Basis Risk

Basis risk arises when the hedge does not perfectly match the underlying exposure. In real estate, the most common example is a mismatch between the benchmark rate used in a loan and the benchmark rate used in an interest rate swap. If your mortgage is priced off EIBOR but your swap references SOFR, changes in the spread between these two rates create unhedged exposure.

UAE property loans are commonly priced off EIBOR (3-month or 1-month). If an investor hedges using a USD-denominated interest rate swap (referencing SOFR), basis risk exists because EIBOR and SOFR do not move in lockstep, despite the AED-USD peg. Property income in AED may not correlate perfectly with EIBOR movements, creating a natural basis risk between debt costs and revenue.

Basis risk is relevant primarily for investors who use derivatives to hedge their financing costs. If you hedge a floating-rate EIBOR loan with a USD SOFR swap, any divergence between EIBOR and SOFR becomes an unhedged exposure. The hedge protects against most of the interest rate movement but not all of it, leaving a residual cost or saving that changes unpredictably.

For most direct property investors without complex hedging structures, basis risk is a background concern rather than an active management item. It becomes significant when structuring large commercial transactions with interest rate caps or swaps, or when holding cross-currency property portfolios where rent and debt are denominated in different currencies.