企業營運績效通常是以會計報表上的數字為參考，例如，資產報酬率(ROA)、每股盈餘(EPS)、股東權益報酬率(ROE)與資本報酬率(ROC)等，但這些數字通常受制於許多會計規範，且忽略股東資金成本，若只觀察這些會計數據可能無法忠實呈現一間公司的實際價值與績效。1995年由紐約Stern Stewart & Co.財務顧問公司所提出一個結合會計及經濟之觀念的財務績效衡量指標，現在已廣被使用作為企業價值的衡量工具。能夠以目前會計報表裡的資訊運用若干公式原理而更能充分的呈現在原始會計報表無法獲取的有用的訊息，而更能夠以投資者的角度觀察企業經營者所制定之決策是否以股東之權益為優先考量。本研究係採個案研究方式，分析經濟附加價值，並應用企業評價中自由現金流量折現法，經由三種假設情況下的情境分析，評估個案公司企業價值；最後透過敏感性分析拆解選取關鍵驅動因子，作為提供個案公司未來營運策略與方針之參考。 / The measurement of the firm’s performance usually rely on a lot of normal accounting statements, for example assets rate of returns (ROA ) , per share surplus (EPS ) , stockholder's equity rate of returns (ROE ) and rate of returns of capital (ROC ) ,etc. Those numbers have to follow the Generally Accepted Accounting Principles（GAAP）and ignore the cost of equity. If only observe those accounting numbers, it is hard to faithfully expressing the real value and performance of an enterprise. The Economics Value Added (EVA) concept was proposed in 1995 by the New York Stern Stewart & Co. financial adviser company. It combination of accounting and economic concepts based on financial performance measures. It can show some primitive useful message that accounting statement can't be obtained abundant at present. This concept has been widely be used as a measure of corporate value tool. Our research, which applies case study method, attempts to analyze the EVA value and determine the value of company S by using the discounted free cash flow model under three hypothetic scenarios. In addition, we conduct sensitivity analysis model to find the key value-driving factor of the company, which will be considered in planning future operating strategy.

興櫃股票是指已經申報上市（櫃）之公開發行公司的普通股股票，一般而言興櫃股票的流動性小、股本小，因此短線投資人多以即將掛牌上櫃的公司為主，至於中長線的投資人則以長期價值的觀點來投資，投入資金後必須等待一段時間，待上市（櫃）後，才能獲取較好的投資報酬率。長期投資須以自有資金投入，進一步瞭解該公司產業狀況及基本面表現後，應用適合未上市公司的評價模式，來做為投資的依據是很重要的。 本研究以興櫃市場中的半導體產業中的廣穎電通股份有限公司作為研究對象，以自由現金流量法為評價模型，並針對未上市公司在參數估計困難的部分作調整，使評價未上市公司時有一套可依循的流程，並加入考量未上市公司股票因流動性不足，所造成之流動性折價，以提升在評價上的合理性及正確性。 實證結果顯示，以2011 年年報來估計相關參數，運用現金流量折現法的每股理論價值為39.24 元。若考量流動性折價，以上市股票市場資料推估所得之流動性折價，廣穎電通之每股理論價值將為39.05 元；以興櫃股票市場資料推估所得之流動性折價，廣穎電通之每股理論價值將為37.93 元。

因應全球化時代之來臨，為提升會計資訊的透明度及跨國間之可比較性，國際財務報導準則(IFRS)已然成為全球資本市場共通的會計語言。我國為提升企業與資本市場國際競爭力及降低企業赴海外籌資成本，將自2013年起分階段直接採用（Adoption）IFRS。 針對無活絡市場公開報價之權益商品公允價值衡量議題，本研究目的擬以投資者的立場，透過IFRS與我國現行財務會計準則間之主要會計原則差異，探討對自由現金流量折現法評價模型及評價步驟之影響，以提供未來投資者於應用自由現金流量折現法進行企業評價時之參考。 本研究顯示在IFRS與我國現行財務會計準則並存適用下，不論於進行同公司跨期間或不同公司同期間之分析比較時，需先辨識重大會計差異所帶來之潛在影響，並掌握因衡量方法的改變、IFRS 1各項豁免選擇、抑或表達上的重分類等，對財務報表資訊內涵所產生之影響，進而衡酌對自由現金流量評價模式的參數設定調整，以及可能改變對未來現金流量金額、時點及不確定性之預期，如此，方能獲致IFRS所帶來之提升財務資訊可比較性及高透明度等效益。 / With economic globalization, International Financial Reporting Standards(IFRS) is becoming the single set of globally accepted accounting principles to increase the transparency and comparative of financial statements. In keeping with international trends and to increase competitiveness, companies as the 1st phase in Taiwan will adopt IFRS in 2013. In this study, from the investor point of view, discussed the major differences between IFRS and ROC GAAP, which impact on the discounted free cash flow model and the evaluation steps. To provide the reference for investors when evaluating the company with the discounted free cash flow model. This study shows that under IFRS and ROC GAAP coexist, it must recognize the potential impact of the significant accounting differences firstly whether in the analysis of the inter-period of the same company or different companies during the same period. Due to control the impact of the information content of financial statements from the change of measurement、how to use exemptions provided by IFRS1 or expression on the re-classification, in consideration of adjusting the parameters of the discounted free cash flow model, and may change the expected amount of future cash flows , point and uncertainties. And then, we will attain the benefit such as enhance comparative and transparency of financial information from adopting IFRS.