GST Reconciliation Automation
Match your books to GSTR-2B without a month-end spreadsheet marathon.
We build reconciliation software that matches your purchase register with GSTR-2B and supplier filings, flags mismatches by reason, tracks follow-up with suppliers and gives finance a clear view of input tax credit at risk.
- GSTR-2B matching
- Mismatch reasons
- Supplier follow-up
Free 30-minute call with a senior specialist. Reply within one business day. Based in Jaipur, working with businesses across India.
- Discovery callFree 30 minutes with a senior specialist
- Scoped first phaseWritten scope, timeline and fixed price
- Build with weekly demosWorking software you can see every week
- Launch and supportGo-live with your team ready, then ongoing support
What is GST reconciliation automation?
GST reconciliation automation compares your purchase register with the supplier-reported data in GSTR-2B, matches invoices automatically, classifies mismatches such as missing invoices, value differences and GSTIN errors, and tracks follow-up. Stack18 builds it with your ERP or Tally data and keeps final filing decisions with your accountant.
Last reviewed 30 October 2026 by the Stack18 delivery team in Jaipur. Security and AI governance · Pricing · About Stack18
| What it covers | Data intake; Matching engine; Exceptions and follow-up; ITC visibility; Audit trail. |
|---|---|
| Typical first step | Discovery Sprint: 2 weeks, fixed price. |
| Build route | Fixed-scope first release: agreed in discovery; fixed price after discovery. |
| Long-term option | Transformation Pod: 12–36 months, annual contract. |
| Measured by | Reconciliation time; Unmatched invoices at close; ITC at risk; Supplier follow-up time. Each against an agreed baseline. |
| Governance | Human approval at 5 governance gates before anything reaches production. NDA available on request. |
| Delivery team | Based in Jaipur, India. A senior specialist replies within one business day. |
You need this when…
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GST Reconciliation Automation, end to end.
Each capability is delivered by the same team on the Agentic SDLC, with your approval at every critical step.
Data intake
Bring books and portal data together.
- Purchase register from ERP or Tally
- GSTR-2B file import
- Supplier master cleaning
Matching engine
Smart matching, clear reasons.
- Exact and tolerance matching
- Invoice number variant handling
- Mismatch classification
Exceptions and follow-up
Chase suppliers with evidence.
- Exception queue by supplier
- Reminder messages
- Status tracking
ITC visibility
Know what is at risk.
- ITC claimed versus available
- Ageing of unmatched invoices
- Supplier-wise risk
Audit trail
Defend the numbers.
- Match history
- User actions logged
- Month-wise reports
A typical engagement, step by step.
Senior people lead every phase. Specialised AI agents on the Agentic SDLC handle the repetitive work, and nothing ships without your approval.
Discovery
Map how GST reconciliation works today, the systems and data involved, and agree the first measurable outcome.
Design
Design the workflows, roles, integrations and approval points for GST reconciliation.
Build in weekly demos
Your team sees working GST reconciliation software every week, with changes agreed in the open.
Launch and support
Data migration, training, go-live support and a measured 30-day review against the baseline.
Start small. Scale when it works.
Every engagement begins with a short, fixed-price step so you can judge the fit before committing further. See pricing.
Discovery Sprint
Teams deciding scope and priorities before they commit.
- Duration
- 2 weeks
- Pricing
- Fixed price
- Scoped plan and timeline
- Team and fixed price
- Process map or prototype
Fixed-scope first release
Teams that know what they need built.
- Duration
- Agreed in discovery
- Pricing
- Fixed price after discovery
- Written scope and acceptance criteria
- Weekly demos
- Handover with documentation
Transformation Pod
Multi-system programmes that run for years.
- Duration
- 12–36 months
- Pricing
- Annual contract
- Dedicated cross-functional team
- Quarterly business reviews
- One accountable partner
What we have shipped, and what a typical engagement looks like.
Delivered projects link to the full case study. Illustrative scenarios describe typical engagements and are not named client results.
Trading company with many suppliers
- Challenge
- Monthly reconciliation takes days; unmatched invoices chased late.
- What we do
- Automated matching with a supplier exception queue.
Pilot scoped in 2 weeks
Free GST reconciliation review
Tell us where GST reconciliation hurts most. We map what to fix first, whether ready-made or custom fits, and a realistic first step.
- Where to start and why
- Ready-made vs custom view
- Indicative timeline
We agree targets before we start.
Every engagement has a baseline and a target on the measures that matter to you, reported at every read-out.
GST Reconciliation Automation questions.
Does it file returns?
No. It prepares and reconciles data. Filing decisions stay with your accountant.
Which accounting systems can it read?
Tally, ERPs and spreadsheets with usable exports. We confirm yours in discovery.
How accurate is the matching?
We measure on your own data in a pilot and tune tolerances. Uncertain matches always go to a person.
Can it contact suppliers?
It can prepare and send reminders with the list of missing invoices, with your approval.
Is this tax advice?
No. We provide engineering. Your CA should confirm treatment.
Guides, comparisons and proof.
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Read →Let's scope your GST Reconciliation Automation project.
Tell us where you are and where you want to be. A senior specialist will reply within one business day with next steps.
- Free 30-minute consultation
- Indicative estimate after the call
- NDA available on request