Covered Interest Parity Arbitrage

101 Pages Posted: 5 Dec 2016 Last revised: 2 Jul 2020

See all articles by Dagfinn Rime

Dagfinn Rime

BI Norwegian Business School

Andreas Schrimpf

Bank for International Settlements (BIS) - Monetary and Economic Department

Olav Syrstad

Norges Bank

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Date Written: July 1, 2020


To understand deviations from Covered Interest Parity (CIP) it is crucial to account for heterogeneity in funding costs---both across banks and currency areas. For most market participants, the no-arbitrage relation holds fairly well when implemented using marginal funding costs and risk-free investment instruments. However, a few high-rated banks do enjoy CIP arbitrage opportunities. In equilibrium, dealers avert inventory imbalances coming from lower-rated banks using the FX swap market to cover demand for dollar funding, by inducing opposite (arbitrage) flows from high-rated banks. Arbitrage trades are difficult to scale, however, because funding costs increase as soon as arbitrageurs increase positions.

Keywords: Covered Interest Parity, Money Market Segmentation, Funding Liquidity Risk Premia, FX Swap Market, US Dollar Funding

JEL Classification: E43, F31, G15

Suggested Citation

Rime, Dagfinn and Schrimpf, Andreas and Syrstad, Olav, Covered Interest Parity Arbitrage (July 1, 2020). Available at SSRN: or

Dagfinn Rime (Contact Author)

BI Norwegian Business School ( email )

Nydalsveien 37
Oslo, 0442
+47-46410507 (Phone)


Andreas Schrimpf

Bank for International Settlements (BIS) - Monetary and Economic Department ( email )

Centralbahnplatz 2
CH-4002 Basel

Olav Syrstad

Norges Bank ( email )

P.O. Box 1179
Oslo, N-0107

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