drug diversion programs allow eligible individuals charged with minor drug offences — typically personal use possession — to participate in assessment, treatment, or education rather than face a criminal conviction. Programs vary by state: examples include the Police Diversion Program in Victoria, the Cannabis Cautioning Scheme in NSW, and the Drug Diversion Initiative in Queensland. Eligibility generally requires no prior drug convictions, a willingness to participate, and a small quantity consistent with personal use. A lawyer can advise whether you qualify and assist in accessing the program.

A drug conviction can affect employment prospects, licensing requirements (including Working With Children Checks, security licences, and professional registrations), international travel (particularly to the USA, Canada, and Japan), and future interactions with the criminal justice system. Even a spent conviction may still be disclosed in certain contexts. Avoiding a conviction — through diversion, a not guilty finding, or a Section 10 or equivalent order — is often a key goal for clients, and a lawyer can advise on the realistic prospects of each outcome in your case.

Defences to drug supply charges include challenging the search that produced the evidence (if police lacked lawful authority to search), arguing the drugs were for personal use only (rebutting the trafficable quantity presumption), challenging the identity of the substance, or arguing honest and reasonable mistake of fact. In some cases, a person may have had drugs in their possession without knowing — for example, if the drugs were placed in their bag or vehicle by another person. The strength of available defences depends heavily on the facts and the quality of the prosecution brief, which a lawyer can review.

In Australia, older drug convictions may become "spent" under state or territory spent conviction schemes, which means they are no longer required to be disclosed in most circumstances after a set period — typically 10 years for adult convictions. However, spent convictions are not erased and can still be disclosed for certain roles (such as working with children or in law enforcement). Some jurisdictions also allow applications for formal spent conviction orders. A lawyer can advise whether your specific conviction may already be spent or whether an application is available.