Austrian bank Bawag has agreed to acquire Ireland's Permanent TSB in a deal valued at $1.9 billion, marking a significant cross-border banking transaction in Europe.

Permanent TSB (PTSB) initiated a sale process last year as part of efforts to enable the Irish government to divest its remaining 57.5% ownership stake in the lender. The government's shareholding in PTSB dates back to the financial crisis when the state provided support to the banking sector.

The acquisition represents Bawag's expansion into the Irish market and provides an exit strategy for the Irish government from its involvement in the banking sector. PTSB is one of Ireland's established retail banks, serving customers across the country with banking and financial services.

The transaction is subject to regulatory approvals and customary closing conditions. Once completed, it will transfer control of the Irish bank from government ownership to the Austrian financial institution.

The deal reflects ongoing consolidation trends in European banking as institutions seek growth opportunities and governments work to reduce their stakes in financial services companies acquired during the 2008 financial crisis.