Does covered interest parity hold in practice?

CIP held closely before the 2008 financial crisis. Post-crisis, persistent CIP deviations (basis) emerged, particularly in USD crosses, due to regulatory constraints (leverage ratios, G-SIB surcharges) limiting bank arbitrage capital. The CIP basis represents a funding liquidity premium above theoretical no-arbitrage levels.

How is CIP used to derive implied foreign yields?

Given spot rate, forward rate, and domestic interest rate, the implied foreign rate = (1 + r_d) / (F/S) - 1. This synthetic rate is the cost of accessing foreign currency funding via FX swaps rather than the local market, used heavily by corporates and institutional investors in cross-currency borrowing.

Covered Interest Rate Parity Forward Rate

Calculate the no-arbitrage forward exchange rate using covered interest rate parity: F = S x (1 + r_d) / (1 + r_f), where the forward rate offsets the interest rate differential between two countries.

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Frequently Asked Questions

Does covered interest parity hold in practice?

How is CIP used to derive implied foreign yields?