Input Tax Credit Under Section 16: The Four Conditions, and the Two That Cost People Money

Input tax credit is the whole point of a value added tax, and it is the single largest source of GST demands. The reason is simple: businesses treat credit as something they are entitled to because they paid tax, when the statute treats it as something they are entitled to only when four separate conditions are all satisfied.

The conditions are in Section 16(2) of the CGST Act. Two are easy. Two are where the money is lost.

Condition one: you hold a tax invoice

Section 16(2)(a) — the registered person must be in possession of a tax invoice or debit note issued by a supplier registered under the Act, or another prescribed document.

A bill of supply from a composition dealer is not a tax invoice and carries no credit. Nor does a proforma invoice, a quotation, a delivery challan on its own, or a purchase order. Where the credit arises on a reverse charge supply, the document is your own self-invoice under Section 31(3)(f), and if you never raised it, you have no document.

The invoice also has to contain the particulars Rule 46 requires, including your GSTIN. An invoice issued to the proprietor personally, or to a sister concern, does not give your registration a credit.

Condition two: the supplier has reported it

Section 16(2)(aa) is the condition that changed the game, and it is the one most businesses still have not fully absorbed.

Credit is available only where the details of the invoice or debit note have been furnished by the supplier in their statement of outward supplies and communicated to the recipient. In practice, that means the invoice has to show up in your GSTR-2B.

So the test is no longer "did I receive a valid invoice and pay the tax". It is "did my supplier file". You can be entirely honest, hold a perfect invoice, have paid the supplier in full, and still have no credit because the supplier did not file their GSTR-1.

This has a practical consequence that belongs in your purchase process rather than your tax process:

• reconcile GSTR-2B against your purchase register every month, not at year end;
• chase the supplier in the month the invoice is missing, while they still care about your next order;
• for material purchases, make the final payment tranche conditional on the invoice appearing in your 2B.

Condition three: you received the goods or services

Section 16(2)(b) — the registered person must have received the goods or services.

Two refinements. Where goods are delivered to someone else on your instruction — the bill-to/ship-to case — the deeming provision treats you as having received them, so credit survives. And where an invoice is received in instalments against a single supply, credit is available only on receipt of the last instalment.

This condition is also where the officer looks first in a suspected circular-trading or fake-invoice case. Documentary proof of movement — e-way bills, lorry receipts, weighbridge slips, gate inward entries, stock records — is what distinguishes a genuine purchase from a paper one. Keep it.

Condition four: the tax has actually been paid to the government

Section 16(2)(c) — tax charged on the supply must have been actually paid to the government, in cash or through utilisation of credit.

This is the condition businesses find hardest to accept, because it makes the recipient's credit depend on the supplier's conduct after the money has changed hands. Litigation on the point continues, and there is a real argument that a bona fide recipient who has paid the supplier in full should not bear the loss. But as the section stands, this is a condition of the entitlement, and tax authorities do raise demands on it.

Section 41 reinforces the position: credit availed in respect of a supply on which tax has not been paid is to be reversed, with interest.

The time limit, which has no remedy

Section 16(4) is the hard edge. Credit for an invoice or debit note cannot be taken after the due date of the return for November following the end of the financial year to which the invoice relates, or the date of filing the annual return, whichever is earlier.

Three things about it:

• it is a substantive limitation, not a procedural one. There is no condonation, no application, no officer with discretion;
• it applies invoice by invoice, not to the year in aggregate;
• it bites hardest on invoices that were missing from 2B, got chased, and were resolved in month twelve.

The practical answer is an annual ITC reconciliation performed in October, not March. By October you can still act: chase a non-filing supplier, raise a debit note, decide to write the credit off and reprice the relationship.

Blocked credits: Section 17(5)

Satisfying all four conditions still does not help if the credit is blocked. Section 17(5) is a list worth reading once in full, but the items that come up constantly are:

• motor vehicles for the transport of persons with approved seating capacity up to thirteen, with narrow exceptions, plus related insurance, servicing and repairs;
• food and beverages, outdoor catering, beauty treatment, health services, club and fitness memberships — unless you are in the same line of business, or the supply is an obligation under a law;
• works contract services for construction of immovable property, other than plant and machinery, and goods or services used for construction on your own account. This is the one that surprises people fitting out a new office;
• membership of a club, and travel benefits to employees on leave;
• goods lost, stolen, destroyed, written off, or given away as free samples or gifts;
• tax paid under Sections 74, 129 and 130.

A credit note from the supplier also requires a corresponding reversal at your end.

Apportionment: Rules 42 and 43

Where inputs are used partly for business and partly otherwise, or partly for taxable supplies and partly for exempt ones, credit is restricted to the business and taxable portion. Rule 42 deals with inputs and input services, Rule 43 with capital goods over a sixty-month life, and both require a monthly computation with an annual true-up.

Exempt supply for this purpose includes reverse-charge supplies, transactions in securities, sale of land and, subject to the explanation, sale of building. A company with a large fixed deposit or an occasional securities transaction can find itself with an apportionment obligation it never considered.

What scrutiny actually looks like

A Section 61 scrutiny of returns typically starts from automated comparisons, and the common triggers are:

• ITC in GSTR-3B exceeding ITC available in GSTR-2B;
• outward supplies in GSTR-3B not matching GSTR-1;
• a mismatch between turnover declared in GST returns and in the income tax return or financial statements;
• credit claimed where the supplier's registration was cancelled retrospectively.

The notice is ASMT-10, you reply in ASMT-11, and a satisfactory reply closes it with ASMT-12. An unsatisfactory one, or no reply, moves to Section 73 or 74 and a DRC-01.

The reply is almost always won or lost on reconciliation papers rather than on argument. If you can produce a monthly 2B-to-purchase-register reconciliation with explained differences, most scrutiny closes at ASMT-12. If you cannot, you are negotiating about numbers nobody can verify.

The short version

Hold a proper invoice. Make sure it is in your 2B. Keep proof the goods moved. Reconcile monthly and do a deliberate annual pass in October. Read Section 17(5) before you capitalise an office fit-out. None of that is difficult, but all of it has to be routine, because the one thing Section 16(4) does not allow is catching up later.