On 16 September 2026 the Central Bank of the UAE moved its base rate from 3.65% to 3.90%, a 25 basis point step effective the next day. The move is mechanical, not local: the dirham's dollar peg means changes to the US Interest Rate on Reserve Balances pass through almost automatically, and this rise followed the Fed's own 25 basis point move by hours.
What the base rate actually measures
The base rate prices the overnight deposit facility and sets the floor for overnight money market rates in the UAE. The central bank's own lending window sits a fixed 50 basis points above it, so one number now describes both. It had held at 3.65% before this change.
Where this shows up downstream
Dubai's variable mortgages track EIBOR, and EIBOR tracks the base rate closely, so the series works as a proxy for repricing pressure on outstanding loans. On a AED 1,500,000 mortgage over 25 years, 25 basis points adds roughly AED 210 to AED 215 a month, a figure that scales close to linearly with principal. The harder variable is timing: banks reprice on the reset date in the offer letter, not on the announcement date, so a dataset built only from announcement dates will overstate how fast the change reaches borrowers. A fixed offer like ADCB's 3.49%, signed two days before this rise, is worth tracking against the base rate spread over time.
Originally published on Doment, Dubai property intelligence.
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