The guarantor shall be any person other than the one already liable for the bill. The interest rate on a debt instrument expressed in terms of a percent on an annualized basis that the issuer guarantees to pay the holder until maturity. 保证人由汇票债务人以外的他人担当。一种利率,是出票人在票据到期时,向持有者支付的债务工具的年金的百分比。