
A repurchase agreement is a financial instrument that allows banks to borrow money from the central bank by selling securities with the agreement to buy them back later.
It's essentially a short-term loan for banks, and they use high-quality securities as collateral.
In the United States, repurchase agreements are a key tool for the Federal Reserve to implement monetary policy.
The Fed sets the interest rate on these agreements, which in turn affects the overall interest rate environment in the economy.
What is a Repurchase Agreement?
A repurchase agreement, commonly known as a repo, is a short-term borrowing tool used in government securities markets.
Repos function as a way for dealers to raise short-term capital, and they're typically used to facilitate liquidity and capital management.
In a repo, a dealer sells government securities to an investor, usually overnight, and buys them back the following day at a slightly higher price.
The small price difference is an implicit overnight interest rate, which is a critical component of repo transactions.
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The Federal Reserve has played a significant role in shaping repo market dynamics, particularly during the early 2020s when it increased the volume of repos traded.
Repos are also commonly used in central bank open market operations, and the party selling the security and agreeing to repurchase it later is involved in a repo.
The party buying the security and agreeing to sell it back is engaged in a reverse repurchase agreement or reverse repo.
The difference between the sale price and the repurchase price represents the interest paid on the loan, making repos an effective way for dealers to borrow short-term capital.
Repos are typically overnight transactions using government bonds to provide liquidity in the money markets.
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How Repurchase Agreements Work
Repurchase agreements are considered safe because they use securities like Treasury bonds and mortgage-backed securities as collateral. They're classified as a money market instrument, making them a short-term, collateral-backed, interest-bearing loan.
The buyer acts as a short-term lender, while the seller is a short-term borrower. Repurchase agreements are made between a variety of parties, including the U.S. Federal Reserve, which uses them to regulate the money supply and bank reserves.
The Federal Reserve has recently become more involved in the repo market, establishing the Standing Repo Facility (SRF) and the Overnight Reverse Repo Facility (ON RRP) to manage liquidity in American short-term funding markets.
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How It Works
A repurchase agreement is a short-term, collateral-backed, interest-bearing loan, also known as a money market instrument.
The buyer acts as a short-term lender, while the seller is a short-term borrower, and the agreement is made between a variety of parties, including the U.S. Federal Reserve and individuals.
The maturity period of a repurchase agreement is called the "rate", the "term", or the "tenor", and it's strictly short-term, typically ranging from one to seven days.
The Federal Reserve uses repos to regulate the money supply and bank reserves, and individuals use them to finance the purchase of debt securities or other investments.
Repurchase agreements are considered safe because they use securities like Treasury bonds and mortgage-backed securities as collateral, which can be sold in case of bankruptcy.
The Reserve Bank of India uses repo and reverse repo to increase or decrease money supply in the economy, and the rate at which the RBI lends to commercial banks is called the repo rate.
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The Federal Reserve purchases repo by buying securities and temporarily increasing available cash within the banking system, which can be used to stabilize interest rates.
A sell/buyback is a pair of transactions, a spot sale and a forward repurchase of a security, which is used to benefit from lower financing rates generally available for collateralized as opposed to non-secured borrowing.
A repo is technically a single transaction, whereas a sell/buyback is a pair of transactions, and a sell/buyback does not require any special legal documentation.
In a repo, the coupon payment on the underlying security is passed on immediately to the seller of the security, whereas in a sell/buyback, the coupon payment is passed back to the buyer of the security by adjusting the cash paid at the termination of the sell/buyback.
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How Cash Investors Use
Cash investors use repo to fulfill a specific need for a customized period of time.
Term repo is a flexible tool that allows cash investors to borrow and lend securities for a short period, usually overnight or for a few days.
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Cash investors may utilize term repo to meet their liquidity needs, such as covering unexpected cash shortfalls or taking advantage of market opportunities.
By using term repo, cash investors can access the capital they need without having to sell securities, which can be beneficial for maintaining a diversified portfolio.
Cash investors can also use term repo to earn interest on their excess cash by lending securities to other investors.
Types of Repurchase Agreements
There are various types of repurchase agreements, including overnight repos, term repos, and open repos. Each type has different terms and conditions regarding the duration and interest rates.
General Collateral (GC) repos typically have one repo rate for all government bonds from the same issuer and reflect the general market demand for cash. Special Collateral (Special) repos involve specific securities that are in high demand, leading to a lower repo rate compared to general collateral.
The initial margin is the percentage of the collateral's market value that must be maintained throughout the repo term. The daily valuation of the collateral and the process of issuing margin calls if the collateral's value drops is also a crucial aspect of repo agreements.
Here are the main types of repurchase agreements:
- Overnight repos
- Term repos
- Open repos
The conclusion of a repo transaction involves the final step where the repo transaction is concluded, and the securities are returned to the seller.
Types of Securities
High-quality debt instruments with little risk of default are most commonly used in repurchase agreements, such as government bonds, corporate bonds, or mortgage-backed securities. These instruments have a predictable value and reflect the value of the loan.
Other assets can be used as collateral, such as equity market indexes. This is because they are easy to sell in the event the loan isn't repaid on time.
Here are some common types of securities used in repurchase agreements:
- Government bonds
- Corporate bonds
- Mortgage-backed securities
- Equity market indexes
These securities are chosen because they have a high market value and are easily transferable, making them ideal for use as collateral in repurchase agreements.
Structure and Terms
In a repurchase agreement, the participants are referred to as the borrower and the lender. The borrower is the one who sells securities, while the lender is the one who buys them and provides the cash.
The borrower and lender engage in a transaction where the lender provides cash to the borrower in exchange for securities, which serve as collateral.
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The near leg of the transaction involves the borrower selling securities, while the far leg involves the borrower buying securities back from the lender.
A key aspect of repurchase agreements is that the lender bears the risk of the borrower defaulting on the loan.
Here's a summary of the terminology:
The interest rate on an open repo is generally close to the federal funds rate, and interest is paid monthly.
Structure and Terms
A repurchase agreement, or repo, involves a cash borrower and a cash provider engaging in a transaction where bonds are used as collateral. The process includes the inception of the agreement, the exchange of collateral and cash, and the maturity of the repo.
The key participants in a repo are the borrower and the provider. The borrower sells securities to the provider, who then agrees to repurchase them at a later date. The table below summarizes the terminology:
In a repo, the interest rate is fixed and is paid at maturity by the dealer, or it can be repriced periodically by mutual agreement, with the interest rate on an open repo generally close to the federal funds rate.
Facility

A repo facility is essentially a secured loan where the investor/lender provides cash to the borrower, secured by the borrower's collateral, typically bonds.
The investor/lender charges interest, known as the repo rate, which is repaid along with the principal when the borrower repurchases the security as agreed.
Repo transactions are economically similar to secured loans, with the buyer receiving securities as collateral to protect against default by the seller.
The party who initially sells the securities is effectively the borrower, while many institutional investors, such as mutual funds and hedge funds, engage in repo transactions.
A key aspect of repos is that they are legally recognized as a single transaction, which is important in case of counterparty insolvency.
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Due Bill / Hold / Bilateral
In a due bill repo, the seller retains possession of the security, but the buyer gets a due bill, which is a document acknowledging the debt. This type of repo is less common than others.

The due bill acts as collateral, ensuring the buyer can recover their investment if the seller defaults. The buyer can then use this collateral to secure the loan.
In a hold repo, the seller gets cash for the security but holds it in a custodial account for the buyer. This type of repo is less common due to the risk of the seller becoming insolvent and the borrower not having access to the collateral.
A bilateral repo is a type of repo where the buyer and seller have a direct agreement, without the need for a third-party intermediary. This is often the case in whole loan repos, where the transaction is collateralized by a loan or other form of obligation.
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Term vs Open: Time Frames
Term repos have a fixed end date or maturity date, while open repos do not have a specified end date and can be terminated by either party at any time.

A term repo can have a maturity date as short as the following day or as long as a week, and is often used to invest cash or finance assets when the parties know how long they need.
Interest is paid at maturity by the dealer in a term repo, and the interest rate is fixed.
In contrast, open repos have no fixed end date and can roll over into the next day if not closed, with interest paid monthly.
The interest rate on an open repo is generally close to the federal funds rate, making it a popular choice for parties that don't know how long they'll need to invest cash or finance assets.
Term repos typically have a higher rate than open repos, but are often used for longer-term transactions, such as those with a maturity of up to two years.
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Near and Far Legs in Transactions
In a repo transaction, there are two distinct legs: the near leg and the far leg. The near leg involves selling securities, while the far leg involves buying securities.
The terminology for the participants in a repo transaction is also important to understand. In the near leg, the participant sells securities, and can be referred to as a borrower, seller, or cash receiver. On the other hand, in the far leg, the participant buys securities and can be referred to as a lender, buyer, or cash provider.
Here's a summary of the terminology for the near and far legs in a repo transaction:
In a repo transaction, the near leg and far leg can be thought of as two separate transactions with the same cash flows. However, the key difference lies in the ownership and possession of the securities being transferred.
Key Concepts and Risks
Repurchase agreements are a type of short-term borrowing tool where one party sells securities to another with an agreement to repurchase them at a higher price at a later date. They are commonly used in money markets to provide liquidity and secure financing.
There are various types of repurchase agreements, including overnight repos, term repos, and open repos, each with different terms and conditions regarding the duration and interest rates. The longer the term of the repo, the more likely the collateral security's value will fluctuate before the repurchase.
The risks associated with repos include counterparty risk, where one party may default on the agreement, as well as market risk, where the value of the collateral may fluctuate according to macro-economic conditions. Credit risk, market risk, and liquidity risk are also significant concerns in repurchase agreements.
- Credit Risk: the risk that the collateral may not fully cover the loaned cash, creating credit risk for the cash lender
- Market Risk: the risk that the collateral's market value may drop significantly during the repo term, leading to potential losses
- Liquidity Risk: the risk that the collateral may not be easily liquidated in the market
Risks
Risks are a natural part of any financial transaction, and repurchase agreements are no exception. There are several types of risks associated with repos, including counterparty risk.
Counterparty risk is the risk that one party may default on the agreement. This can happen if the borrower fails to repurchase the securities at the maturity date, leaving the buyer to liquidate the security and potentially take a loss. The security may have lost value since the outset of the transaction, as it's subject to market movements.
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Credit risk is another significant concern in repos. This type of risk occurs when the collateral provided does not fully cover the loaned cash, creating credit risk for the cash lender. In other words, the lender may not be able to recover the full amount of the loan if the borrower defaults.
Market risk is also a risk factor in repos. This type of risk occurs when the value of the collateral fluctuates significantly during the repo term, leading to potential losses for the lender. Liquidity risk is another risk associated with repos, where the collateral may not be easily liquidated in the market.
Here are some of the key risks associated with repos:
- Credit Risk: the risk that the collateral may not fully cover the loaned cash, creating credit risk for the cash lender
- Market Risk: the risk that the collateral’s market value may drop significantly during the repo term, leading to potential losses
- Liquidity Risk: the risk that the collateral may not be easily liquidated in the market
To mitigate these risks, repos often involve over-collateralization and daily mark-to-market margining. This means that if the value of the collateral falls, a margin call can be triggered, requiring the borrower to post extra securities. Conversely, if the value of the collateral rises, there is a credit risk for the borrower in that the creditor may not sell them back.
Rate Influencers

The repo rate is influenced by several factors, including the credit quality of the collateral and the supply and demand dynamics.
Repo rates for each transaction are negotiated based on several other factors including market conditions, supply and demand for certain forms of collateral, and the credit quality of the underlying securities.
The two most important factors that impact repo rates are the terms of the agreement including tenor and price of the collateral, and the types of securities subject to the repurchase agreement.
Traditional securities used in repo agreements include U.S. Government securities, such as U.S. Treasuries, agency debt, and agency mortgage-backed securities (MBS).
Non-traditional securities used in repo agreements include non-government securities, including corporate investment grade and non-investment grade debt as well as equity securities.
The spread between the unsecured borrowing rate and the repo rate is driven by these factors.
Term vs. Open
A term repurchase agreement has a specific maturity date, usually the following day, though it can be up to a week. This type of agreement is used to invest cash or finance assets when the parties know how long they need.

The interest rate on a term repo is fixed and is paid at maturity by the dealer. A term repo is typically used for short-term borrowing.
In contrast, an open repurchase agreement, also known as an "on-demand repo", works the same way as a term repo, except the dealer and counterparty agree to the transaction without setting the maturity date. This type of agreement can be terminated by either party at any time.
Open repos are used to invest cash or finance assets when the parties do not know how long they will need to do so. The interest rate on an open repo is generally close to the federal funds rate.
Here's a summary of the key differences between term and open repurchase agreements:
Market and Economic Impact
The repo market has a significant impact on the economy. An increase in repo rates can discourage people and businesses from taking out loans, cutting consumer spending and business investment.
In 2008, the financial crisis revealed problems with the repo market, including a reliance on intraday credit and a lack of effective plans to liquidate collateral. This led to new regulations, which increased pressure on banks to maintain their safest assets, such as Treasurys.
The repo rate is a crucial tool for central banks to control the money supply. In India, the Reserve Bank of India uses repo and reverse repo to increase or decrease money supply in the economy. The RBI repo rate is currently set at 4.00%.
The repo market has grown significantly since the financial crisis, with the estimated value of global securities lent through repos peaking at about $4.7 trillion in June 2023. The Federal Reserve has been a major player in the repo market, with its repo agreements growing from about $1 trillion in assets in the spring of 2021 to $2.7 trillion by December 2022.
A decrease in repo rates can make borrowing cheaper, resulting in more money being spent and moving around the economy. This can be helpful when central banks want to stimulate the economy.
Here are the potential effects of an increase in repo rates:
- Cuts consumer spending and business investment
- Squeezes lenders' profits
- Increases interest rates on loans
- Increases APYs on savings accounts and other deposit accounts
The repo rate is influenced by market liquidity and expectations for future interest rates. It's a crucial rate for maintaining liquidity in the financial markets, providing market participants with access to low-cost, secured financing to purchase securities.
Example and Usage
A repurchase agreement is a common financial tool used by banks, investors, and even central banks. In fact, banks can use repos to get a quick cash injection by selling Treasury bonds to an investor, who then agrees to repurchase them at a slight premium.
For the buyer, a repo is a short-term and safer investment opportunity, as they receive collateral in the form of Treasury bonds. Market liquidity for repos is good, and rates are competitive for investors.
Money Funds are large buyers of Repurchase Agreements, as they provide a customized investment period for the buyer. This flexibility is a major advantage of repos compared to other investments, which typically limit tenures.
In India, the Reserve Bank of India (RBI) uses repo and reverse repo to increase or decrease money supply in the economy. The RBI's repo rate, currently set at 4.00%, plays a key role in regulating the money supply.
The Federal Reserve in the US also uses repo operations to regulate the money supply and bank reserves, helping to keep the federal funds rate within the target range. By engaging in open market operations, the Fed can temporarily increase or decrease available cash within the banking system.
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How BlackRock Uses

BlackRock uses repurchase agreements to strengthen the liquidity characteristics of their funds and generate total returns on excess cash balances. They vet potential repo transactions through a three-tiered credit review process to determine associated risks.
BlackRock carefully analyzes each counterparty to ensure the portfolios meet their high credit standards. This helps mitigate potential risks.
In a repurchase agreement, the borrower sells assets, such as government bonds, to a lender and agrees to repurchase them at a higher price after a specified period. The difference in price represents the interest paid by the borrower.
The borrower, often a bank, temporarily relinquishes control of the assets, such as Treasury bonds, in exchange for a quick cash injection. The assets serve as collateral, ensuring the lender's investment is secured.
BlackRock allocates assets to repos to generate returns on excess cash balances. The bank gets the assets back by paying back the money received plus a little extra.
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Uses

For the buyer, a repo is an opportunity to invest cash for a customized period of time. This is because repos typically have flexible tenures, unlike other investments that often limit tenures to a fixed period.
Market liquidity for repos is good, making it an attractive option for those looking to invest cash. As a secured investment, the investor receives collateral, which adds an extra layer of security.
Money Funds are large buyers of Repurchase Agreements, taking advantage of the competitive rates and good market liquidity. This makes repos a popular choice for institutional investors.
For traders in trading firms, repos are used to finance long positions by posting securities as collateral. This allows them to access cheaper funding costs for long positions in other speculative investments.
Repos are also used to cover short positions in securities via a "reverse repo and sale". This provides traders with a way to manage their risk and maintain liquidity in the market.
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The Federal Reserve uses repos to stabilize interest rates and adjust the federal funds rate to match the target rate. They achieve this by buying and selling securities with primary dealers.
By using repos, the Federal Reserve can add or withdraw reserves from the banking system, influencing the money supply and bank reserves. This helps keep the federal funds rate within the target range set by the Federal Open Market Committee.
In India, the Reserve Bank of India uses repo and reverse repo to increase or decrease money supply in the economy. The repo rate, currently set at 4.00%, is the rate at which the RBI lends to commercial banks.
Cash investors may utilize term repo to fulfill a specific need for a customized period of time. This allows them to manage their cash flow and take advantage of the competitive rates offered by repos.
BlackRock allocates assets to repos in effort to strengthen the liquidity characteristics of the funds, as well as to generate total returns on excess cash balances. They carefully analyze each counterparty to ensure that the portfolios meet their high credit standards.
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Key Terms and Definitions
A repurchase agreement, or repo for short, is a type of short-term borrowing tool where one party sells securities to another with an agreement to repurchase them at a higher price at a later date.
The terminology surrounding repos can be a bit confusing, but it's essential to understand the key terms involved. Let's break down the main players in a repo transaction:
In a repo transaction, there are two types of transactions with identical cash flows, but with a key difference: in one, the asset is sold and later re-purchased, while in the other, the asset is pledged as collateral for a loan.
Mathematical and Technical Aspects
In a repurchase agreement, the repo rate is calculated using a mathematical formula. The repo rate is the annualized interest rate of the transaction.
The formula for the repo rate is the time-adjusted difference between the price of the security at the near date and the price at the far date, divided by the price at the near date, multiplied by the number of days between the two dates, divided by 365.
The time-adjusted difference between the two prices is calculated by dividing the difference between the two prices by the price at the near date. This gives us the interest rate for the period between the near date and the far date.
The number of days between the two dates is divided by 365 to annualize the interest rate. This means that the interest rate is calculated as if it were for a full year, rather than just the number of days between the two dates.
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Operational and Regulatory Aspects
A repurchase agreement is typically collateralized by high-quality, liquid assets such as government securities or corporate bonds.
The counterparty to the repurchase agreement, also known as the seller, must maintain sufficient collateral to cover the agreement's value.
The repurchase agreement is usually structured as a short-term loan, with the agreement lasting from a few days to several weeks or even months.
The lender, or buyer, can sell the collateral to raise cash, but must return the collateral to the seller by the agreement's maturity date.
The repurchase agreement is subject to regulatory oversight, particularly in the banking and financial sectors.
Frequently Asked Questions
What are the benefits of a repurchase agreement?
Repurchase agreements provide immediate cash flow backed by high-quality collateral, benefiting both borrowers and lenders. They offer a reliable and flexible method for short-term funding with generally low risk.
Who buys repurchase agreements?
Securities market intermediaries and leveraged investors typically buy repurchase agreements to secure funding
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