A Practical GST Compliance Checklist for Small Businesses

GST compliance rarely fails in one dramatic moment. It fails gradually: an invoice missing the customer's GSTIN, a supplier who never uploads their invoices, a return filed a few days late each month. Individually small, together they lead to blocked credits, interest, notices and cash-flow strain.

Here is a practical checklist we use with small and growing businesses.

Registration and set-up

• Confirm whether registration is required. It depends on turnover and on the nature of your supplies; some businesses must register regardless of turnover, such as those making inter-state supplies of goods or selling through certain e-commerce platforms.
• Keep registration details current. New branches, warehouses, partners or business activities must be added through an amendment.
• Choose the right return frequency. Eligible small taxpayers can opt for quarterly returns with monthly tax payments.
• Display your GSTIN at your place of business and on your invoices.

Every invoice

• Correct GSTIN of both supplier and recipient (for B2B supplies)
• Sequential invoice numbering, unique for the financial year
• HSN/SAC codes as applicable to your turnover
• Correct tax type: CGST + SGST for intra-state, IGST for inter-state supplies
• Place of supply stated correctly
• Check whether e-invoicing and e-way bills apply to you

Every month (or quarter)

1. Reconcile your sales register with what you report in your outward supply return.
2. Match input tax credit with the auto-generated statement of supplier invoices before claiming it. Credit generally cannot be claimed for invoices your supplier hasn't reported.
3. Follow up with non-compliant suppliers quickly; delays block your credit.
4. Review reverse-charge transactions (for example, certain services from unregistered persons or import of services) and pay tax on them.
5. File returns and pay tax on time. Late filing attracts late fees and interest, and can block your customers' credit.

Every year

• File the annual return and, where applicable, the reconciliation statement.
• Reconcile GST turnover with your books and income-tax return.
• Review credits reversed or blocked during the year.
• Preserve records (invoices, credit notes, e-way bills and returns) for the statutory retention period.

Warning signs to act on

• Credit in your books is higher than credit shown on the portal
• Repeated notices about mismatches
• A large supplier who hasn't filed returns for months
• Cash locked up in unutilised credit (you may be eligible for a refund)

How Advest can help

We handle GST registration, monthly filing, reconciliations, annual returns, refunds and notice replies, so you can focus on running the business. See our taxation services.

This article is general information, not professional advice. GST rules and thresholds change; please consult us about your specific situation.