[摘　要]　对项目投资财务内部收益率税前、税后指标的研究结果表明，二者之间近似呈线性关系。通过分步回归分析的方法得出了税前税后指标线性模型，并采用模拟法进行了误差分析，按回归模型计算结果相对理论公式计算误差较小，可以在工程实际中应用。

[关键词]　建设项目,内部收益率,所得税,分步回归,线性模型

Abstract: Study on project financial internal rate of return（FIRR） shows that the relation between project investment FIRR before income tax and after income tax is approximately linear. Through the method of regression analysis by step, the linear model of FIRR before income tax and after income tax is proposed. By error analyzing with Monte Carlo simulating, there is little difference between the results from regression models and results from theoretical formulas, and the regression models can be used in engineering practice.

Key words: construction project; FIRR; income tax; regression analysis by step; linear model

[参考文献]

[1]国家发展改革委员会，建设部.建设项目经济评价方法与参数（第三版）[M].北京：中国计划出版社，2006.

[2]Hawawini.G.，Viallet.C.高级经理财务管理:创造价值的过程[M].北京：机械工业出版社，2003.

[3]陶树人.技术经济学[M].北京：经济管理出版社，1999.

建筑经济，2010（3）：88-91