What best software for gstr 2a reconciliation involves, why most of it is avoidable, and how clean purchase entry turns a two-day job into a twenty-minute one.
2A and 2B, and why the difference matters
GSTR-2A is dynamic. It reflects what your suppliers have reported about you, and it keeps changing as they file. Useful for understanding, useless as a basis for a decision, because it will be different tomorrow.
GSTR-2B is generated for a period and does not move. That stability is why credit eligibility is worked out against it.
The practical rule: reconcile against 2B, and use 2A to work out why something in 2B is missing.
GSTR-2A: a statement that keeps moving
GSTR-2A is not a return you file. It is a dynamic statement the portal assembles from what your suppliers have reported about supplies made to you — and because it is dynamic, it changes as they file, including for periods you closed months ago.
That is both its use and its limitation. It is good for seeing what has turned up since you last looked and for chasing a supplier who has not filed. It is awkward as the basis of a credit claim, precisely because a figure you reconciled in May is not necessarily the same figure in July.
Which is why GSTR-2B exists alongside it: a static statement generated once per period, which is what a claim should be matched against. The sensible division is to claim against 2B and use 2A to watch what is still arriving.
If you are reconciling 2A, match on supplier GSTIN plus invoice number plus date rather than on amount. Amounts collide between invoices; that combination does not.
What Billixo does to reduce the work
- AI bill scanning. Photograph the supplier bill and the GSTIN, invoice number, date, lines and tax come back as a draft — no retyping, so no transcription mismatch.
- Supplier records with GSTIN and state, held once and reused, so the same supplier is never entered two slightly different ways.
- Purchase entries that keep the supplier’s own invoice number and date, exactly as printed, which is what the match is made on.
- Correct tax heads on purchases, derived from the supplier’s state rather than chosen.
- Period discipline, so a purchase booked into the wrong month is visible rather than silent.
- Exports in CSV, Excel and JSON, so your reconciliation can happen wherever you or your CA prefer.
A reconciliation method that finishes
- Download GSTR-2B for the period from the GST portal.
- Export your own purchase register for the same period.
- Match on supplier GSTIN + invoice number + invoice date. Do not match on amount — amounts collide, that combination does not.
- Normalise the obvious differences first: leading zeros, slashes, spacing in invoice numbers. A surprising share of "missing" invoices are the same invoice written two ways.
- Split the remainder into the four categories above.
- Fix everything on your side — wrong period, wrong number, unrecorded purchase.
- Chase the suppliers who have genuinely not filed, while you still owe them money.
- Keep the working file. When a notice arrives eighteen months later, it is the only thing that reconstructs what you did and why.
The cheapest reconciliation is the one you avoid
Every hour spent reconciling is an hour spent finding transcription errors. The way to spend fewer of them is to stop transcribing.
That is the strongest practical argument for scanning supplier bills rather than typing them: the invoice number and date come off the document itself, which is precisely the field pair the match is made on.
Businesses that scan their purchase bills report the same thing — the reconciliation does not become clever, it becomes short, because the only remaining mismatches are the real ones.
When to do it, and who should
Monthly, close to the filing date, by whoever entered the purchases — not by the CA in a batch at year end.
The person who entered the bill can look at a mismatch and remember the transaction. Someone reconciling nine months later can only see two rows that do not agree, and will make the safest assumption, which is usually to give up the credit.
This is the one compliance job where doing it yourself is genuinely cheaper than delegating it.
CGST, SGST and IGST — worked out, not chosen
Whether a sale attracts CGST and SGST or IGST is not a preference. It follows from the place of supply: same state as your registration means the tax splits into central and state halves, a different state means one integrated tax at the combined rate.
That sounds simple and goes wrong constantly, because it is a dropdown in most billing software and a dropdown is something a tired person clicks past. In Billixo the split is derived from the state on the customer record against the state on your registration, and it changes the moment either does.
The consequence of getting it wrong is real: an IGST invoice raised as CGST/SGST has to be credited and reissued, and if the return has already gone in, amended.
HSN and SAC codes, and how many digits you need
Every line on a tax invoice needs an HSN code for goods or a SAC for services. How many digits depends on your aggregate turnover in the preceding financial year — smaller businesses report fewer digits than larger ones, and B2B and B2C invoices are treated differently.
Because the requirement is tied to turnover and has been tightened in stages, the practical answer is to store the fullest code you can against each product once, and let the software report at the level required. A six-digit code can always be truncated; a two-digit one cannot be expanded.
Billixo keeps the code on the product record and carries it onto every line automatically, and its AI HSN lookup will suggest one from a plain description when you genuinely do not know.
Bill scanning, in practice
The single largest time cost in most small businesses is not raising invoices — it is entering purchases. A photograph of a supplier bill goes in and a structured draft comes out: supplier, GSTIN, line items, rates, tax split and total.
You check it. That is the workflow, and it is deliberate: an extraction you did not read is a liability, not a saving. But checking a filled form takes fifteen seconds and typing one takes three minutes, and that difference compounds over a month of purchases.
Who it is built for
Small and mid-sized Indian businesses that are registered under GST and bill regularly. One person doing everything, or a counter with three people billing at once and an accountant who needs the month to close cleanly.
The design assumption throughout is that whoever raises the invoice is busy and is not a tax specialist. So the tax is computed rather than asked for, the compliance fields are populated rather than presented as questions, and the report the accountant wants is a download rather than a request.
Try it free — the free plan needs no card and does not expire.
The price, plainly
Free is ₹0 and stays ₹0. The paid plans are bought for a fixed term, paid once, with no auto-renewal and no card kept on file — when a term ends the account drops back to Free until you decide to buy again.
There is no per-invoice charge, no per-user surprise on the free plan, and no feature that is technically included but practically throttled. What the plan says you get is what you get.
Compare the plans on the home page, or just start free now and look at the ceiling from the inside.
Reliability, backups and getting your data out
Cloud billing software is only as good as its worst day. Two things matter more than any feature list: that your data is backed up somewhere you can reach, and that you can export it in a format something else can read.
Exports here are CSV, Excel and JSON, on every plan including the free one, covering customers, products, invoices and payments. That is the honest test of whether software respects you — not what it promises, but what it lets you take when you leave.
Frequently asked questions
How long should reconciliation take?
For a business entering a few hundred purchase bills a month, twenty to forty minutes if the data was captured cleanly. Days, if it was typed from paper under time pressure. The difference is almost entirely transcription accuracy.
Do I need separate reconciliation software?
Many businesses do not. If your purchase register is clean and exports properly, the comparison itself is straightforward. Dedicated tools earn their place at high volume or across many GSTINs.
Should I reconcile against 2A or 2B?
Against 2B for credit decisions, because it is static for the period. Use 2A to understand why something is or is not appearing, since it updates as suppliers file.
Are the invoices valid for GST?
Yes. Every invoice carries the fields Rule 46 requires — GSTIN, HSN/SAC on each line, place of supply, the correct CGST/SGST or IGST split, and a consecutive invoice series that restarts each financial year.
Can I move my existing customers and products in?
Yes. Bulk import from CSV or Excel on any paid plan, and export back out in CSV, Excel or JSON at any time, including on Free. Most people bring their party and item lists across in one pass and carry outstanding invoices as opening balances.
See it working on your own bills
The fastest way to judge billing software is to bill with it. Photograph one supplier invoice, raise one sales invoice, and look at the PDF your customer would receive.
Open the software demo → — free account, no card, about a minute to set up.
More details on the home page → — what it does, what it costs, and where the limits are.
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