Every time is right when you decide to act but it is always better to plan certain aspects of life to be on the right side of the law and same can be also stated about the right time for planning for saving on income tax.
To put in simple terms we can say that the right time to plan your tax saving starts with the beginning of the financial year or once you have your salary structure in hand which is provided to you by your employer.
By planning from the day 1 will make sure that an individual do not miss on any opportunity to save tax or make hasty decisions at the end of the year.
Correct planning will make sure that you are able to make use of the available tax breaks and you will be able to save a considerable amount of sum which otherwise would have had been paid by you as the income tax.
Do check out below links for income tax exemptions available to you.