婚前购买的房产，婚后加名或更名要缴税吗？

Core Viewpoint - The article discusses the documentation requirements for companies to enjoy the tax deduction policy for R&D expenses, emphasizing the importance of retaining specific materials to substantiate claims [12][19]. Group 1: Basic Documentation Requirements - Companies must retain two core types of documents to prove the nature of R&D projects: project plans for self-initiated, commissioned, or collaborative research and the resolution documents from the company's authorized departments regarding project initiation [12]. - For R&D activities, documentation related to personnel and assets is crucial, including the composition of specialized R&D teams and lists of personnel involved in R&D activities [13]. Group 2: Documentation for Centralized R&D Projects - Companies engaged in centralized R&D projects need to keep records such as the R&D expense settlement table, detailed expense allocation tables, and actual profit-sharing ratios [15]. Group 3: Auxiliary Accounting Records - Companies should maintain auxiliary accounts for R&D expenses along with summary tables to ensure proper tracking and reporting of R&D expenditures [17]. Group 4: Additional Documentation for Commissioned R&D - When companies commission R&D (including overseas), they must retain additional documents such as registered contracts for domestic commissions and payment vouchers for overseas commissions, along with progress reports on the projects [21]. Group 5: Retention Period and Legal Responsibility - Companies are required to keep the documentation for a minimum of 10 years from the end of the corporate income tax settlement period in which the tax benefits were claimed, and they bear legal responsibility for the authenticity and legality of the retained documents [22].