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If you know the face value of the bond and its coupon rate, you can calculate the annual coupon payment by multiplying the coupon rate times the bond's face value. For example, if the coupon rate is 8% and the bond's face value is $1,000, then the annual coupon payment is .08 * 1000 or $80. This only works if your broker provided you with the current yield of the bond. To calculate the payment based on the current yield, just multiply the current yield times the amount that you paid for the bond (note, that might not be the same as the bond's face value). For example, if you paid $800 for a bond and its current yield is 10%, your coupon payment is .1 * 800 or $80. Since bondholders generally receive their coupon payments semiannually, you just divide the annual coupon payment by two to receive the actual coupon payment. For example, if the annual coupon payment is $80, then the actual coupon payment is $80/2 or $40.
Use the coupon rate and the face value to calculate the annual payment. Use the current yield to calculate the annual coupon payment. Calculate the payment by frequency.