Expert GST Consultancy Services in India | ISLF

Since its introduction in July 2017, India's Goods and Services Tax has unified the indirect tax landscape but introduced a new layer of compliance complexity. Businesses must now file multiple returns each month — GSTR-1 for outward supplies, GSTR-3B for summary and payment, and GSTR-2B reconciliation for input tax credit. For companies engaged in international trade, the compliance burden is even heavier: IGST refunds, LUT filings, e-Way bills, e-invoicing mandates, and the intersection of GST with customs duty require specialist expertise.

Errors in GST filings carry significant consequences. Incorrect ITC claims trigger demands and interest. Missing the LUT filing deadline means paying IGST on exports even when zero-rated status applies. Non-reconciliation between GSTR-2B and purchase registers leads to ITC mismatches and departmental notices. For importers, incorrect classification of IGST paid at customs and its subsequent ITC claim in GSTR-3B can result in both over-payment and compliance exposure.

ISLF's GST consultancy team brings together chartered accountants, tax advocates, and trade compliance specialists who understand the full lifecycle of GST compliance — from registration through to annual return and audit. We serve businesses across Chennai, Tuticorin, Bengaluru, Gujarat, and pan-India, providing both ongoing compliance support and strategic advisory.

ISLF provides GST registration services for all entity types — sole proprietorships, partnerships, LLPs, private and public limited companies, and government bodies. We handle new registrations, amendments (for additional places of business, HSN codes, and authorized signatories), and cancellations. Our team also assists with voluntary registrations for businesses below the threshold but engaging in inter-state supplies or exports.

Our return filing service covers the complete GST return calendar: GSTR-1 (monthly/quarterly outward supply data), GSTR-3B (monthly summary and tax payment), GSTR-2B matching and ITC reconciliation, GSTR-9 annual return, GSTR-9C reconciliation statement, and specialized returns like GSTR-7 (TDS) and GSTR-8 (TCS). We maintain a rigorous filing calendar and send clients reminders well before due dates to avoid late fees and interest.

For exporters, ISLF provides critical support for IGST refund claims — whether through the shipping bill-linked automatic refund route or the manual application on the GST portal. We also assist with LUT (Letter of Undertaking) filing at the beginning of each financial year, enabling zero-rated exports without payment of IGST. Our team handles end-to-end IGST refund follow-up with the jurisdictional GST office to ensure timely credit.

Beyond routine compliance, ISLF's GST advisory team helps businesses structure their operations to maximize ITC efficiency, minimize GST liability, and ensure export incentive optimization. We provide written opinions on complex issues such as place of supply for cross-border services, valuation of related-party transactions, GST implications of free samples and discounts, and the applicability of reverse charge mechanism (RCM) on various procurement categories.

When businesses receive GST notices — show cause notices, audit queries, or assessment orders — ISLF's litigation support team prepares comprehensive replies backed by case law, advance rulings, and CBIC circulars. We represent clients before GST officers, GST Appellate Authority, and the GST Appellate Tribunal for cases involving refund rejections, demand orders, and classification disputes.

ISLF's proactive compliance approach means we monitor CBIC notifications and GST council decisions and communicate relevant changes to clients immediately. From the introduction of e-invoicing to changes in e-Way bill rules or new HSN code mandates, ISLF ensures your business stays current and audit-ready at all times.