Income tax-carry forward of Lossess 什么意思

Income tax-carry forward of Lossess 什么意思 carry forward of unused tax losses是什么意思 business tax & income tax的意思 income tax return不是退税的意思么? income tax certificate Pre-tax Income Margin income tax act 什么是income tax credits income 什么意思 decent income 什么意思? Carry Forward net income 和 after-tax operating income完全等同吗?指什么?扣息扣税吗?