April 2026 Compliance Calendar: Start the New Financial Year Right

It is the 1st of April 2026. A brand new financial year has just begun. For thousands of small business owners, startups, and MSMEs across India, the first month is also the most compliance-dense. The April 2026 compliance calendar covers obligations across GST, Income Tax, TDS, PF, ESIC, and ROC, all converging in a single thirty-day window. Your GST portal needs attention, your TDS challan from March is still pending, and GSTR-1 for March must be filed by the 11th.

In this guide, we cover every critical tax due date in April 2026, categorised by compliance type, with penalties for default and expert guidance on how to approach the new financial year. Furthermore, this is the right time to review your salary structure, GST registration status, and TDS computation methodology before FY 2026-27 builds momentum.

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• ▸  GSTR-1, GSTR-3B, TDS, PF & ESIC filed on time, every month
• ▸  GSTR-2B reconciliation and ITC maximisation every month
• ▸  TDS on salary computed, deposited, and Form 24Q filed quarterly
• ▸  GST, Income Tax and labour law notices handled by compliance experts

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Why the April 2026 Compliance Calendar Is the Most Critical Month of the Year

April 2026 Marks the Start of FY 2026-27 and the Close of FY 2025-26

Two Financial Years Overlap Simultaneously

April is the only month in the Indian compliance calendar where two financial years overlap at the same time. On one side, March 2025-26 obligations, including the final TDS deposit, the last GSTR-1 of the previous year, and outstanding PF challans, all fall due in April. On the other side, the first cycle of FY 2026-27 begins immediately, with new GST return periods opening, updated TDS slab applicability, and fresh payroll cycles starting.

What Happens When Businesses Are Unprepared

Consequently, a business that approaches April 2026 without a clear compliance plan is simultaneously at risk of two sets of defaults. Specifically, missing a March TDS deposit by the extended April 30th deadline triggers interest under Section 201 of the Income Tax Act. At the same time, failing to file GSTR-1 for March by April 11th creates an ITC gap for all buyers who received invoices in March. Therefore, the April 2026 compliance calendar demands systematic execution rather than reactive management.

FY 2026-27 Brings Updated Compliance Applicability for Many Businesses

GST Thresholds and QRMP Eligibility Must Be Re-Evaluated

The start of a new financial year also triggers a reassessment of compliance thresholds. Businesses that crossed the GST annual turnover threshold in FY 2025-26 must now comply with the HSN code reporting requirement at the 6-digit level. Similarly, businesses that moved above the QRMP eligibility threshold must now file GSTR-1 and GSTR-3B monthly. In addition, PF and ESIC applicability must be re-evaluated if headcount thresholds were crossed during the year.

Why April Is the Legally Required Time to Act

As a result, April 2026 is the correct time, and often the legally required time, to review and update your compliance obligations across every statutory framework. Businesses that delay this review beyond April typically discover mid-year that they have been filing under the wrong scheme or at the wrong frequency. Rectifying such errors retrospectively is both time-consuming and costly. Therefore, acting in April avoids a cascade of avoidable penalties in the months that follow.

Apr 30 TDS Deposit Deadline for March 2026

6 Returns Due in April 2026 Across GST, TDS & Labour

500+ SMEs Managed by Futurex Across India

April 2026 Compliance Calendar: Complete Due Date Table

The table below is your master tax compliance calendar for April 2026. It covers all major due dates across GST, Income Tax, TDS/TCS, Provident Fund, ESIC, and ROC, along with applicable taxpayer categories and penalties for non-compliance.

GST Compliance in April 2026: What Every Small Business Must Know

GSTR-1 for March 2026 Is the Last Return of the Previous Financial Year

Why GSTR-1 Must Be Filed Before Any Other April Return

The GSTR-1 due on April 11th covers all outward supplies made in March 2026. This is the final invoice-level return of FY 2025-26. Consequently, any invoice from March that is not uploaded by April 11th will not appear in your buyer’s GSTR-2B for March, thereby denying them input tax credit for a transaction they have already paid for. Furthermore, this creates immediate friction with customers and can damage business relationships that take months to repair. Therefore, GSTR-1 must always be given priority over all other April filings.

The Downstream Impact on Your Buyers

It is worth understanding that late GSTR-1 filing does not only attract a penalty for your business. In addition, it forces your buyers to either forgo ITC for that month or reverse ITC already claimed, creating a financial burden on their end as well. Over time, this erodes trust with GST-registered customers who depend on your timely filing. As a result, disciplined GSTR-1 filing is both a compliance obligation and a critical component of healthy B2B relationships.

GSTR-2B Reconciliation for March 2026: Do It Before Filing GSTR-3B

Why March GSTR-2B Has More Entries Than Other Months

March is typically a high-volume purchase month for most businesses. As a result, the GSTR-2B statement for March 2026 contains more entries than most other months. Before filing GSTR-3B on April 20th, reconcile your purchase register against GSTR-2B line by line. Any ITC claimed in GSTR-3B that is not reflected in GSTR-2B will create a system-flagged discrepancy, one that frequently generates a Section 73 demand notice months later.

The Cash Flow Risk of Skipping Reconciliation

Moreover, failing to claim ITC that is genuinely available in GSTR-2B means paying cash tax unnecessarily, which is a direct working capital drain at the very start of the new year. In many cases, businesses that skip reconciliation end up overclaiming ITC in one month and underclaiming in another, resulting in compounding mismatches across the annual GSTR-9. Therefore, a structured GSTR-2B reconciliation process in April is the single most effective step a business can take to protect both its compliance record and its cash position.

Annual GST Return GSTR-9: Preparation Should Begin in April Itself

While GSTR-9 for FY 2025-26 is not due until December 31, 2026, the data required to complete it accurately must be compiled from monthly filings made throughout FY 2025-26. Starting the reconciliation process in April, while the transactions are still fresh, dramatically reduces the effort required at year end. Additionally, businesses with turnover above ₹5 crore must also file GSTR-9C, which requires cross-referencing GST data with audited financial statements. The earlier this process begins, the fewer corrections are required at the time of actual filing.

TDS Compliance in April 2026: Key Deadlines and Common Errors

The April 30th TDS Deadline Is Not the Standard Monthly Deadline

Understanding the March Exception Clearly

This distinction is widely misunderstood among small business owners. The standard TDS deposit deadline for any given month is the 7th of the following month. April 30th is a one-time exception, applicable only to TDS and TCS deducted during March 2026. This exception exists to give employers additional time to process the year-end payroll, compute final TDS on salary, and deposit the balance. For every other month starting May 2026, the standard 7th deadline resumes without exception.

Why Carrying This Habit Into FY 2026-27 Is a Serious Error

Many businesses make the mistake of treating April 30th as a permanent monthly norm. Consequently, they deposit TDS for April 2026 by May 30th instead of May 7th, triggering interest from May 8th. Over the course of FY 2026-27, this single misunderstanding can result in interest liabilities for every month of the year. Therefore, it is essential to communicate this distinction to your accountant or payroll team at the very start of the new financial year.

Q4 FY 2025-26 TDS Return: Form 24Q and 26Q Due May 31st

Why Planning for This Return Must Begin in April

While the TDS deposit for March is due in April, the Q4 TDS return, including Form 24Q for salary TDS and Form 26Q for non-salary TDS, is due on May 31, 2026. Although this is not strictly an April deadline, planning for it must begin in April itself. The Q4 return requires reconciling all four quarters of TDS data, verifying PAN details of deductees, and ensuring that challan numbers match the department’s records. Errors in the Q4 return affect every employee’s Form 26AS, the tax credit statement visible when employees file their own income tax returns. Therefore, data preparation for Form 24Q should begin in April, even though the filing deadline falls in May.

TDS on Property Purchase and Rent: April Deadlines Apply

Businesses that made property purchase payments or paid rent above the specified threshold in March 2026 must deposit TDS under Section 194-IA and 194-IB respectively, via challan-cum-statement Form 26QB or 26QC, by April 30th. These are separate from standard TDS challans and must be filed independently on the income tax portal. Missing these deadlines attracts both late filing fees under Section 234E and interest under Section 201, on top of the risk of the seller’s Form 26AS reflecting a discrepancy.

5 April 2026 Compliance Mistakes Small Businesses Commonly Make

Mistake 1: Treating April 30th as the Standard Monthly TDS Deadline

This is the most common and costly error in April 2026 tax compliance. Many business owners, and some accountants, carry the April 30th extended deadline forward as a habit, assuming TDS for April 2026 is also due on May 30th. It is not. TDS deducted in April 2026 is due by May 7th, and filing even one day late triggers interest from May 8th plus a penalty notice from the Income Tax Department’s automated system. Consequently, the April 30th deadline must be understood and communicated as a one-time exception for March deductions only.

Mistake 2: Not Updating TDS Rates and Slabs for FY 2026-27

With the new financial year beginning on April 1st, TDS deduction rates and income tax slab applicability are reset entirely. Businesses that continue using the previous year’s TDS computation without updating the applicable regime, revised surcharge rates, or the latest Budget 2026 amendments will deduct incorrect TDS from the very first payroll of the new year. Over time, this creates a cascading error across twelve months of Form 24Q filings and generates discrepancies in employees’ Form 16 at year end. Therefore, updating your payroll and TDS computation setup at the start of April is mandatory rather than optional.

Mistake 3: Skipping GSTR-2B Reconciliation for March 2026

March is typically the month with the highest volume of year-end purchases, prepaid expenses, and advance payments. Consequently, GSTR-2B for March 2026 contains entries from suppliers who may have filed their GSTR-1 at the last minute. Several businesses file GSTR-3B on April 20th without checking GSTR-2B carefully, either claiming ITC that has not yet been uploaded by suppliers, or missing credits that are genuinely available. One outcome triggers a system mismatch notice, while the other drains working capital unnecessarily at the start of a new financial year.

Mistake 4: Missing the PF Deadline During Payroll Transition

April is frequently a month of payroll changes, including salary revisions, new hires joining after the March financial year review, and departing employees being settled. These transitions create complexity in the PF contribution computation. Many employers, especially those managing payroll in-house, delay finalising the March salary register while processing revisions, thereby causing the PF challan to miss the April 15th deadline. EPFO interest begins accruing from the 16th. Furthermore, employees can check their PF balance on the UMANG app in real time, making delayed deposits immediately visible to your team.

Mistake 5: Not Reviewing GST Registration and QRMP Status at Year Start

QRMP scheme eligibility is determined by the aggregate annual turnover in the preceding financial year. Businesses that crossed the ₹5 crore threshold in FY 2025-26 must now file GSTR-1 and GSTR-3B monthly in FY 2026-27 rather than quarterly. Filing quarterly when monthly filing is required creates automatic mismatches in the department’s system and can trigger scrutiny. In addition, businesses newly required to register under GST must apply before commencing taxable supplies in the new year. April 2026 is therefore the correct time to verify and update all GST registration and scheme elections.

Starting FY 2026-27 Right: What to Review and Set Up in April 2026

Review Your Salary Structure Before the First April Payroll

Why the First Payroll of FY 2026-27 Sets the Annual Baseline

The first payroll run of FY 2026-27 sets the TDS computation baseline for the entire year. If the salary structure, including HRA, special allowance, PF-applicable wage, and standard deduction, is not reviewed and updated in April, the errors compound across all twelve months of Form 24Q filings. Additionally, employees must submit their tax regime declaration at the start of the year. In the absence of a declaration, the default new tax regime applies, which may not be optimal for all employees.

What Must Be Collected Before the Payroll Is Processed

Therefore, salary structure review, regime selection, and investment declaration collection must all be completed before the April payroll is processed. Furthermore, any salary revisions effective from April 1st must be incorporated into the payroll setup before the first run, rather than adjusted retrospectively in subsequent months. Retrospective corrections in TDS computation create reconciliation challenges that persist through the annual Form 16 issuance in June.

Reconcile All FY 2025-26 Liabilities Before Filing April Returns

Why Prior Year Liabilities Block Current Year Filings

Before filing any April 2026 GST or TDS return, confirm that all FY 2025-26 liabilities are settled. Outstanding GST interest, unclaimed ITC adjustments, or unpaid TDS for February or March must be addressed before the April returns create a new set of open items. If any FY 2025-26 GST return is still unfiled, the April 2026 GSTR-3B cannot be submitted until the backlog is cleared. Consequently, the first week of April should be used to audit and close all pending FY 2025-26 compliance items.

The Risk of Carrying Forward Unresolved Items

Businesses that enter April with unresolved prior-year liabilities face a compounding problem. On one hand, they must resolve old defaults while simultaneously meeting new April deadlines. On the other hand, interest on pending liabilities continues to accrue daily throughout this period. Moreover, unresolved GSTR mismatches from FY 2025-26 can trigger automated scrutiny notices in Q1 of FY 2026-27, further distracting management attention from current operations. Therefore, a clean year-end close is not merely desirable but operationally necessary.

GST and Payroll Compliance Cannot Be Managed in Isolation

For businesses with employees, the GST and payroll compliance obligations in April 2026 are deeply interconnected. Director fees, contractor payments, and reimbursements that carry both TDS and GST implications must be classified correctly from the first month of the new year. Managing these through separate teams or disconnected systems creates classification inconsistencies that attract scrutiny from both the Income Tax Department and GST officers. A single outsourced partner covering both functions, as part of an integrated outsourced accounting for small business engagement, ensures consistent treatment and clean records from April 1st onwards.

Similarly, the first month of the new year is the right time to evaluate whether your current payroll management and accounting and bookkeeping infrastructure can handle the compliance volume of FY 2026-27. Businesses that grew significantly in FY 2025-26, in headcount, in turnover, or in transaction complexity, often find that their in-house setup is no longer adequate. Addressing this in April avoids the mid-year scramble that typically results in deferred filings, missed reconciliations, and avoidable penalties.

Conclusion: The April 2026 Compliance Calendar Sets the Tone for the Entire Financial Year

The April 2026 compliance calendar is not simply a list of due dates. Rather, it is a test of whether your business has the systems, processes, and expertise to manage statutory obligations at the volume that Indian tax law demands. A clean April, with GSTR-1 filed on the 11th, GSTR-3B filed on the 20th, TDS deposited by the 30th, and PF cleared by the 15th, creates a momentum that carries through the entire year. Conversely, a missed deadline in April creates a backlog that compounds with every subsequent month.

Small businesses that invest in properly managed tax compliance, whether through an outsourced specialist or a well-structured internal team, consistently find that doing it right costs far less than fixing accumulated errors. Consequently, the decision to outsource accounting for small business, covering GST return filing, TDS, payroll, bookkeeping, and compliance calendar management, is simultaneously a cost decision and a risk management decision.

Futurex Management Solutions has helped hundreds of small businesses, startups, and MSMEs across India navigate each financial year with zero missed deadlines. If you want FY 2026-27 to be your most compliant year yet, the right time to start is now.

Frequently Asked Questions About the April 2026 Compliance Calendar