Zoho Books

Zoho Books Setup for GST Compliance: Chart of Accounts, HSN & e-Invoicing Checklist (2026)

Most GST problems in Zoho Books are not filing problems - they are setup problems. If your chart of accounts, GSTIN, HSN/SAC codes and tax rates are configured correctly on day one, monthly GST filing becomes almost automatic. Get the setup wrong, and you spend every quarter fixing mismatched invoices, blocked input tax credit and reconciliation headaches. This accountant-led checklist walks you through configuring Zoho Books for GST the right way - from organisation profile to e-invoicing - so your books stay clean and compliant from the very first invoice.

To set up Zoho Books for GST, configure your organisation and GSTIN, enable GST under Settings > Taxes, set your filing frequency, build a GST-ready chart of accounts, assign correct HSN/SAC codes and tax rates to every item, set place-of-supply defaults, and enable e-invoicing/e-way bills if you cross the thresholds. Doing this correctly upfront makes GSTR-1 and GSTR-3B filing largely automatic.

Step 1: Set Up Your Organisation & GSTIN

Before any GST configuration, your organisation profile must be accurate, because it drives how invoices and returns are generated.

• Legal name & trade name exactly as per your GST registration certificate.
• Registered address & state - the state determines your place of supply for intra vs inter-state tax.
• GSTIN entered correctly; for multi-state operations, add each GSTIN as a separate branch/organisation.
• Financial year & base currency set to India / INR.

Step 2: Enable GST & Choose Registration Type

Go to Settings → Taxes → GST Settings and enable GST. Then configure:

1. Registration type: Regular, Composition, or others - this changes how tax is charged and which returns you file.
2. Filing frequency: monthly, or quarterly under the QRMP scheme. This affects your GSTR-1/3B cadence.
3. Reverse charge (RCM): enable if you deal with notified supplies/services attracting RCM.
4. Connect to GSTN: authorise Zoho Books via OTP so returns can be pushed and GSTR-2B pulled directly.

Step 3: Build a GST-Ready Chart of Accounts

This is the step businesses most often get wrong - and it is the hardest to fix later. A clean chart of accounts keeps your GST liability, input credit and TDS clearly separated and reconcilable.

• Separate output tax ledgers for CGST, SGST and IGST payable.
• Separate input tax credit ledgers for CGST, SGST and IGST so ITC is tracked distinctly.
• Dedicated TDS payable/receivable accounts to keep TDS out of your GST ledgers.
• Income and expense heads structured so taxable, exempt and nil-rated supplies are distinguishable.
• Opening balances imported and reconciled if you are migrating from Tally, Excel or another system.

For businesses moving over from another tool, this is exactly where a structured migration matters. See our Zoho Books implementation service for how we design the chart of accounts and migrate balances cleanly.

Step 4: Configure Tax Rates & HSN/SAC Codes

GST in Zoho Books only works correctly when each item carries the right rate and code. Goods need HSN codes; services need SAC codes.

1. Set up the standard GST rate slabs you use (0%, 5%, 12%, 18%, 28%) - Zoho Books ships with a pre-loaded rate library.
2. Assign the correct HSN/SAC code to every item and service so the right rate applies automatically.
3. Create tax groups where needed (e.g. CGST + SGST for intra-state).
4. Mark items correctly as taxable, exempt, or nil-rated - this directly affects your GSTR-1 classification.

"Nine out of ten GST mismatches we fix trace back to a wrong HSN code or a place-of-supply default set once and never reviewed. Spend an hour on setup; save a day every quarter."

Step 5: Set Place-of-Supply & Invoice Defaults

Place of supply decides whether a transaction attracts CGST+SGST (intra-state) or IGST (inter-state). Configure defaults so your team does not have to decide on every invoice:

• Default place of supply set to your home state, with customer-level overrides for inter-state clients.
• Customer GSTINs captured for all B2B customers so invoices are correctly tagged B2B.
• GST-compliant invoice template showing GSTIN, HSN/SAC, tax breakup and place of supply.

Step 6: Enable e-Invoicing & e-Way Bills (If Applicable)

If your turnover crosses the prevailing e-invoicing threshold, you must generate an IRN for B2B invoices. Zoho Books integrates with the government portals to do this directly.

• e-Invoicing (IRN): enable once liable, so an IRN and signed QR code are generated from each B2B invoice.
• e-Way bills: enable for movement of goods above the value threshold, generated from the invoice.
• Confirm thresholds against current GST rules - these limits change, so verify before enabling.

Step 7: Test Before You Go Live

Before raising real invoices, run a quick validation so you catch configuration errors early:

1. Create one intra-state and one inter-state test invoice and confirm CGST/SGST vs IGST apply correctly.
2. Check the HSN/SAC and rate populate automatically on each line.
3. Generate a draft GSTR-1 and confirm invoices classify into B2B, B2C, exports and exempt correctly.
4. Fetch GSTR-2B and run a sample reconciliation against a purchase bill.

Once these pass, your setup is sound. From here, monthly filing is straightforward - see our step-by-step guide on how to file GST returns on Zoho Books.

Frequently Asked Questions

Written by CA Karan Shah

Founder of KC Shah & Associates. Zoho Books implementation expert and CA providing outsourced accounting services to startups and SMEs across India, with a focus on GST-compliant bookkeeping and real-time financial reporting.