"Japan has a progressive taxation system so the higher a persons annual income, the more tax they pay."
- "Japan has a progressive taxation system so the higher a persons annual income, the more income tax they pay."
"progressive taxation system" 「累進課税制度」
"Japan has a progressive taxation system so ~" 「日本は累進課税制度だから、〜」
"so" 「から」
"annual income" 「年収」
"the higher a persons annual income the more tax they pay" 「年収が高い人ほど税金を取られる」
"tax they pay" 「税金を払う」・「税金を取られる」
オーストラリア 
