BASIC AND DILUTED EARNINGS PER SHARE

PERUSAHAAN PERSEROAN PERSERO PT TELEKOMUNIKASI INDONESIA Tbk AND SUBSIDIARIES NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS AS OF DECEMBER 31, 2012 AND FOR THE YEAR THEN ENDED WITH COMPARATIVE FIGURES AS OF DECEMBER 31, 2011 AND FOR THE YEAR THEN ENDED AND AS OF JANUARY 1, 2011 Figures in tables are presented in billions of Rupiah, unless otherwise stated 81

34. RETIREMENT BENEFITS OBLIGATION continued a. Prepaid pension benefit costs continued

The expected return is determined based on market expectation for returns over the entire life of the obligation by considering the portfolio mix of the plan assets. The actual return on plan assets was Rp2,024 billion and Rp1,851 billion for the years ended December 31, 2012 and 2011, respectively. The Company expects to contribute Rp179 billion to its defined benefit pension plan during 2013. The movements of the prepaid pension benefit costs during the years ended December 31, 2012 and 2011 are as follows: 2012 2011 Prepaid pension benefits costs at beginning of year 990 743 Net periodic pension costs benefits less amounts charged to subsidiaries 133 62 Amounts charged to subsidiaries under contractual agreements 12 2 Employer’s contributions 186 187 Prepaid pension benefits costs at end of year 1,031 990 As of December 31, 2012 and 2011, plan assets mainly consisted of : 2012 2011 Indonesian equity securities 21.82 22.13 Government bonds 37.96 39.67 Corporate bonds 16.91 17.37 Others 23.31 20.83 Total 100.00 100.00 Pension plan assets also include Series B shares issued by the Company with fair value totaling Rp223 billion and Rp234 billion representing 1.23 and 1.41 of total plan assets as of December 31, 2012 and 2011, respectively, and bonds issued by the Company with fair value totaling Rp159 billion and Rp156 billion representing 0.87 and 0.94 of total plan assets as of December 31, 2012 and 2011, respectively. The actuarial valuation for the defined benefit pension plan and the other post-retirement benefits Notes 34b and 34c was performed based on the measurement date as of December 31, 2012 and 2011, with reports dated February 28, 2013 and March 7, 2012, respectively, by PT Towers Watson Purbajaga “TWP”, an independent actuary in association with Towers Watson “TW” formerly Watson Wyatt Worldwide. The principal actuarial assumptions used by the independent actuary as of December 31, 2012 and 2011 are as follows: PERUSAHAAN PERSEROAN PERSERO PT TELEKOMUNIKASI INDONESIA Tbk AND SUBSIDIARIES NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS AS OF DECEMBER 31, 2012 AND FOR THE YEAR THEN ENDED WITH COMPARATIVE FIGURES AS OF DECEMBER 31, 2011 AND FOR THE YEAR THEN ENDED AND AS OF JANUARY 1, 2011 Figures in tables are presented in billions of Rupiah, unless otherwise stated 82

34. RETIREMENT BENEFITS OBLIGATION continued a. Prepaid pension benefit costs continued

2012 2011 Discount rate 6.25 7.25 Expected long-term return on pension plan assets 8.25 9.25 Rate of compensation increases 8 8 The components of net periodic pension costs are as follows: 2012 2011 Service costs 372 307 Interest costs 1,151 1,105 Expected return on pension plan assets 1,517 1,441 Amortization of prior service costs 139 139 Recognized actuarial gain - 170 Net periodic pension costs benefits 145 60 Amount charged to subsidiaries under contractual agreements 12 2 Total net periodic pension cost benefits less amounts charged to subsidiaries Note 27 133 62 Historical information: 2012 2011 2010 2009 2008 Present value of funded defined benefit obligation 19,249 16,188 11,924 10,131 9,100 Fair value of plan assets 18,222 16,597 15,098 12,300 8,713 Deficit surplus in the plan 1,027 409 3,174 2,169 387 Experience adjustments arising on plan liabilities 1 156 314 318 1,308 Experience adjustments arising on plan assets 507 410 1,604 2,028 1,774