Treasury bill

Treasury bills (or T-bills) mature in one year or less. Like zero-coupon bonds, they do not pay interest prior to maturity; instead they are sold at a discount of the par value to create a positive yield to maturity. Many regard treasury bills to be the most risk-free investment for U.S. investors.

Regular weekly T-Bills are commonly issued with maturity dates of 91 days (or 13 weeks, about 3 months), and 182 days (or 26 weeks, about 6 months). Treasury Bills are sold by single price auctions held weekly. Offering amounts for 13-week and 26-week bills are announced each Thursday for auction at 1:00 pm on the following Monday and settlement, or issuance, on Thursday. Offering amounts for 4-week bills are announced on Monday for auction the next day, Tuesday, at 1:00 pm and issuance on Thursday. Purchase orders at TreasuryDirect must be entered before 11:30 on the Monday of the auction. The minimum purchase amount is $1,000. (This amount formerly had been $10,000.) Mature T-bills are also redeemed on each Thursday. Banks and financial institutions, especially primary dealers, are the largest purchasers of T-Bills.

Like other securities, individual issues of T-bills are identified with a unique CUSIP number. The 13-week bill issued three months after a 26-week bill is considered a re-opening of the 26-week bill and is given the same CUSIP number. The 4-week bill issued two months after that and maturing on the same day is also considered a re-opening of the 26-week bill and shares the same CUSIP number. For example, the 26-week bill issued on March 22, 2007 and maturing on September 20, 2007 has the same CUSIP number (912795A27) as the 13-week bill issued on June 21, 2007 and maturing on September 20, 2007, and as the 4-week bill issued on August 23, 2007 that matures on September 20, 2007.

During periods when Treasury cash balances are particularly low, the Treasury may sell cash management bills (or CMBs). These are sold at a discount and by auction just like weekly Treasury bills. They differ in that they are irregular in amount, term (often less than 21 days), and day of the week for auction, issuance, and maturity. When CMBs mature on the same day as a regular weekly bill, usually Thursday, they are said to be on-cycle. The CMB is considered another reopening of the bill and has the same CUSIP. When CMBs mature on any other day, they are off-cycle and have a different CUSIP number.

Treasury bills are quoted for purchase and sale in the secondary market on an annualized percentage yield to maturity, or basis.

With the advent of TreasuryDirect, individuals can now purchase T-Bills online and have funds withdrawn and deposited directly to their personal bank account and earn higher interest rates on their savings.

General calculation for yield on Treasury bills is

Treasury note

Treasury notes (or T-Notes) mature in two to ten years. They have a coupon payment every six months, and are commonly issued with maturities dates of 2, 5 or 10 years, for denominations from $1,000 to $1,000,000.

T-Notes and T-Bonds are quoted on the secondary market at percentage of par in thirty-seconds of a point. Thus, for example, a quote of 95:07 on a note indicates that it is trading at a discount: $952.19 (i.e. 95 7/32%) for a $1,000 bond. (Several different notations may be used for bond price quotes. The example of 95 and 7/32 points may be written as 95:07, or 95-07, or 95'07, or decimalized as 95.21875.) Other notation includes a +, which indicates 1/64 points and a third digit may be specified to represent 1/256 points. Examples include 95:07+ which equates to (95 + 7/32 + 1/64) and 95:073 which equates to (95 + 7/32 + 3/256). Notation such as 95:073+ is unusual and not typically used.

The 10-year Treasury note has become the security most frequently quoted when discussing the performance of the U.S. government-bond market and is used to convey the market's take on longer-term macroeconomic expectations.

Treasury bond

Treasury bonds (T-Bonds, or the long bond) have the longest maturity, from ten years to thirty years. They have coupon payment every six months like T-Notes, and are commonly issued with maturity of thirty years. The secondary market is highly liquid, so the yield on the most recent T-Bond offering was commonly used as a proxy for long-term interest rates in general. This role has largely been taken over by the 10-year note, as the size and frequency of long-term bond issues declined significantly in the 1990s and early 2000s.

The U.S. Federal government stopped issuing the well-known 30-year Treasury bonds (often called long-bonds) on October 31, 2001. As the U.S. government used its budget surpluses to pay down the Federal debt in the late 1990s, the 10-year Treasury note began to replace the 30-year Treasury bond as the general, most-followed metric of the U.S. bond market. However, due to demand from pension funds and large, long-term institutional investors, along with a need to diversify the Treasury's liabilities - and also because the flatter yield curve meant that the opportunity cost of selling long-dated debt had dropped - the 30-year Treasury bond was re-introduced in February 2006 and is now issued quarterly. This will bring the U.S. in line with Japan and European governments issuing longer-dated maturities amid growing global demand from pension funds. Some countries, including France and the United Kingdom, have begun offering a 50-year bond, known as a Methuselah.