Dubai: Doha Bank, Qatar’s fifth-largest bank by assets, said on Thursday it raised 2 billion riyals ($549 million) through a capital-boosting bond, the latest Gulf lender to tap debt markets to replenish reserves after a period of strong growth.

The statement gave no further details of the bond except to say it was issued on June 30 and would enhance its Tier 1, or core, capital.

In March, the bank said that it would issue Tier 1-enhancing bonds with a perpetual tenor — meaning no fixed redemption date — and an option for the bank to redeem them after six years.

The announcement follows Qatar Islamic Bank, the Gulf state’s largest Sharia-compliant lender by assets, which said earlier this week it had raised 2 billion riyals through a Tier 1 perpetual sukuk offering.

Qatari banks have been able to build their loan books at a fast pace in recent years as the Gulf state spends billions of dollars developing infrastructure and preparing to host the 2022 soccer World Cup.

Loan growth in the banking sector has slipped from advances of more than 10 per cent seen earlier in the decade but still increased 8.2 per cent in April, according to the latest central bank data.

Unlike European peers that have been dogged by capital concerns due to the Eurozone’s struggles, Gulf banks have increasingly turned to capital-enhancing bonds for more positive reasons, seeking to build on existing growth and diversify their sources of capital.

New Basel III banking standards, due to come into full force in 2019, will also oblige banks to set aside more capital.

The conservative stance of Gulf regulators already means they have to build up bigger buffers than their Western peers.

Doha Bank total capital adequacy ratio, a combination of Tier 1 and Tier 2 capital — regarded as one of the key indicators of a bank’s health — stood at 14.67 per cent at the end of first quarter, against a 12.5 per cent minimum prescribed by Qatar’s central bank.