A retirement and pension calculator will require you to provide details, such as your age, smoking habits, gender, etc., and other factors, including how much you want to invest, the type of annuity desired, the premium payment term, and the premium payment mode.
After you provide these inputs, the pension calculator will provide the results corresponding to your applicable premium, premium payment term, and annuity amount.
Depending on your age and the funds you want to invest in the retirement plan, the retirement planning calculator will multiply this amount with a certain compounding rate to present a close estimate of the retirement corpus that you will be able to save over the years.
If you are 40 years old and wish to retire at the age of 65 years, it means you have 25 years in hand to save for your retirement. Assume that you will be saving at least 10% of your annual income each year for your retirement, and basis the plan chosen, you will be able to see in the online retirement planning calculator how much you can save when you reach retirement age.
If you start planning your retirement earlier, you will be able to get higher returns, and the compounding will also be greater as the investment tenure is longer.