yield burning means: Municipal bond financing. Advance refundings are added by underwriters Large markups in US Treasury Bonds bought and kept in escrow as a compensation Investors while they wait for the repayment Old bonds are redeemed after the issuance of new bonds. Because bond yields and prices move in the opposite direction Directions, when bonds have been marked up Burn down the yield. Infringe federal tax regulations and reduce tax revenue (in Stock Market Dictionary)