He said SBI was reviewing home loan rates but no time frame has been decided on hiking them.
"We are reviewing our home loan portfolio, and both fixed and floating rates will be looked into," Purwar said after a meeting with Finance Minister P Chidambaram.
"It is difficult to give a timeframe (on increasing home loan rates) or the quantum, but looking at market conditions it may be 25-50 basis points," he said.
In its annual policy on April 18, the Reserve Bank of India had raised risk weight on commercial property loans to 150 per cent from 125 per cent and provisioning on housing loans above Rs 2 million to 1 per cent from 0.4 per cent.
This is likely to force banks, including SBI, to raise home loan rates. India's largest housing finance company, Housing Development Finance Corp, would take a decision this week on hiking interest rates on retail and bulk home loans.
