"Other operating income decreased by THB377.1mil or 37.2% due to the drop in gains on financial instruments measured at fair value through profit or loss of THB367.8mil.
"Net interest income decreased by THB366.4mil or 12.9%, caused by the lower interest income on loans from the lower credit expansion," it said in a statement to the Stock Exchange of Thailand.
However, net fee and service income partially offset the decline, rising 3.1% y-o-y due to higher insurance brokerage and underwriting income.
The bank's operating expenses fell 15.5% largely due to better cost management lower personnel cost, raising the cost-to-income ratio to 59.3% in the quarter.
Net interest margin over earning assets stood at 3.08% versus 3.31% in the same quarter last year due to the lower interest income on loans.
As at March 31, total gross loans stood at THB219.5bil, or 3.3% lower from Dec 31, 2020.
Deposits fell 2.7% to THB244.7bil from THB251.4bil in Dec 31, 2020.
The modified loan-to-deposit ratio dropped to 89.7% from 90.3% over the same period.
Gross non-performing loans stood at THB10.6bil, which translates to an impaired loan ratio of 4.8% compared to 4.6% on Dec 31, 2020.
"The higher NPL ratio was mainly due to the decrease in total loan outstanding balance, while the non-performing loans have no significantly changed," said CIMB Thai.
Loan loss coverage ratio stood at 98.9% as at March 31, from 93.3% at the end of 2020.
Total allowance for expected credit losses stood at THB9.6bil, which is THB1.9bil over the central bank's reserve requirements.
Total consolidated capital funds as at March 31 stood at THB53.1bil. The BIS ratio stood at 20.3%, of which 14.7% comprised of Tier-1 capital.