The chart above represents surplus retirement money paid through payroll taxes and spent by the government on other programs. Although this money is spent, gone forever, the government first issues "certificates of indebtedness" to the Social Security trust funds. Certificates that are later rolled over into special obligation nonmarketable bonds. The assumption is that the same money can be both spent and saved. The trust fund is paid annual interest against the balance from the previous year. The rate of interest is figured on a five year model of interest paid long terms bonds sold on the "Bond Market." The result is as follows:
			Interest (red section) is paid without money involved. The Treasury simply credits the Social Security trust funds with more nonmarketable bonds. No part of the national debt can be redeemed with anything other than taxpayer money. The Social Security trust funds now account for 22.3 percent of the national debt.