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What is the Due Date for Tax Filing? FY 2017-18, AY 2018-19

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“The due date for filing returns for FY 2017-18 for businesses requiring tax audit and for companies has been further extended from 15 October 2018 to 31 October 2018. However, there is no extension of date for payment of taxes. Therefore, non payment before 30 September 2018 can result in interest under Section 234A.”
  The due date for filing Income Tax Returns for FY 2017-2018 for Individuals was 31st August 2018. Refer the following table for finding due dates for the Financial Year 2017-2018: Due date for Filing Income Tax Return for FY 2017 - 18 (AY 2018 - 19)  
Category of Taxpayer Due Date for Tax Filing – FY 2017-18
Individual August 31st, 2018
Body of Individuals (BOI) August 31st, 2018
Hindu Undivided Family (HUF) August 31st, 2018
Association of Persons (AOP) August 31st, 2018
Businesses (Requiring Audit) September 30th, 2018 (extended to 31st October 2018)
Businesses (Requiring TP Report) November 30th, 2018
(This is income tax return for the financial year 2017-18. Applicable for income earned from April 1st, 2017 to March 31st, 2018).  

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    Important Due Dates of Income tax return filing for the year 2018   Whenever we talk about income tax, there is various kind of compulsory tax formalities that need to be followed by a person and that too within the specified due dates prescribed, such as filing of income tax returns, paying advance tax on time.   Here is the TAX CALENDAR for 2018. This has important Tax Due and income tax return filing dates for the year 2018.       TAX CALENDAR 2018
Due Date Tax Due
15th March 2018 i. The fourth installment of Advance Tax due for the FY 2017-18 ii. The due date for the whole amount of Advance Tax for FY 2017-18 for taxpayers covered under the presumptive scheme of Section  44AD and 44ADA Read about how to calculate and pay Advance Tax.
15th June 2018 Due date for the First instalment of Advance Tax for the FY 2018-19
31st August 2018 Due date for filing Income tax return for FY 2017-18 for all persons except : i. Companies ii. Non-Companies whose books are required to be audited iii. Working partner of a firm whose accounts are required to be audited
15th September 2018 Due date for the Second instalment of Advance Tax for the FY 2018-19
30th September 2018 (extended to 31st October 2018) Due date for filing of  Audit report/Income tax return for the FY 2017-18 for the following: i. companies ii. Non-Companies Whose books are required to be audited
30th November 2018 i. The due date for filing Audit report for the FY 2017-18 in case of a person who is required to submit a report pertaining to international or specified domestic transactions under section 92E ii. The due date for the report to be furnished in Form 3CEB in respect of international and specified domestic transactions iii. The due date for filing of Income-tax Return for FY 2017-18 for the aforesaid taxpayers
15th December 2018 The Due date for the third installment of Advance Tax for the FY 2018-19
  Further, here, it would be relevant to mention that if the due date for filing the original return of income is missed, on can file a return belatedly called a belated return for the FY 2017-18 on or before 31 March 2019.    

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– If you have missed the due date to file your return, you can still file it before 31 Dec 2018 by paying a fee of Rs 5,000. If you are filing after 31 December 2018, you will have to pay a fee of Rs 10,000. Also to note that the time limit for filing a return late for FY 2017-18 expires on 31 March 2019.