Pension is a payment made to an individual after his retirement.
The full sum of government pensions received in Singapore is exempt from tax if you are a Singapore tax resident.
Pensions from approved pension schemes
The amount of pension accrued up to 31 Dec 1992 in the approved funds in Singapore is exempt from tax if you retired at the normal retirement age stated in the pension or provident funds/schemes.
You will be taxed on that part of the pension paid out of contributions made to the funds after 31 Dec 1992.
For instance, if there was $100,000 in your pension fund as at 30 Dec1992 and your ex-employer made another payment of $100,000 to your pension fund on 3 Mar 1993, amounts paid out of the second $100,000 is taxable.
How to report
You have to declare the taxable pensions under 'employment - others' in your tax form.