Treasury Inflation-Protected Securities: Inflation-Indexed Government Bonds

Treasury Inflation-Protected Securities (TIPS) are a type of government-issued bond designed to help investors protect their investment against inflation. These securities are unique in that their principal is adjusted by changes in the Consumer Price Index (CPI), which measures inflation.

Definition

Treasury Inflation-Protected Securities (TIPS) are bonds issued by the U.S. Department of the Treasury. They are designed to provide protection against inflation. The principal of a TIPS increases with inflation and decreases with deflation, as measured by the Consumer Price Index (CPI). When TIPS mature, investors are paid the adjusted principal or the original principal, whichever is greater.

Here is the key formula for TIPS adjustment:

Additionally, TIPS pay interest twice a year at a fixed rate. However, the interest payments increase with inflation because they are calculated on the adjusted principal.

Types of TIPS

TIPS are offered in the following maturities:

• 5-Year TIPS
• 10-Year TIPS
• 30-Year TIPS

These varying durations provide investors with different options to suit their investment horizon and risk tolerance.

Tax Implications

Investors in TIPS should consider the tax implications. The increase in TIPS principal due to inflation adjustments is considered taxable income for the year in which it occurs, even though the investor doesn’t receive the adjusted principal until maturity. This leads to a situation known as “phantom income,” where investors owe taxes on income they haven’t received yet.

Examples of TIPS in Practice

Assume an investor purchases $1,000 of TIPS with an annual interest rate of 1.5%. If inflation rises by 3%:

The semi-annual interest payment would be:

Applicability

Investors often turn to TIPS for the following reasons:

• Inflation Protection: Directly linked to the CPI, ensuring that the investment keeps pace with inflation.
• Safety: Backed by the U.S. government, making them a low-risk investment.
• Interest Income: Provides a regular income stream through semi-annual interest payments.

Comparisons

• Regular Treasury Bonds: Unlike TIPS, the principal of regular Treasury bonds is fixed and thus vulnerable to inflation.
• Inflation-linked Savings Bonds (I Bonds): I Bonds also offer inflation protection but cannot be traded in the secondary market and have different tax considerations.

Related Terms

• Consumer Price Index (CPI): A measure of the average change over time in the prices paid by urban consumers for a basket of consumer goods and services.
• Phantom Income: Income that is taxed before it is received by the investor.

FAQs