The Treasury Laws Amendment (Accelerated Depreciation For Small Business Entities) Act 2017 is a Commonwealth amendment Act dealing with taxation. It received Royal Assent on 22 June 2017 and amended existing tax legislation connected with accelerated depreciation for small business entities.
The practical change was targeted. The Act changed references to 30 June 2017 so that the relevant end date became 30 June 2018. In plain terms, it extended the period during which eligible small business entities could continue to access the increased accelerated depreciation settings already operating under the tax law.
That is the most important way to read this legislation. It is an extension measure, not a complete rewrite of the depreciation regime. If you are reviewing an old asset purchase, the Act matters because it pushed the end date out by one year. But the broader eligibility rules still had to be found in the underlying tax legislation.