COLOMBO - Sri Lanka's monetary authority surprised markets on Tuesday by lifting its benchmark overnight policy rate by an outsized 100 basis points, taking the rate to 8.75% from 7.75%.
The Central Bank of Sri Lanka (CBSL) framed the move as a response to rising inflation and a depreciating rupee linked to the U.S.-Israeli war with Iran, which has pushed up global energy costs. In a statement, the CBSL said headline inflation is likely to remain above the 5% target in the near term before easing and stabilising around it.
Policymakers pointed to significant supply-side pressures stemming from volatility in oil prices and related exchange rate stress. The central bank noted that the Sri Lankan rupee had experienced pronounced depreciation pressures in recent weeks - registering an 8.7% fall since early March - although it said conditions had eased somewhat at the time of the announcement.
The 100 basis-point increase went beyond market expectations. Seven out of a dozen economists and analysts polled by Reuters had predicted only a 25 basis-point move or a slightly larger adjustment, citing concerns about the conflict's impact on foreign exchange reserves.
Sri Lanka, which imports all of its fuel needs, has been hit hard by the Iran-related energy shock. The country has endured a 40% rise in fuel prices, implemented rationing and even introduced public holidays on Wednesdays to manage energy consumption and public mood amid the squeeze.
Annual inflation has moved sharply higher, rising from 2.2% in March to 5.4% last month. The CBSL explicitly signalled that headline inflation could remain above the 5% target for a period before moderating and stabilising around that threshold.
Market observers interpreted the scale of the rate increase as a signal that the central bank is prioritising price stability over near-term growth support. "This 100bps rate hike suggests the CBSL is shifting gears from supporting growth to defending price stability," said Udeeshan Jonas, strategy head at Colombo-based equity research firm CAL. "The central bank clearly expects the supply-side pressures from the Iran conflict - specifically oil price volatility and subsequent pressure on the rupee - to have a prolonged, sticky impact on domestic inflation rather than being a transitory blip."
The CBSL had last adjusted policy in May 2025, when it reduced rates by 25 basis points to try to bolster growth. The abrupt reversal to a sizable tightening underscores the policy trade-offs facing a small, open economy heavily dependent on imported energy.
Sri Lanka is rebuilding its external buffers under a $2.9 billion programme from the International Monetary Fund. The IMF Executive Board was due to meet on Wednesday to consider releasing $700 million under the programme to help replenish reserves. Sri Lanka's foreign exchange reserves have declined by 3.8% to $6.7 billion, according to the central bank's figures.
Takeaways:
- The CBSL raised the overnight rate to 8.75% from 7.75% in a 100 basis-point hike to combat higher inflation and a weakening rupee.
- Inflation rose from 2.2% in March to 5.4% last month, and headline inflation is expected to remain above the 5% target in the near term.
- The economy is feeling a sharp energy shock linked to the U.S.-Israeli war with Iran, producing a 40% fuel price increase, rationing and public holidays on Wednesdays.