ITC Reconciliation: Matching GSTR-2B With Your Books
Input tax credit is the largest number on most GST returns and the one the department examines first. Credit is available only where the invoice reaches your GSTR-2B, and only until 30 November of the following year. Reconciling monthly is what keeps that credit from quietly disappearing.
Why it matters
Unreconciled Credit Is Money You Quietly Lose
Credit doesn't fail loudly. A supplier files late, the invoice slips a month, nobody checks, and by December the window has closed.
The deadline is absolute
Credit for a financial year can only be claimed up to 30 November of the following year. After that it lapses, whatever the reason.
Wrong claims cost 24%
Credit availed and utilised incorrectly carries interest at 24% a year, well above the 18% on ordinary late tax.
The system compares automatically
A difference between credit claimed in GSTR-3B and your GSTR-2B produces an intimation in DRC-01C with only seven days to reply.
It depends on other people
Your credit relies on your suppliers filing correctly and on time. Reconciliation is how you find out that they haven't, while you can still do something about it.
The four conditions for claiming credit
Section 16 allows credit only when all of these are met:
You hold a valid tax invoice or debit note
It must carry your GSTIN, the supplier's GSTIN, a valid invoice number and date, and the tax shown separately.
The invoice appears in your GSTR-2B
The supplier must have reported it in their GSTR-1. If it isn't communicated to you in the statement, the credit isn't available for that period.
You have received the goods or services
Credit on an advance payment isn't available. Where goods arrive in lots, credit is taken on receipt of the last lot.
The supplier has paid the tax
Credit can be questioned where the supplier has collected tax but not deposited it, which is why supplier selection matters more than it looks.
Under Rule 37, if you haven't paid the invoice value and tax within 180 days of the invoice date, the credit has to be reversed, with interest. It can be reclaimed when you eventually pay. This is the reversal most often missed, because it needs your ageing report rather than your GST data.
GSTR-2A and GSTR-2B are not the same
| GSTR-2A | GSTR-2B | |
|---|---|---|
| Nature | Dynamic, keeps changing as suppliers file | Static, fixed once generated |
| Generated | Continuously | Normally on the 14th of the month |
| Purpose | A running view of supplier filings | The statement your eligible credit is based on |
| Use it for | Following up with suppliers | Claiming credit in GSTR-3B |
Claim on GSTR-2B. Use GSTR-2A to chase. Since the Invoice Management System was introduced, your actions there also shape what lands in GSTR-2B, because invoices you leave untouched are treated as accepted when the statement is generated.
How to run the reconciliation
Download GSTR-2B and export your purchase register
Do this after the 14th. Your register needs supplier GSTIN, invoice number, date, taxable value and tax split by head.
Standardise invoice numbers
Most mismatches are formatting, not substance. Strip spaces, slashes and leading zeros on both sides before comparing.
Match on GSTIN, invoice number and date
Then compare the tax amounts. Group the results into four buckets: matched, value mismatch, in books but not in 2B, and in 2B but not in books.
Investigate each bucket
Small rounding differences can be accepted. Anything else needs an explanation you would be comfortable showing an officer.
Act before you file GSTR-3B
Claim only what is eligible and supported, keep the working, and send the follow-up list to suppliers the same week.
What the gaps usually mean
In your books, not in 2B
Usually the supplier hasn't filed GSTR-1 yet, or filed under the wrong GSTIN. Keep the credit pending and claim it in the month it appears. Don't claim it early.
In 2B, not in your books
Either an invoice you haven't recorded, or one reported against your GSTIN by mistake. Record it if it's yours. Reject it in IMS if it isn't.
Tax amount differs
Often a rate difference, a credit note the supplier issued that you haven't recorded, or a mistake in the invoice value. Confirm with the supplier in writing.
IGST instead of CGST and SGST
A place of supply error. Neither side can simply adjust it; the supplier has to amend the invoice, so raise it quickly.
Import credit missing
Credit on imported goods comes from the bill of entry through ICEGATE, not from a supplier's GSTR-1. Check that section of 2B separately.
Invoice in the wrong period
A March invoice reported in April is normal at year end. Track it as a cross-year item, because it affects your annual return too.
Credit you cannot claim
Section 17(5) blocks credit on certain items regardless of business use. The common ones:
- Motor vehicles for carrying passengers with up to 13 seats, unless you are in the business of supplying or hiring vehicles or providing driving training
- Food and beverages, outdoor catering, health services and beauty treatment, unless you make an outward supply of the same category or the law obliges you to provide it to employees
- Membership of clubs, health and fitness centres
- Works contract services for constructing immovable property, other than plant and machinery, and goods or services used for construction on your own account
- Goods lost, stolen, destroyed, written off, or given away as gifts or free samples
- Goods or services used for corporate social responsibility activities
- Travel benefits given to employees on leave or home travel concession
Reversals you have to track
| Rule | When it applies | What to do |
|---|---|---|
| Rule 37 | Supplier not paid within 180 days of the invoice date | Reverse with interest; reclaim when you pay |
| Rule 42 | Inputs and input services used partly for exempt supplies or personal use | Reverse proportionately each month, with an annual recalculation |
| Rule 43 | Capital goods used partly for exempt supplies | Reverse proportionately over 60 months |
| Section 17(5) | Blocked credit | Keep it out entirely; don't claim and reverse |
| Credit notes | Supplier issues a credit note reducing the value | Reverse the corresponding credit in the same period |
Rule 42 catches more businesses than expected. Interest income, dividend, and the sale of securities or land are exempt or non-taxable, and having them in your accounts can trigger a proportionate reversal even though your main business is fully taxable.
This guide is general information on Indian tax and corporate law as it stood on 11 September 2026, and is not advice for any particular case. Rules, due dates and forms change, and how they apply depends on your facts. Please confirm the current position before acting, or speak to a qualified professional.
Who this applies to
Where Credit Goes Missing in Vadodara Businesses
The weak point differs by business model.
Manufacturers
Capital goods credit, job work movements and imports need separate tracking, since import credit comes through the bill of entry rather than a supplier return.
Traders with many small suppliers
High invoice volumes and suppliers on quarterly filing mean credit routinely lands a month or a quarter late. Monthly follow-up is the only remedy.
Businesses with exempt income
Interest, dividend and property income can trigger Rule 42 reversals that never get calculated until an officer asks.
Firms building their own premises
Credit on construction of immovable property on your own account is blocked, including much of the material and contractor cost.
Frequently asked questions
Answers to Your Input Tax Credit Questions
Should I claim credit based on GSTR-2A or GSTR-2B?
GSTR-2B. It is static, generated on the 14th of the month, and is the statement your eligible credit is based on. GSTR-2A keeps changing as suppliers file, so use it to follow up with suppliers rather than to claim.
My supplier hasn't filed GSTR-1, so the invoice isn't in my 2B. Can I still claim?
No. Credit is available only when the invoice is communicated to you in GSTR-2B. Keep it pending and claim it in the month it appears, provided that is on or before 30 November of the following financial year. After that the credit lapses.
What is the last date to claim credit for FY 2025-26?
30 November 2026, through your GSTR-3B, or the date you file the annual return if that is earlier. The annual return cannot be used to claim credit you didn't take in the monthly returns.
What happens if I claim more credit than my GSTR-2B shows?
The system generates an intimation in Form DRC-01C, and you have seven days to explain the difference or pay through DRC-03. Credit wrongly availed and utilised attracts interest at 24% a year, so keep your reconciliation working ready to support the claim.
Do I have to reverse credit if I haven't paid my supplier?
Yes. Under Rule 37, credit must be reversed with interest if the invoice value and tax are not paid within 180 days of the invoice date. You can reclaim it in the period you make the payment, so run the check against your creditor ageing report each month.
Not Sure How Much Credit You're Losing? Let's Find Out.
Share your purchase register and GST login, and we'll reconcile it against GSTR-2B, list the credit you can still claim before 30 November and flag the reversals that are due.
C M Patel & Company, Chartered Accountants
204, Pavan Complex, Jetalpur Road, Jetalpur, Vadodara, Gujarat 390007
Phone +91 99740 37318 · Email info.cmpatelandcompany@gmail.com
Monday to Saturday 10:00 am – 8:00 pm · Sunday 12:00 pm – 5:00 pm