Automated GST Reconciliation and ITC Matching

What This Service Does

Automated GST reconciliation synchronises your internal purchase invoices with the GSTR-2B statement issued by the GST portal on the 14th of each month. GSTR-2B is auto-drafted from supplier filings and is legally your ceiling for ITC claims under Section 16(2)(aa) of the CGST Act. The system matches records on GSTIN, invoice number, and taxable value, tolerates minor rounding differences, and sorts results into four categories: matched, amount mismatches, only-in-GSTR-2B, and only-in-your-books. Any gap represents either claimed ITC you cannot defend or eligible credit you are missing.

Why This Matters for Your Cash Flow

ITC mismatches are not reconciliation errors—they are blocked working capital. When GSTR-2B shows ₹2.1 lakh in GST credit but your purchase register claims ₹3.2 lakh, that ₹1.1 lakh gap sits in a legal grey zone. If you claim the extra amount, the GST system auto-generates a DRC-01C notice requiring you to respond within seven days under Rule 88D. Excess ITC claims incur interest at 18% per annum from the filing date, and penalties range from ₹10,000 upward. Even partial mismatches trigger audits because tax authorities now use automated data analytics to flag discrepancies.

Conversely, invoices that are in GSTR-2B but missing from your books represent ITC you have not claimed. Suppliers sometimes file late, upload under incorrect GSTINs, or use wrong invoice numbers. Without active matching, you miss eligible credit and tie up cash unnecessarily. Unreconciled ITC of ₹5 lakh means ₹5 lakh less available for operations.

What Is Included

• Monthly GSTR-2B fetch and parse—API-driven download from GST portal after the 14th; handles JSON, Excel, and PDF formats.
• Intelligent invoice matching—Cross-reference purchase register against GSTR-2B on GSTIN and invoice number; amount tolerance for tax rounding.
• Four-bucket categorisation—Matched invoices, amount mismatches, invoices only in GSTR-2B, invoices only in purchase books.
• High-value flagging—Prioritises mismatches by ITC amount so your team focuses on ₹1 lakh+ gaps first.
• Vendor pattern scoring—Identifies suppliers with recurring late filings or incorrect data so procurement can address root causes.
• Audit trail and approval workflow—Tracks all matches, rejections, and manual overrides; documents vendor communication history.
• GSTR-3B readiness check—Validates that ITC claimed in your draft GSTR-3B does not exceed eligible GSTR-2B data before filing.
• Compliance report generation—Excel exports with matched/unmatched detail, vendor summaries, and discrepancy explanations.

How It Works

1. Audit (Week 1)

We review your current purchase-to-GSTR-2B process. Are you using Excel, Tally, accounting software, or manual spot-checks? Do you know which invoices are repeatedly missed? We map the data sources, test API connectivity to the GST portal, and identify which systems hold ground truth for your purchase data.

2. Process Design (Week 1–2)

We define your reconciliation workflow: which data fields to match, tolerance thresholds for amount variations (typically 0–5% for rounding), decision rules for disputed invoices, and approval ownership. We create templates for vendor follow-up when invoices are missing from GSTR-2B, and establish monthly filing deadlines so GSTR-3B is filed before the 19th of the month.

3. Build and Integration (Week 2–3)

The system connects to your accounting software (Tally, SAP, QuickBooks) or API endpoints, pulls your purchase ledger daily or on-demand, fetches GSTR-2B from the GST portal on the 14th, and runs matching against a configurable ruleset. Results populate a dashboard showing matched invoices, exceptions by vendor, and monetary impact of mismatches.

4. Run and Monitor (Ongoing)

Each month, the system automatically downloads GSTR-2B, reconciles against your books, and alerts your finance team when mismatches exceed configurable thresholds. You no longer download files, copy-paste into Excel, or scroll through invoices manually. The system sends alerts to email or Slack when a high-value mismatch appears, so you can contact vendors before the GSTR-3B filing deadline.

5. Support and Tuning (Ongoing)

We monitor match quality, investigate false positives or missed invoices, retrain the matching algorithm if GST filing rules change, and adjust tolerance thresholds based on your business patterns. Quarterly reviews ensure the system is still catching the right mismatches and that your team is acting on alerts in time.

What You Provide

• Access to your GST portal login (or we handle API credentials securely).
• Connection details for your accounting system (Tally, ERP, or export of monthly purchase register).
• Name and GSTIN of the legal entity to reconcile.
• Tax period start date (usually 1st of calendar month, or as per your GST return cycle).
• Names and contact details of one or two staff members who will review mismatches and approve resolutions.

Typical Timeline

Once live, the system runs automatically each month. Review and action on mismatches typically take 2–4 hours per period, depending on mismatch volume and vendor responsiveness.

What Is Not Covered

• Eligibility assessment. The system flags mismatches but does not audit whether ITC itself is legally eligible under Section 16 of the CGST Act (e.g., reverse-charge mechanism, ineligible input categories, place-of-supply rules). Your CA or tax team must validate eligibility independently.
• Amendment filing. If a vendor has filed an incorrect invoice in GSTR-1, the system alerts you but does not file an amendment on the vendor's behalf. You must contact the vendor to file a credit note or amendment.
• Supplier communication. The system generates communication templates and tracks vendor responses, but you own vendor follow-up. We do not negotiate directly with suppliers.
• DRC-01C responses. If a notice arrives despite reconciliation, our team can help you prepare a response but does not represent you before tax authorities.
• Year-end GSTR-9 reconciliation. This service focuses on monthly GSTR-2B matching. Annual GSTR-9 (annual return) reconciliation is typically a separate engagement.
• Import data (ICEGATE). Reconciliation of import invoices via Bills of Entry requires separate configuration and is available on request.

Compliance and Legal Basis

This service operates within Section 16(2)(aa) of the CGST Act, 2017, which mandates that registered persons can claim ITC only for invoices appearing in GSTR-2B (in effect from 1 January 2022). Rule 36(4) of the CGST Rules previously allowed a 5–20% cap on unreflected ITC; that cap has been superseded by 100% GSTR-2B matching. The system produces records compliant with Rule 88 (GST audit procedures) and helps you respond to DRC-01C intimations within the seven-day window if mismatches breach system thresholds.