The beginning of the new financial year FY 2026–27 marks a crucial phase for businesses, professionals, and taxpayers. April is not just about meeting deadlines—it is about closing the previous year accurately and setting a strong foundation for the new one. Proper compliance during this month ensures smooth operations, avoids penalties, and builds long-term financial discipline.

Key Compliance Dates – April 2026

➤ 7th April 2026 – TCS Payment for March 2026

Tax Collected at Source (TCS) must be deposited by businesses that have collected tax while receiving payments from customers. This is important because the government monitors high-value transactions through TCS, and any delay in payment attracts interest and penalties. Businesses should carefully reconcile their March collections, ensure correct calculation, and deposit the amount within the due date to avoid compliance issues.

➤ 9th April 2026 – Setup Online Accounting Software for FY 2026–27

The start of a new financial year is the best time to set up or upgrade accounting systems. This process includes migrating previous data, creating ledgers, defining chart of accounts, and configuring GST settings. A properly set up system ensures that financial records remain clean and structured throughout the year. It also helps in real-time tracking of income, expenses, and tax liabilities, reducing the chances of errors during filings.

➤ 10th April 2026 – Income Tax e-Filing Begins (AY 2026–27)

With the start of income tax filing for FY 2025–26, taxpayers get an opportunity to file returns early. Early filing is beneficial because it ensures faster refunds, reduces last-minute pressure, and minimizes the risk of errors. Taxpayers should gather all relevant documents such as Form 16, bank statements, and investment proofs, and reconcile them with official data before filing to ensure accuracy.

➤ 10th April 2026 – Professional Tax (PT) on Salaries

Professional Tax is a state-level tax deducted from employee salaries and must be deposited by employers within the prescribed timelines. Since due dates and rules vary across states, businesses must stay updated with local regulations. Timely payment is essential to avoid penalties and maintain compliance with state authorities.

➤ 11th April 2026 – GSTR-1 (Monthly)

GSTR-1 is a crucial GST return that captures details of outward supplies (sales). Filing this return accurately ensures that buyers can claim Input Tax Credit (ITC) without any issues. Any mismatch or incorrect reporting can lead to disputes, ITC blockage, and compliance notices. Businesses should reconcile invoices with their accounting records before submission.

➤ 13th April 2026 – GSTR-1 (QRMP Scheme)

Taxpayers registered under the QRMP scheme are required to file GSTR-1 quarterly. This filing includes consolidated sales data for January to March 2026. Accuracy is critical here, as errors can affect the entire quarter’s GST compliance and may lead to reconciliation challenges later.

➤ 15th April 2026 – PF & ESI Payment for March 2026

Provident Fund (PF) and Employee State Insurance (ESI) contributions are mandatory for employers. These payments ensure employee welfare and social security benefits. Delayed or incorrect payments can lead to heavy penalties and legal consequences. Employers must calculate contributions correctly and deposit them on time to remain compliant.

➤ 15th April 2026 – Start of CCFS 2026 Scheme

The introduction of compliance schemes like CCFS provides businesses, especially Private Limited Companies and OPCs, an opportunity to streamline their compliance processes. These schemes are designed to reduce litigation risks, improve transparency, and encourage timely filing of returns and disclosures.

➤ 18th April 2026 – CMP-08 (Composition Scheme)

Composition taxpayers are required to file CMP-08 for quarterly tax payment. This simplified scheme allows small businesses to pay tax at a fixed rate, but timely filing is essential. Any delay results in interest and penalties, making it important to calculate turnover accurately and pay the tax within the due date.

➤ 20th April 2026 – GSTR-3B (Monthly)

GSTR-3B is a summary return where businesses declare their tax liability and claim Input Tax Credit. This is one of the most critical GST filings because it directly impacts tax payment. Errors in this return can lead to notices, interest liabilities, and reconciliation issues. Businesses must match their data with GSTR-1 and GSTR-2B before filing.

➤ 22nd & 24th April 2026 – GSTR-3B (Quarterly – QRMP)

Quarterly filers under the QRMP scheme must file GSTR-3B based on their region. The staggered due dates (22nd for South India and 24th for North India) are designed to manage portal load. Timely filing ensures compliance and avoids penalties.

➤ 30th April 2026 – GST QRMP Opt-in / Opt-out

Businesses must decide whether to continue with the quarterly filing scheme or switch to monthly filing for the next quarter. This decision impacts compliance workload, cash flow, and reporting frequency. Proper evaluation of turnover and operational needs is essential before choosing.

➤ 30th April 2026 – TDS Payments (Various Forms)

TDS payments must be made for various transactions such as property purchase, rent, contractor payments, and crypto transactions. These are reported through forms like 26QB, 26QC, 26QD, and 26QE. Timely deduction and deposit of TDS are crucial, as non-compliance leads to interest, penalties, and disallowance of expenses.

➤ 30th April 2026 – TDS Payment for March 2026

Apart from specific forms, regular TDS deducted during March must also be deposited. This ensures proper reporting in government records and avoids compliance issues during return filing.

➤ 30th April 2026 – GSTR-4 (Annual)

Composition taxpayers must file GSTR-4 annually to summarize their turnover and tax paid for the entire financial year. This filing is essential to close GST records and maintain compliance for FY 2025–26.

Why April Compliance is Critical

April acts as a bridge between two financial years. Any errors, mismatches, or missed filings during this month can carry forward and create complications in audits, assessments, and future compliance. Proper handling of April ensures accurate books, smooth GST flow, and better financial planning.

Smart Compliance Strategy for April 2026

A practical approach to April compliance includes starting early, maintaining proper documentation, reconciling financial data, and using automated systems. Businesses should prioritize high-risk filings like GST, TDS, and employee-related compliances. Choosing the right GST scheme and working with experts further reduces risks and improves efficiency.

How WiseBooks Helps

WiseBooks provides end-to-end support in GST, Income Tax, TDS, and bookkeeping. With automated systems, timely reminders, and expert advisory, businesses can focus on growth while ensuring full compliance.

Final Thoughts

April is not just the beginning of a financial year—it is the foundation of your financial discipline and compliance structure. A well-managed April leads to fewer errors, better planning, and long-term business success.