Answer these questions before you read on
Commit to an answer before you open each one. Together they show where the problem is.
1How much input credit did you claim last month, and how much did GSTR-2B actually show?
If you don't know both numbers, you don't know whether you're paying GST twice: once to suppliers and once in cash.
2Which of your suppliers filed their GSTR-1 late last quarter?
Their late filing is your missing credit. Most businesses learn this only when the return doesn't balance.
3Do you pay suppliers before checking whether their invoice appears in 2B?
If you do, you've lost your best leverage to make them file.
4Are there supplier invoices you haven't paid for more than 180 days?
Credit on those must be reversed until you pay, with interest. Old disputes quietly cost GST credit.
5Do you claim GST on staff food, cars or gifts?
Some credits are blocked by law. Claiming them now means reversing them later, with interest.
Stuck credit isn't a tax problem. It's a cash problem: every rupee of it is paid out of your working capital.
How input credit reaches your return
Your supplier files GSTR-1 with your GSTIN on the invoice. The portal builds your GSTR-2B from those filings. You claim credit in GSTR-3B up to what 2B shows and what the law allows. If any step fails, the credit doesn't arrive and you pay the GST in cash.
Find why your credit is stuck
| Cause | How it shows | The fix |
|---|---|---|
| Supplier hasn't filed | Invoice in your books, not in 2B | Hold payment, chase the supplier, track until it appears |
| Invoice errors | Wrong GSTIN, amount or place of supply | Ask for an amendment or a fresh invoice |
| Timing | Invoice dated at month-end, filed next month | Claim in the month it appears; don't claim early |
| Blocked credit | Food, vehicles, gifts, personal use | Don't claim it; budget the full cost |
| Unpaid over 180 days | Old disputed or delayed supplier bills | Pay or settle; reverse and reclaim when paid |
Then see how much of your bank balance is genuinely yours after GST and other dues:
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The monthly 2B reconciliation, step by step
- Download GSTR-2B after it's generated each month.
- Match it invoice by invoice with your purchase register.
- List invoices in your books but not in 2B, by supplier.
- List invoices in 2B but not in your books, and find out why.
- Send the missing list to each supplier and hold their next payment.
- Claim only what 2B shows and the law allows.
Six businesses, six versions of the same problem
The same problem looks different in every industry. Pick the business closest to yours:
These are composite businesses with illustrative figures, built to show how the method works. They are not CFOSurge client results.
Electrical distributor, ₹30 crore turnover
The numbers (₹ lakh, illustrative)
| Input credit in purchase register | 120 |
| Credit in GSTR-2B | 102 |
| Missing: three suppliers filing late | 18 |
| Credit stuck this month (₹ lakh) | 18 |
The diagnosis
Three small suppliers file late, so ₹18 lakh a month is paid in cash instead of credit.
The full solution, in order
- Hold their payments until invoices appear in 2B.
- Send a monthly missing list to each supplier.
- Replace the worst non-filer with a compliant supplier.
Don't do this
- Paying in full before checking 2B.
Numbers to watch every month
- Credit pending by supplier
- Days to appear in 2B
Machined-parts maker, ₹20 crore turnover
The numbers (₹ lakh, illustrative)
| Input credit in purchase register | 64 |
| Credit in GSTR-2B | 55 |
| Wrong GSTIN on invoices | 5 |
| Job-workers not filing | 4 |
| Credit stuck this month (₹ lakh) | 9 |
The diagnosis
A branch GSTIN was used on some invoices, and two job-workers don't file regularly.
The full solution, in order
- Send suppliers the correct GSTIN and ask for amendments.
- Make filing a condition in job-work agreements.
- Reconcile job-work challans monthly.
Don't do this
- Ignoring small job-workers' compliance.
Numbers to watch every month
- Credit pending by supplier
- Job-work reconciliation
Garment exporter, ₹60 crore turnover
The numbers (₹ lakh, illustrative)
| Input credit on fabric and services | 85 |
| Credit in GSTR-2B | 78 |
| Refund claims pending | 40 |
| Credit and refunds tied up (₹ lakh) | 47 |
The diagnosis
Exporters depend on refunds as well as credit. Delays in both tie up cash.
The full solution, in order
- File refund claims every month with complete documents.
- Reconcile shipping bills with returns.
- Forecast refunds conservatively.
Don't do this
- Letting refund claims pile up.
Numbers to watch every month
- Refunds pending and their age
- Credit pending
Chemicals maker, ₹80 crore turnover
The numbers (₹ lakh, illustrative)
| Credit on disputed supplier bills | 26 |
| Months unpaid | 7 |
| Credit reversed (₹ lakh) | 26 |
The diagnosis
A quality dispute left bills unpaid for seven months, so credit had to be reversed with interest.
The full solution, in order
- Settle the dispute with a credit note or partial payment.
- Pay the undisputed part to protect that credit.
- Reclaim credit once paid.
Don't do this
- Letting disputes run past 180 days.
Numbers to watch every month
- Unpaid bills over 150 days
Civil contractor, ₹25 crore turnover
The numbers (₹ lakh, illustrative)
| Blocked credit wrongly claimed | 7 |
| Interest on reversal | 1 |
| Cost of the mistake (₹ lakh) | 8 |
The diagnosis
Credits on certain vehicles and the site canteen are blocked by law. Claiming them created a reversal and interest.
The full solution, in order
- Map blocked credits in your purchase ledger.
- Treat them as cost in project budgets.
- Review claims before filing.
Don't do this
- Claiming every GST charged without checking.
Numbers to watch every month
- Blocked credit by category
Consulting firm, ₹8 crore revenue
The numbers (₹ lakh, illustrative)
| Credit on co-working and software | 12 |
| Appearing in 2B | 8 |
| Credit missing each quarter (₹ lakh) | 4 |
The diagnosis
Some vendors invoiced without the firm's GSTIN, and import of services needs reverse-charge handling.
The full solution, in order
- Give every vendor your GSTIN at onboarding.
- Handle reverse charge on imported services correctly.
- Reconcile monthly.
Don't do this
- Assuming software subscriptions carry credit automatically.
Numbers to watch every month
- Credit pending by vendor
Hover over a business for a preview (tap on a phone), then click to open the full case.
What to do this month
- Make GST filing a supplier condition. Pay suppliers only after their invoice appears in 2B, and say so in your purchase terms.
- Fix invoice errors immediately. Wrong GSTINs and amounts get worse with time.
- Clear old unpaid bills. Settle or pay anything near 180 days.
- Drop non-filers. A supplier who repeatedly doesn't file is costing you cash.
- Budget blocked credits as cost. Price them into your products.
Keep credit flowing every month
- Reconcile 2B before filing 3B, every month.
- Send each supplier their missing invoice list.
- Track non-filers and payment holds.
- Review unpaid bills over 150 days.
- Report stuck credit in the monthly MIS as a working-capital line.
Mistakes that turn stuck credit into notices
- Claiming credit that isn't in 2B.
- Paying suppliers in full before checking their filing.
- Forgetting the 180-day rule on disputed bills.
- Claiming blocked credits.
- Leaving reconciliation to the year-end.
Official sources and guidance
Rules, rates and thresholds change. Check the current position at these official sources before acting.
- GST portalReturns, GSTR-2B and input tax credit
ReferenceKey terms in plain English
5 terms
- Input tax credit (ITC)
- GST paid on purchases that you can set off against GST on your sales.
- GSTR-1
- The return in which suppliers report their sales invoices.
- GSTR-2B
- Your monthly auto-generated statement of available input credit.
- GSTR-3B
- The monthly summary return in which you pay GST and claim credit.
- Blocked credit
- Credit the law doesn't allow, such as on certain vehicles, food and personal use, with limited exceptions.
Questions owners also ask
Why is my input credit not showing in GSTR-2B?
Usually because the supplier hasn't filed their GSTR-1, filed it late, or made an error such as a wrong GSTIN. Check with the supplier and hold payment until it appears.
Can I claim credit if the supplier filed late?
Yes, in the period it appears in your 2B, within the time limits the law allows for claiming credit.
What is the 180-day rule?
If you don't pay a supplier within 180 days of the invoice, the credit must be reversed, with interest, and can be reclaimed when you pay. Confirm current rules with your GST adviser.
Want a CFO to work through this with you?
If your credit is stuck and you want a monthly reconciliation that runs itself, A CFOSurge CFO can go through it with you using your actual numbers.
- Plans from ₹50,000 a month, fixed after a free assessment
- Free consultation with a senior CFO
- No cost, no obligation
- Pay nothing if you don't see value in the first 2 weeks