IBM has about 43,000 staff in India, and is using the country as a base for offering services to its customers worldwide including Australia.
The announcement follows claims by the Financial Services Union (FSU) that Westpac's current cost cutting regime includes sending jobs to India by the end of the year.
A Westpac spokesperson confirmed today no decision has been made although a review is well underway.
ANZ already has 1000 software development staff in Bangalore, India.
An ANZ spokesperson confirmed pilots are underway to move more jobs offshore. However, they are operational roles, not IT.
The FSU believes offshoring is the biggest threat to members' jobs in the near term.
National Australia Bank is also undertaking pilots.
The only bank that hasn't taken steps down the offshoring path is the Commonwealth Bank of Australia.
IBM's revenue from the Indian market grew 55 percent last year and 61 percent in the first quarter of this year, as a number of large Indian companies adopted outsourcing as a business strategy.