- Petitioner
- Philippine Savings Bank
- Respondent
- Spouses Alfredo M. Castillo
- Citation
- G.R. No. 193178
- Court
- Supreme Court
- Division
- Second Division
- Ponente
- Nachura, J.
- Decided
- May 30, 2011
Summary
This case involves a challenge to unilateral interest rate modifications in a bank loan agreement. Spouses Castillo and Capati obtained a P2.5 million loan from Philippine Savings Bank with real estate mortgage, containing a clause allowing the bank to unilaterally adjust interest rates. When borrowers defaulted in 1999, the bank foreclosed the properties. The borrowers sued, challenging both the interest rate modifications and foreclosure validity. The Supreme Court ruled that unilateral interest rate changes violated the Civil Code's principle of mutuality of contracts, requiring mutual consent for contract modifications affecting vital components. While ordering refund of excess interest payments above the original 17% rate, the Court upheld the foreclosure as valid and removed damage awards, finding no fraud or bad faith by the bank, only poor business judgment.