Solutions · Compliance
GST Compliance Automation
Tax checked per line, registers reconciled before filing, exposure surfaced while it can still be fixed.
Why GST compliance is hard
The return, as people describe it
Nobody complains about tax validation. They complain about the spreadsheet of differences three days before filing, the credit that had to be reversed, and the supplier whose registration turned out to have lapsed in March.
What you hear
2B does not match the register
Three days before the return, a spreadsheet of a few hundred differences. Some are suppliers who filed late, some are rate mistakes from months ago, and nobody can tell which is which without opening each invoice.
What you hear
We claimed credit we should not have
Input tax credit taken on an invoice the supplier never reported, or on a category that was blocked all along. It surfaces in a notice, with interest.
What you hear
The supplier's GST was cancelled
Payments went out for months to a vendor whose registration had lapsed. The credit on every one of those invoices is now in question.
What is underneath
Tax is checked at filing, not at arrival
The invoice was paid weeks ago. The first time anyone looks at its GSTIN, HSN or rate is when the return is due, which is the worst moment to find a problem.
What is underneath
The check is per invoice, not per line
A fourteen-line invoice with one line at the wrong rate passes a header-level total check. The error is in the lines, and so is the credit.
What is underneath
Reconciliation happens once
Register to 2B is a monthly event rather than a running position, so a supplier who files late looks identical to a supplier who will never file.
How PTAS AI automates it
Check at arrival, reconcile continuously
The tax on an invoice is tested the day it arrives, line by line, and the register it builds is compared with GSTR-2B as 2B changes. Filing becomes the last step of a running process rather than the moment the checking starts.
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01
Understand
DocPro reads each supplier invoice as fields: the supplier's GSTIN and yours, invoice number and date, place of supply, every line with its HSN or SAC code, taxable value, rate and the tax split, plus the IRN and QR code where an e-invoice is required. The arithmetic is recomputed and each field carries a confidence score.
A tax invoice becomes lines you can test
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02
Decide
FinSuite runs the checks on each line. Is the supplier's GSTIN active, and does the name match? Is the tax type right for the place of supply, IGST across states or CGST and SGST within one? Does the rate charged agree with the HSN? Is this a blocked category, or one that falls under reverse charge? Is the IRN genuine where one is required?
Every line classified before posting
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03
Act
Clean invoices post with the credit classified as eligible, and the reverse charge liability raised where it applies. Anything that fails a check is held with the specific line and reason, and the supplier or the buyer is asked for the correction. The purchase register builds itself from what passed.
The register is a by-product, not a month-end job
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04
Verify
The register is reconciled against GSTR-2B as it updates, so each invoice has a running status: matched, filed by supplier at a different value, not yet filed, or never going to be. Suppliers who are late get chased before the return, not after. The whole position, with evidence, is on the audit trail when the return is prepared.
Filing starts from a reconciled position
The workflow
What one invoice looks like after the checks
The tax on an invoice lives in its lines. Reading the lines, recomputing the totals and testing each rate against its HSN is what makes the credit on that invoice something you can defend.
One invoice, as the agent returns it · Illustrative example
Thirteen fields cleared the threshold and posted. One handwritten amendment did not, so that row alone went to review.
Line by line
A wrong rate on one line is found on that line, not lost in a matching total.
At arrival
A cancelled GSTIN is found on the invoice, not in the return.
Classified, not assumed
Eligible, blocked and reverse charge are decided per line by your rules.
Key capabilities
Eight things the workflow has to do well
A GSTIN format check on its own catches typing errors. The rate, the place of supply, the classification and the running reconciliation are where the credit is won or lost.
Reading
Line-level extraction
HSN or SAC, quantity, taxable value, rate and the IGST or CGST and SGST split read per line, with the invoice total recomputed from the lines rather than trusted from the footer.
Reading
E-invoice verification
Where the supplier is required to issue an e-invoice, the IRN and signed QR code are read and checked, and the invoice details are compared with what the QR carries.
Checks
GSTIN status and name
The supplier's GSTIN checked for format, registration status and legal name, at arrival and again on a schedule, so a cancellation after onboarding is caught.
Checks
Place of supply and tax type
The tax charged compared with what the place of supply requires, so an inter-state supply charged CGST and SGST is held rather than posted.
Classification
Rate against HSN
The rate charged on each line compared with the rate schedule for its HSN or SAC, with tolerances for rate changes around their effective dates.
Classification
Blocked credit and reverse charge
Lines in categories where credit is restricted are classified as ineligible by your rules. Supplies under reverse charge raise the liability and the matching credit.
Reconciliation
Register to GSTR-2B
Each register entry matched to 2B on GSTIN, invoice number, date and value, with fuzzy matching for suppliers who report numbers in a different format. Status is held per invoice and updated as 2B changes.
Reconciliation
Supplier follow-up
Suppliers with unfiled or mismatched invoices are listed with the amounts at stake and chased from the system, with the correspondence attached to the invoice.
Before the return
What a person actually sees
Nobody should be matching a register to 2B by eye. The person preparing the return should open a list of what is unsettled, each item named, with the supplier and the invoice attached.
Purchase register reconciled to 2B · Illustrative example
Found at filing, these are a scramble. Found continuously, they are twenty emails.
A supplier who has not filed, a rate that differs from the HSN, a line in a blocked category: these are the items left to settle. Each has been open since the invoice arrived rather than since the register was exported, so the supplier has already been chased and the buyer has already been asked. What reaches the person preparing the return is a decision on the credit, with the history in front of them, and that decision is recorded with its reason.
Business outcomes
What changes, and how you would measure it
We do not quote recovered credit or interest saved before seeing your register. We do agree the measures up front, on your numbers, so the decision to extend is based on something.
What changes
A reconciled position before the return
Count the register-to-2B differences open on the day the return is prepared. The aim is that the only items left are suppliers who genuinely have not filed, each already chased.
What changes
Credit at risk, known early
The value of input credit on invoices from suppliers who have not filed, as a running figure rather than a month-end discovery. It is also a useful number in a supplier negotiation.
What changes
Rate errors caught per line
Lines held for a rate that does not agree with the HSN, found at arrival. Track it by supplier; one supplier usually accounts for most of them.
What changes
Blocked credit never claimed
Ineligible lines classified at posting rather than reversed later. The measure is reversals in subsequent returns, which should fall to nothing.
What changes
Cancelled registrations caught
Invoices from a supplier whose GSTIN lapsed, caught on arrival rather than after payment. Each one is a credit you did not have to argue about.
What changes
Notices you can answer in a day
A query on any invoice answered from the record: the invoice image, the checks that ran, the 2B status and who decided what. Measure the time from notice to response.
Integrations
Your ERP keeps the ledger, your adviser keeps the filing
Classified entries post to the ERP with your tax codes and GL accounts. The reconciled register and the open items export in the formats your return preparation already uses.
SAP
ERP · API, IDoc or file
Oracle
ERP · API or file
Microsoft Dynamics
ERP · API
NetSuite
ERP · API
Tally
Accounting · XML import or ODBC
Zoho
Accounting · API
QuickBooks
Accounting · API
REST API
Any system · custom
Webhooks
Status events out
Four integration methods are possible: native integration, API integration, file or flat-file exchange, and custom integration. The systems named here are planning examples; which method applies to your instance, and how GSTR-2B data is sourced for your GSTINs, is confirmed during assessment rather than assumed. See FinSuite integrations for how postings and status flow.
Security and governance
Controls an auditor would recognise
A tax position is only as good as the record behind it. These are the controls built into the workflow, and the FinSuite security page has the detail.
Rules you own
Rate schedules, blocked categories and reverse charge lists are configuration you can see and change, with each version dated. A classification can always be traced to the rule that produced it.
Overrides with a reason
A person can reclassify a line the rules held, but only with a recorded reason, and the override is reported separately so a pattern of them shows up.
A complete audit trail
Each invoice carries the lines as read, every check and its result, the 2B status over time, the correspondence with the supplier and who decided what. Exportable for a statutory audit or a departmental query.
Data handling
GSTINs, invoice images and filing data are held with role-based access and retained for the period the law and your policy require. Cloud, private cloud or on-premise deployment where supported, with ISO/IEC 27001-aligned practices.
Product connection
The products that deliver it
DocPro reads the invoice down to the line. FinSuite runs the checks, builds the register and reconciles it. The solution is the two configured to your GSTINs and your categories.
FAQ
Questions tax and finance teams ask
How is this different from the FinSuite GST Compliance module page?
This page is about the problem and the workflow: credit claimed on invoices that were never reported, rate errors found months late, and a reconciliation that happens once a month under pressure. It describes the automated version from the invoice arriving to the return being prepared. The module page lists the FinSuite features that run the checks. Read this one to decide whether GST is the right first project; read that one to evaluate the software.
Does this file our returns?
No. It gets you to a reconciled position with the evidence attached, which is the hard part. Preparing and filing the return stays with your team or your adviser, working from a register where every line has already been checked and every difference with 2B has a status. We would rather be clear about that boundary than blur it.
What about invoices where the supplier files late rather than never?
They are the majority of differences, and the system treats them as such. An invoice not yet in 2B is held in a pending status and re-checked as 2B updates, so it clears on its own when the supplier files. Only invoices that stay unfiled past the window you set are escalated for a decision on the credit.
Our rates and categories change. Who keeps the rules current?
Rate schedules and category lists are configuration with effective dates, and we maintain the general schedules. Rules specific to your business, which categories you treat as blocked and how you handle reverse charge for particular suppliers, are yours to set, and changing them is configuration rather than a change request.
How long does it take to go live?
The typical range is four to eight weeks for the invoice checks and the 2B reconciliation, and it varies with how many GSTINs you operate, how your register is held today and how many suppliers need chasing in the first cycle. The first month usually produces a list of long-standing differences, and clearing that list is a tangible result in itself.
Keep reading
Related solutions and products
FinSuite GST Compliance
The module that runs these checks, feature by feature.
Read more →Accounts Payable Automation
The payables workflow these checks sit inside.
Read more →Vendor Management Automation
GSTIN verified at onboarding, before the first invoice.
Read more →GST Automation Guide
A longer read on how GST work changes when it runs per line.
Read more →Next step
Reconcile last quarter, before you automate this one
Bring one GSTIN, one quarter of invoices and the 2B for that period. The list of differences it produces is the clearest case for or against doing this.