A fixed-term rental agreement sets an end date. Leaving before that date without a legal ground or an agreed early end can be a lease break.
You may have to pay compensation, but that does not always mean paying every week remaining on the lease. The rules may set a break fee or cap, or allow claims for particular costs. The agreement date and state or territory matter.
Tell the owner or agent in writing as soon as you can and ask for an itemised estimate under the rules that apply.
There is no single national list of situations that end a tenancy immediately. Some laws allow early termination for specific reasons, such as family violence, an unsafe property, a serious breach or hardship. A notice, evidence or tribunal order may be required, and compensation can still be possible. A landlord’s breach, a tenant’s breach, a mortgagee notice or a tenant’s death does not automatically end every agreement without cost.
Before moving out, check the current rules for your state or territory and follow the required notice process. If you and the owner agree to an earlier end, record the date and any payment or bond arrangements in writing.
Buying a home does not remove the cost by itself. Your options are to negotiate an early end, use a legal ground that applies to your situation, or follow the ordinary break-lease rules for your agreement.