NOTE 6 — DEBT AND RELATED INTEREST

Borrowing Limits and Debt

Under the Postal Reorganization Act, as amended by Public Laws 101-227 and 109-435, we can issue and sell debt obligations. However, at year-end we are limited to net annual increases of $3 billion in our debt. Our total debt cannot exceed $15 billion.

The fair value of our debt is what it would cost to pay off the debt if we used the current yield on equivalent U.S. Treasury notes. At year-end, the current estimated value of our debt is $10,194 million. See Note 13, Fair Value Measurement, for more information.