Glossary/Derivatives & Market Structure/Interest Rate Swap
Derivatives & Market Structure
2 min readUpdated Apr 2, 2026

Interest Rate Swap

IRSfixed-for-floating swapplain vanilla swap

A derivative contract in which two parties exchange interest payments on a notional amount — one paying a fixed rate, the other paying a floating rate — the most widely traded derivative in the world.

Current Macro RegimeSTAGFLATIONDEEPENING

The macro regime is unambiguously STAGFLATION DEEPENING, with the activation of 'Operation Epic Fury' representing a genuine geopolitical regime break that has moved the Hormuz risk from tail to base case. The dominant market narrative for the next 2-6 weeks is the US-Iran military confrontation: Tr…

Analysis from Apr 2, 2026

What Is an Interest Rate Swap?

An interest rate swap (IRS) is an agreement between two parties to exchange interest rate cash flows over a set period on a notional principal amount (which itself is never exchanged). In the most common "plain vanilla" swap:

  • Party A pays a fixed rate (the "swap rate")
  • Party B pays a floating rate (typically tied to SOFR or previously LIBOR)

Example: Company A has issued floating-rate debt (SOFR + 200bps) but wants certainty about its interest costs. It enters a swap, paying fixed 4.5% to Bank B and receiving SOFR. Net result: Company A pays 4.5% + 200bps = 6.5% total — now fixed.

The Swap Market

The global IRS market has a notional outstanding of over $400 trillion — by far the largest derivatives market. The primary participants are:

  • Banks and dealers: Market-making and managing their own interest rate exposure
  • Corporations: Hedging debt costs
  • Pension funds and insurance companies: Matching long-duration liabilities
  • Governments: Some sovereigns use swaps to manage debt profiles
  • Hedge funds: Speculative positioning on rate direction

Swap Spreads

The swap spread is the difference between the swap rate and the yield on a Treasury of the same maturity. In theory, swap rates should be above Treasury yields (reflecting bank credit risk in the swap). However, in 2019–2020, US swap spreads turned negative — Treasuries yielded more than swaps — a sign of systemic dysfunction and dealer balance sheet constraints.

Overnight Indexed Swaps (OIS)

An Overnight Indexed Swap exchanges a fixed rate for the daily compounded SOFR (overnight) rate. The OIS rate is the market's expectation of the average overnight rate over the swap's life — a cleaner measure of rate expectations than Treasury yields. The OIS-LIBOR spread (now OIS-SOFR spread) is a key funding stress indicator.

What to Watch

  • 5y and 10y swap rates: Market-implied expectations for medium-term rates
  • Swap spreads: Negative spreads signal Treasury supply pressure or dealer balance sheet stress
  • SOFR-OIS spread: Indicator of short-term funding market stress

Interest Rate Swap is one of the signals monitored daily in the AI-driven macro analysis on Convex Trading. The platform synthesises data across monetary policy, credit, sentiment, and on-chain metrics to generate actionable trade recommendations. Create a free account to build your own signal layer and see how Interest Rate Swap is influencing current positions.