Electro Optic Systems has repaid $20.5 million in debt, completing 50% of its owed principal to Washington H. Soul Pattinson (ASX:SOL) and clearing the entirety of its working capital facility.

The remaining liability, a term loan facility of $52.1 million, reflects the company's financial management.

The repayment includes principal, establishment fees, and accrued interest, with a maturity date in October 2025.

Electro Optic Systems will continue to meet monthly interest payments of around $19 million.