What are Spanish Treasury bills (Letras del Tesoro)?
Spanish Treasury bills (Letras del Tesoro) are short-term debt instruments issued by the government, acting as a tool to finance its activities and projects. This type of instrument is considered highly secure because it is backed by the solvency of the issuing State.
They also stand out for their liquidity and flexibility, making them an attractive option for both institutional and individual investors looking to diversify their portfolios. Throughout this article, we will unpack the details of Treasury bills — how they work, their features and their benefits — to give you a comprehensive understanding of this versatile financial instrument.
Main features
To understand what Treasury bills are, it helps to know their main characteristics. Treasury bills have a series of distinctive features that set them apart from other investment instruments. Some of the most relevant are detailed below:
- Term: They are short-term securities, generally with maturities of no more than one year.
- Interest rate: They are issued at a discount, meaning the investor buys them below their face value and receives the full face value at maturity.
- Security: Given their government nature, they are considered low-risk investments, making them ideal for conservative profiles.
How Treasury bills work
Treasury bills operate through a well-structured process covering their issuance, purchase and maturity. The key aspects of how these financial instruments work are described below:
- Issuance and auction: The bills are issued by the government through the Spanish Treasury (Tesoro Público). Auctions are held in which investors can take part to acquire these bills. There are two types of auction: competitive and non-competitive.
- Price and face value: They are issued at a discount, which means they are bought for less than their face value. At maturity, the investor receives the bill's face value, earning a profit based on the difference between the purchase price and the face value.
- Maturity: They are short-term instruments, with maturities of 3, 6, 9 and 12 months.
- Trading on the secondary market: Although they are initially acquired at the Spanish Treasury's auctions, they can also be bought and sold on the secondary market (through an intermediary, such as us, for example)
- Return and risks: The return on Treasury bills is determined by the difference between the purchase price and the value at maturity. Although they are considered low-risk investments, they are not entirely free of risks, such as interest rate risk and reinvestment risk.
Each of these elements shapes the overall workings of Treasury bills, defining their structure, how they are acquired and the ways in which investors can benefit or face risks when investing in them.
How do you buy Treasury bills?
Treasury bills are acquired through auctions held regularly by the Spanish Treasury (Tesoro Público). Both institutional and individual investors can take part in these auctions, acquiring these short-term debt securities.
The Treasury bill auction process works as follows:
- Auction announcement: the relevant information is published, such as the date, the amount to be issued and the terms of the auction.
- Submission of bids: interested investors submit their bids, specifying the amount they wish to acquire and the price they are willing to pay.
- Allotment: the auction winners are determined and the Treasury bills are allocated to them according to their bids.
There are two types of Treasury bill auction. On the one hand, there is the competitive auction, aimed mainly at institutional investors, where each participant specifies the price or yield they are willing to accept. On the other hand, there is the NON-competitive auction, intended for small investors, where the price is set on the basis of the accepted competitive bids and participants agree to accept whatever price is allotted.
Treasury bills can also be bought directly from the Banco de España, either in person or through the website www.tesoro.es. Lastly, they can be acquired through brokerage firms, financial institutions and/or securities agencies, although in these cases a fee is charged for the transaction.
How much does it cost to buy a Treasury bill?
These debt instruments require a minimum initial investment of €1,000 per request, and investments above this amount must be increased in multiples of €1,000. It is also essential to bear in mind that a €10 deposit at the Banco de España is required for each additional €1,000 invested.
What are Treasury bills for?
Treasury bills serve several functions and objectives, both for the issuing government and for investors. The main purposes of this financial instrument are detailed below:
- Government financing: They are a tool that allows governments to obtain short-term funding to cover their needs and keep their accounts in balance.
- Monetary policy instrument: Central banks can buy or sell Treasury bills on the open market to help control the amount of money in circulation and, in turn, influence interest rates and inflation.
- Investment for the public and institutions: For both individual and institutional investors, they represent an investment opportunity that diversifies the portfolio while keeping risks low thanks to their conservative nature.
- Liquidity management tool: Companies and financial institutions also use them as a tool to manage their liquidity. Given their short duration and high liquidity, they are ideal for investing temporary cash surpluses, keeping the money available when it is needed.
Each of these functions shows the versatility of Treasury bills and their importance within the financial system and the wider economy. Their contribution goes beyond being simple investment instruments, playing vital roles in public administration, monetary policy and the promotion of saving and investment.
Benefits and risks of Treasury bills
Treasury bills offer several benefits, such as diversification, since they allow you to diversify your portfolio as an alternative to other instruments such as shares or bonds; liquidity, because they make liquidity management easier thanks to how readily they trade on the secondary market; and security, as their government backing makes them a stable, low-risk investment.
However, this does not exempt them from certain contingencies. Their main risk is interest rate risk: interest rates may rise, reducing the market value of the bills.
So, what are Treasury bills?
In short, Treasury bills are a valuable option within the range of investment instruments available. Their ability to provide security, liquidity and diversification makes them suitable for different investor profiles, from institutions to individuals.
It is essential, however, that each investor weighs their own objectives and risk tolerance to decide whether Treasury bills belong in their investment strategy.
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