(Bloomberg) -- Zenith Bank Plc, Nigeria’s biggest lender by market value, said it set aside 123.4 billion naira ($267 million) in part to account for its holdings of bonds in Ghana, as the nation restructures its debt. 

The bank’s impairments last year doubled from 59.9 billion naira in 2021, Zenith said in emailed statement. Ghana’s debt restructuring “resulted in a very significant impairment expense,” according to the statement. It increased the cost of risk to 3.2%, the lender said. 

Ghana’s move to restructure most of its public debt, estimated at 576 billion cedis ($49 billion) is weighing on banks from the UK to South Africa. The West African nation exchanged 87.8 billion cedis of notes that paid an average of 19%, with bonds returning as little as 8.35% — resulting in losses for financial institutions.  

President Nana Akufo-Addo’s government has also started discussions with international debt holders as it seeks to finalize a $3-billion bailout from the International Monetary Fund.

Four of Africa’s biggest lenders — Standard Bank Group Ltd., FirstRand Ltd., Absa Group Ltd., and Nedbank Group Ltd. — collectively set aside 4.87 billion rand ($267 million) to account for the losses, impairing as much as 57% of local and onshore dollar denominated debt holdings. 

Impairment losses at Societe Generale SA’s Ghana unit jumped more than eight-fold to 284.7 million cedis last year, according to unaudited annual accounts on its website. Meanwhile, Standard Chartered Plc set aside $160 million. 

Zenith is the first Nigerian bank to announce provisions. The lender, which plans to transition into a holding company, is looking to diversify overseas this year to curb risks, it said.

The Lagos-based lender missed net income estimates as profit declined by 8.3% to 224.05 billion naira in 2022 on higher costs, it said in filing to the Nigerian stock exchange on Wednesday. The net income missed the average analyst estimate of 245.84 billion naira, according to data compiled by Bloomberg.

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