GST & Income Tax ๐Ÿ“Œ 20 Important Things to Do Before 31st March 2026

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(GST & Income Tax Year-End Compliance Guide)

As the financial year 2025โ€“26 comes to an end, 31st March 2026 becomes extremely important for businesses, professionals, exporters, and salaried individuals.

Many options, tax planning opportunities, and compliance decisions must be completed before year-end. Missing these deadlines can lead to higher tax liability, penalties, or loss of benefits.

Here is a complete checklist.


๐Ÿ”ต PART A โ€“ INCOME TAX TASKS BEFORE 31 MARCH 2026


1๏ธโƒฃ Pay Advance Tax (If Applicable)

If total tax liability for FY 2025-26 exceeds โ‚น10,000:

  • Pay final installment of advance tax by 15th March (already due)
  • Review if any shortfall remains
  • Pay before 31 March to reduce interest under section 234B/234C

2๏ธโƒฃ Tax Planning & Investments

This is the last opportunity to:

  • Invest in 80C (LIC, PPF, ELSS, etc.)
  • Pay health insurance for 80D
  • Contribute to NPS (80CCD(1B))
  • Claim HRA and other exemptions
  • Make eligible donations under 80G

Proper planning can significantly reduce tax liability.


3๏ธโƒฃ TDS Deduction & Deposit Review

Before closing the year:

  • Ensure TDS deducted on all applicable payments
  • Verify contractor, professional, rent, commission payments
  • Deposit TDS within due date

Failure may lead to:

  • 40% disallowance of expense
  • Interest & penalty

Important for Old TDS Returns:

In view of Section 397(3)(f) of Income Tax Act, 2025, correction statements for FY 2018-19 (Qtr. 4), FY 2019-20 to 2022-23 (Qtr. 1 to Qtr. 4) and FY 2023-24 (Qtr. 1 to Qtr. 3) shall be accepted only up-to 31st March 2026. The same are time barred by limitation on 31.03.2026 and would not be accepted from 01.04.2026 onwards. Deductors,Collectors and other Stakeholders may kindly take note. Clickย hereย to view details


4๏ธโƒฃ TCS Compliance Review

If liable to collect TCS:

  • Verify TCS collected properly
  • Deposit pending amounts
  • Reconcile with books

Important as new TCS rates apply from 1 April 2026.


5๏ธโƒฃ Capital Gain Planning

Before year-end:

  • Plan sale of shares/property
  • Book capital losses (tax harvesting)
  • Invest in 54, 54F, 54EC bonds
  • Deposit in Capital Gain Account Scheme if required

This can help legally reduce capital gains tax.


6๏ธโƒฃ MSME Payment Compliance (Section 43B(h))

For businesses:

  • Ensure MSME dues paid within 45 days
  • Otherwise expense will be disallowed in FY 2025-26

Very important for traders and manufacturers.


7๏ธโƒฃ Close Books & Reconcile Accounts

Before 31 March:

  • Bank reconciliation
  • Debtors/creditors confirmation
  • Physical stock verification
  • Cash verification
  • Loan reconciliation

This reduces audit and scrutiny risk.


8๏ธโƒฃ Study Income Tax Act 2025 (Applicable from 1 April 2026)

From next financial year:

  • Income-tax Act 2025 will apply
  • New Rules 2026 will be notified
  • Forms renumbered and simplified

Professionals must:

  • Map old vs new provisions
  • Update compliance checklists
  • Educate clients
  • Update systems & software

Preparation in March avoids confusion in April.

Visit www.cagurujiclasses.com for our detailed Income Tax Course


๐Ÿ”ต PART B โ€“ GST TASKS BEFORE 31 MARCH 2026


9๏ธโƒฃ Opt In / Opt Out of Composition Scheme

If eligible:

  • File intimation before 31 March
  • Check turnover limits
  • Ensure compliance for FY 2026-27

Decision must be taken before start of next FY.


๐Ÿ”Ÿ File LUT for FY 2026-27

Exporters must:

  • File new LUT before 1 April 2026
  • Verify IEC details
  • Update DSC

Without LUT, export may attract IGST payment.


1๏ธโƒฃ1๏ธโƒฃ QRMP Scheme Option

Taxpayers with turnover up to โ‚น5 crore:

  • Opt in or opt out of QRMP
  • Must choose before 30 April (but plan before 31 March)

Turnover review is essential.


1๏ธโƒฃ2๏ธโƒฃ GTA Opt In / Opt Out (FCM vs RCM)

Goods Transport Agency must:

  • File Annexure V or Annexure VI
  • Decide between Forward Charge or Reverse Charge

Option must be exercised within prescribed timeline.


1๏ธโƒฃ3๏ธโƒฃ Hotels โ€“ Declare Specified Premises

Hotels must:

  • File Annexure VII
  • Declare specified premises for rate determination

This impacts GST rate for next financial year.


1๏ธโƒฃ4๏ธโƒฃ GST ITC Reconciliation

Before year-end:

  • Reconcile books vs GSTR-2B
  • Match GSTR-1 with 3B
  • Reverse ineligible ITC
  • Follow up with vendors

March is ideal time to clean mismatches.


1๏ธโƒฃ5๏ธโƒฃ RCM Liability Review

Check whether:

  • GTA services
  • Legal services
  • Director remuneration
  • Other notified services

RCM properly paid and reported in 3B.


1๏ธโƒฃ6๏ธโƒฃ E-Invoicing Threshold Check

If turnover crossed threshold:

  • Ensure e-invoicing started from 1 April
  • Update ERP
  • Generate IRN properly

Non-compliance attracts heavy penalties.


1๏ธโƒฃ7๏ธโƒฃ Turnover Review for Next FY

Check aggregate turnover:

  • Crossed โ‚น1.5 crore? Composition not allowed
  • Crossed โ‚น5 crore? QRMP not allowed
  • Crossed audit limits? Audit applicable

Year-end review helps proper planning.


1๏ธโƒฃ8๏ธโƒฃ Update GST Registration Details

Before year-end:

  • Update bank details
  • Address changes
  • Additional place of business
  • Authorized signatory

Avoid future notices.


1๏ธโƒฃ9๏ธโƒฃ Check Refund Position (If Exporter)

  • File pending refund claims
  • Review inverted duty structure claims
  • Ensure documentation ready

2๏ธโƒฃ0๏ธโƒฃ Clean Compliance Records

Before year closes:

  • File pending returns
  • Clear late fees
  • Respond to notices
  • Maintain proper documentation

Clean compliance record reduces risk under new regime.


31st March 2026 is not just financial year end โ€” it is:

โœ” Last date for tax planning
โœ” Decision date for GST options
โœ” Compliance correction opportunity
โœ” Preparation time for Income Tax Act 2025

If these steps are ignored, it may result in:

  • Higher tax
  • Interest & penalties
  • Loss of benefits
  • Compliance burden in next year

Visit www.cagurujiclasses.com for practical courses

Pooja Gupta

CA Pooja Gupta (CA, ISA, M.com) having 15 years of experience. Educator and Digital Creator

Disclaimer:- The opinions presented are exclusively those of the author and CA Guruji Classes. The material in this piece is intended purely for informational purposes and for individual, non-commercial consumption. It does not constitute expert guidance or an endorsement by any organization. The author, the organization, and its associates are not liable for any form of loss or harm resulting from the information in this article, nor for any decisions made based on it. Furthermore, no segment of this article or newsletter should be employed for any intention unless granted in written form, and we maintain the legal right to address any unauthorized utilization of our article or newsletter.

CA Pooja Gupta (CA, ISA, M.com) having 15 years of experience. Educator and Digital Creator

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