Repurchase vs reverse repurchase explained

If you ask a treasurer about repurchases, or ‘repos’, and reverse repurchases, you might hear two different explanations for the same transaction. These terms describe the same deal from different perspectives. In a repurchase agreement, one party borrows cash using collateral, while in a reverse repurchase agreement, the other party lends the cash.

Corporate treasurers comparing secured lending to unsecured bank deposits need to know what each label means. The repo market is one of the world’s biggest sources of short-term funding for banks. Understanding both sides of the transaction matters more than focusing on the terms.

Repo vs reverse repo: One transaction, two names

A repo and a reverse repo are the same transaction described from different perspectives. One party needs cash and offers securities as collateral. The other has extra cash and wants a safe, short-term investment. The name depends on which side you’re on.

The party providing the securities enters into a repurchase agreement. They sell the securities now and agree to repurchase them later at a slightly higher price. The party providing the cash enters into a reverse repurchase agreement, buys the securities now, and agrees to sell them back on the set date. The price difference is the loan's interest.

Inside a repurchase agreement

A repurchase agreement lets an institution borrow short-term cash without permanently selling an asset. For example, a bank or dealer with government bonds can use them as collateral and sell them to another party. They then agree to buy the bonds back on a set date at a set price. The difference between the sale and repurchase prices is the implied interest rate, or repo rate.

Repo agreements can last overnight or several months, and some have no set end date. No matter the term, the structure is the same: cash goes one way, securities the other, and both are returned at maturity. In practice, this setup makes repo a secured loan, even though it’s legally two sales.

Inside a reverse repurchase agreement

A reverse repurchase agreement is the opposite side of the same deal, used by the party providing the cash. Asset managers, corporate treasuries, or money market funds with extra cash can use reverse repo to earn a return. The cash is backed by a specific security held as collateral during the trade. If the other party does not buy back the security, the cash provider keeps it and can sell it to recover their money.

This setup underpins secured cash investment. Instead of putting cash in an unsecured deposit with one bank, the lender has a claim on a specific asset for the whole term. This claim makes reverse repo different from a regular deposit.

Collateral, haircuts, and counterparty risk.

Collateral sets repo apart from unsecured lending. The securities used are usually government bonds or other high-quality, easily traded assets. The value is checked daily and often given a haircut, a small discount that protects the cash provider if prices drop. A bigger haircut means more collateral is needed for the same cash amount.

Many repo deals use a tri-party structure. An independent agent checks the collateral’s value, handles changes, and ensures the coverage ratio is correct during the trade. This reduces operational risk for both parties and helps repo stay resilient during market stress. Our guide to secured Fixed-Term Funds explains collateral coverage ratios in more detail.

The repo market's role in the wider financial system

The repo market handles approximately £250B daily in the UK and supports much of the world’s short-term funding. Banks use repos to finance fixed-income holdings and dealers use them to manage short positions. Central banks operate on both sides of the market to guide overnight interest rates. The Bank of England and the Federal Reserve both have facilities that lend and borrow using high-quality collateral.

Repo isn’t an unusual product. At its heart, it’s secured lending with common legal documents, usually a Global Master Repurchase Agreement, or GMRA. These documents have a long history, created by institutions that understand the risks. For years, the history of the repo market remained largely unknown outside trading floors.

Why this matters for corporate treasury

Most corporate treasurers still keep extra cash in unsecured bank deposits or money market funds. In that setup, the same institution borrows the money and its liquidity is the only source of protection. Reverse repo offers a different option. Here, collateral secures the cash, giving a claim on a specific asset rather than a promise from one counterparty.

Maturities can be as short as overnight, so security doesn’t mean losing liquidity. This is where TreasurySpring’s platform comes in. Secured Fixed-Term Funds (FTFs) let treasurers access the reverse repo market directly. These funds are standardised, regulated, and available through a single onboarding process, rather than months of legal work.

This approach opens up a market once reserved for the biggest banks and asset managers, making it available to regular finance teams that want a safer place to keep their cash.

The takeaway

Repo and reverse repo aren’t separate products. They’re the same transaction, just described from each side. As they’re based on collateral instead of relying on one counterparty’s promise, treasurers who know both sides can make better decisions about where to keep cash and what backs it. 

Contact our team to learn how secured cash investment can work with your current banking setup.

TreasurySpring's blogs and commentaries are provided for general information purposes only and don’t constitute legal, investment or other advice.