Bond Index Remark : 1. Government Bond Indices are calculated from government Loan Bond (LB) only. 2. The base date of sub group 4 's index is 12 March 1999. The base date of other indices is 4 January 1999. 3. The net total return indices are calculated by applying the withholding tax rates to accrued interest and coupon payments on all coupon bonds. The tax rates may change from time to time due to changes to the withholding tax rate applicable in Thailand. The current and historical withholding tax rate is 15%. 4. The base date of the net total return indices is 20 August 2019.