Invest in bank deposits. Interest is taxable. Invest to get interest upto Rs 2.5 lakhs . Form 15 G or 15H can be given every year
( income for citizens of 60 years or more is tax free up to Rs 2.5 lakhs )
Remaining invest in TAX FREE BONDS.
Im not understanding your question but the best retirement account that anybody can have is a ROTH IRA
Best of luck. Take Care
My dad got retirement , Which is best one time investment for his retirement funds ? Whether it is s Tax exempted ?