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An Indian residential developer transitioning a project from under-construction to ready-possession must correctly identify the moment each unit's supply switches from taxable (5% CGST non-affordable / 1% CGST affordable under Notification 3/2019-CTR) to out-of-GST-scope (Schedule III Entry 5 CGST Act 2017), applying the switch on a unit-by-unit consideration-flow basis rather than a project-level cutover, and reversing proportionate ITC on unsold stock at CC date under CGST Rules 42 and 43.
Anchor every sale to two date fields — the CC (or first-occupation) date from the municipal-authority portal, and the consideration-received date from the bank statement. For each unit, classify the sale as Schedule III (entire consideration post-CC) or under-construction (any consideration pre-CC); apply 5%/1% only where under-construction. On CC date, compute the exempt-to-total carpet-area ratio for the project, reverse that fraction of cumulative ITC under Rule 42/43 in the CC-month GSTR-3B, and true-up in GSTR-9.
Project master keyed by RERA registration + municipal approval file number with CC date, OC date, competent-authority reference; unit master with carpet area, agreement date, agreement value, CC status at agreement, first-consideration date, last-consideration date; consideration receipt log tied to bank statement credit with buyer PAN and 26QB reference; ITC reversal register capturing cumulative ITC claimed on inputs/services/capital goods, carpet-area-based reversal ratio, GSTR-3B period, GSTR-9 true-up amount.
A unit-level GST classification register showing Schedule III units and under-construction units with the CC date and consideration flow evidence per unit; a monthly GST invoice register reconciled to GSTR-1 with the taxable-vs-exempt split; a CC-month ITC reversal working paper tying Rule 42/43 reversal to unit inventory list and cumulative ITC ledger; an annual GSTR-9 true-up pack tying the reversal to closing unsold stock.
A Bengaluru developer finalising Q1 books for a 340-unit ready-possession tower spots the reconciliation puzzle sitting at the top of the audit query list: the municipal completion certificate for the project was issued on 15 January 2026, but 47 flats were booked between 1 December 2025 and 30 April 2026 with agreement values ranging from ₹85 lakh to ₹1.4 crore. Some buyers paid a token pre-CC and the balance post-CC. Some paid the whole thing post-CC. And a small handful signed pre-CC agreements with consideration flow running past the CC date. The finance controller cannot answer a straightforward question — how many of these 47 sales carry 5% GST, and how many are out of scope under Schedule III Entry 5 — without a unit-level date reconciliation of CC issuance, agreement signing, and every consideration receipt tied to bank statement credits. Completion certificate flat sale no GST India is a boundary-condition reconciliation, not a project-level tax election.
Quick reference
| Item | Value |
|---|---|
| Governing law | CGST Act, 2017 — Schedule III Entry 5 |
| Effect | Sale of building post-CC / post-first-occupation is neither supply of goods nor supply of services (out of GST scope) |
| Two conditions | (1) CC issued by competent authority OR first occupation, whichever earlier (2) entire consideration received after that event |
| Under-construction rate | 5% CGST non-affordable / 1% CGST affordable (Notification 3/2019-CTR, effective 1 April 2019) |
| ITC reversal | Rule 42 (inputs and input services) + Rule 43 (capital goods) proportionate reversal on CC date |
| Buyer-side TDS | 1% on consideration above ₹50 lakh under the successor to legacy Section 194-IA (Income Tax Act 2025) |
| Stamp duty | Independent of GST — state levy on instrument, applies pre- and post-CC identically |
| Composite supply | Car parking, PLC, floor-rise follow principal supply’s tax status |
The one-paragraph reconciliation
A residential flat sold after the local municipal authority has issued the completion certificate — or after first lawful occupation, whichever is earlier — is not a supply under GST at all. Schedule III Entry 5 of the CGST Act 2017 removes it from the definition of supply. The 5% (non-affordable) or 1% (affordable) under-construction rate under Notification 3/2019-Central Tax (Rate) does not apply. But this is not a project-level flag — it is a unit-level classification driven by the consideration-flow sequence relative to the CC date. And the day the project’s CC is issued, the developer must reverse a proportionate slice of the input tax credit it earlier claimed on construction inputs, because the unsold stock’s future output has just become exempt. Reconciliation ties three data streams — the CC certificate from the state municipal portal, the bank statement receipts per unit, and the ITC ledger — into a single unit-by-unit register that the GST auditor and the state RERA inspector can both re-verify.
What the post-CC flat sale looks like in India
Every reasonably scaled Indian residential developer — DLF, Godrej Properties, Oberoi Realty, Prestige Estates, Brigade Enterprises, Sobha, Puravankara, Macrotech, Sunteck Realty, Kolte-Patil — runs a mix of under-construction and ready-possession inventory. The under-construction inventory attracts 5% (non-affordable) or 1% (affordable) CGST on every rupee received from the buyer. The ready-possession inventory does not. In an eight-tower project, three towers may still be under-construction while five have received CC — the same developer, the same project registration, the same GSTIN, but two different GST treatments per invoice depending on which tower the flat sits in and when the buyer paid.
The complexity concentrates in the transition quarter — the quarter in which a tower flips from under-construction to CC-issued. During this window, three flat-sale sequences typically occur simultaneously:
Fully post-CC sale. Agreement signed after CC, first payment received after CC, final payment received after CC. Straightforward Schedule III Entry 5 case. No GST charged. No under-construction invoice issued. Consideration flow to escrow (under RERA — see the RERA escrow account reconciliation treatment) is a single non-GST transaction stream per unit.
Fully pre-CC sale spanning CC. Agreement signed pre-CC, initial milestone payments made pre-CC at 5% CGST invoicing, remaining milestones ostensibly due post-CC. The pre-CC portion has already attracted GST invoicing; the post-CC balance also carries GST because the entire consideration was not received post-CC. Schedule III does not apply to any part of this sale.
Cancellation-and-rebook across CC date. Buyer books pre-CC, cancels, developer refunds fully, unit sits in inventory, then re-books to a new buyer post-CC. The fresh sale to the new buyer meets the Schedule III test if all of the fresh consideration is received post-CC. The original cancellation may trigger separate GST on any forfeiture (Section 15(2) tolerating-an-act, recent AAR rulings).
Reconciliation must handle all three sequences in a single unit-level register with dated evidence for every transition.
The regulatory overlay
Schedule III Entry 5 CGST Act 2017. Reproduces below in effect: “Sale of building, where the entire consideration has been received after issuance of completion certificate, by the competent authority, or after its first occupation, whichever is earlier, shall be treated neither as a supply of goods nor a supply of services.” The competent authority means the municipal corporation, municipality, panchayat, cantonment board, or any other authority under any law empowered to issue completion certificates for the building. In Karnataka, the BBMP issues the OC; in Maharashtra, the BMC issues the CC; in NCR, the DDA or local municipal body; in Tamil Nadu, the CMDA or local corporation.
Notification 3/2019-Central Tax (Rate) dated 29 March 2019. Prescribes 5% CGST on under-construction non-affordable residential apartments and 1% CGST on under-construction affordable residential apartments, both without ITC, effective from 1 April 2019. The Notification also defines affordable residential apartment thresholds by carpet area and consideration value (60 sq m in metros / 90 sq m in non-metros, and consideration up to ₹45 lakh). The switch from the erstwhile 12% (net of one-third land abatement) rate to 5% no-ITC / 1% no-ITC was a structural change; the withdrawal of ITC is central to why post-CC unsold stock triggers Rule 42/43 reversal today.
Rule 42 and Rule 43 CGST Rules 2017. Rule 42 requires proportionate reversal of ITC on inputs and input services where a portion of the output is used for exempt supplies. Rule 43 does the same for capital goods over the useful-life period. Schedule III supplies (including post-CC flat sales) are treated as exempt for this purpose. On CC date, the developer computes the ratio of exempt-to-total supplies — in real estate practice this is measured by carpet area of unsold flats at CC divided by total project carpet area — and reverses that fraction of cumulative ITC claimed on project inputs.
Case-law and CBIC clarifications. CBIC’s Real Estate FAQ dated 14 May 2019 clarifies that first occupation means lawful possession by an allottee, not the ceremonial handover event. Karnataka AAR (2019, in re: Durga Projects) and Maharashtra AAR (in re: Signature Global Developers) both reaffirm that the entire consideration must be received post-CC for Schedule III to apply — a single pre-CC advance disqualifies the unit. Recent AARs on forfeited earnest money (Karnataka AAR in Bengaluru builders’ rulings) apply 18% GST on forfeiture as a tolerating-an-act consideration under Section 15(2), separate from the underlying flat’s Schedule III status.
A worked example — the CC-date boundary
Consider a ready-possession Sobha project in Bengaluru with CC issued by BBMP on 15 January 2026. Two buyers of the same 3BHK unit type, each at an agreement value of ₹95 lakh (non-affordable, above the ₹45 lakh cap). Numbers illustrative.
Buyer 1 — post-CC booking, post-CC consideration. Books the flat on 20 January 2026 (five days after CC). Pays ₹5 lakh booking on 22 January (post-CC), ₹85 lakh on 5 March (post-CC), ₹5 lakh on registration date 20 March (post-CC). Entire consideration ₹95 lakh received after CC. Schedule III Entry 5 applies. No GST charged. Buyer’s total tax outflow on the flat is nil GST, plus 1% TDS (₹95,000 under the successor to legacy Section 194-IA) on the consideration since it crosses ₹50 lakh, plus state stamp duty and registration.
Buyer 2 — pre-CC booking, straddled consideration. Books the flat on 10 December 2025 (before CC). Pays ₹5 lakh booking on 12 December (pre-CC), ₹85 lakh on 1 February 2026 (post-CC), ₹5 lakh on registration date 15 February 2026 (post-CC). Because ₹5 lakh was received pre-CC, the entire ₹95 lakh consideration is treated as under-construction supply. 5% CGST applies on ₹95 lakh — ₹4.75 lakh GST invoicing. Buyer’s total tax outflow: ₹4.75 lakh GST, plus 1% TDS (₹95,000), plus stamp duty and registration.
The tax wedge between the two buyers on economically identical flats is ₹4.75 lakh. It is entirely a function of the pre-CC advance sequence. Contract structuring cannot manufacture a Schedule III case where consideration was actually received pre-CC — but reconciliation can prevent misclassification in the other direction, where a post-CC-eligible sale is inadvertently taxed because the developer’s tax team could not confirm the CC date against the consideration flow at close of month.
Common reconciliation breakages
Six failure modes recur across post-CC transition quarters:
1. CC date sourced from developer’s project diary rather than municipal portal. The developer’s internal record of the CC date may lag or precede the state municipal portal’s issuance timestamp by several days. The tax auditor and the state RERA inspector rely on the portal timestamp — reconciliation must anchor the CC date to the state portal reference, not internal project papers.
2. First-occupation date confused with completion certificate date. Schedule III triggers on the earlier of the two events. In some projects, first lawful occupation precedes the CC by weeks — a partial-occupation permission from the municipal authority may allow limited move-in while the final CC is pending. If first occupation preceded CC and is documentable (municipal partial-occupancy permission), that earlier date drives Schedule III applicability.
3. Booking amount receipt date confused with agreement date. A buyer signs the agreement on 5 February but paid an EOI (expression-of-interest) token of ₹1 lakh on 15 January. If the ₹1 lakh EOI is treated as consideration (rather than a fully-refundable deposit), the sale is under-construction even if the agreement is dated post-CC. Reconciliation must classify every pre-agreement receipt as either consideration or refundable deposit, with the buyer’s paperwork supporting the classification.
4. Unsold stock ITC reversal delayed beyond CC-month. Rule 42/43 reversal is due in the GSTR-3B for the tax period in which the CC is issued. Deferring the reversal to the next month attracts interest under Section 50 and is a common audit finding. Reconciliation must produce the reversal working paper within the same month the CC is issued.
5. Composite supply items (car parking, PLC, floor-rise) not aligned to principal. These follow the principal supply’s tax status. If the flat is Schedule III, the car parking sold with the flat is also Schedule III — see the car parking charges GST treatment breakdown. If the flat is under-construction 5%, the car parking is also 5%. Misalignment where the car parking is invoiced at 18% (as a standalone service) after the flat is invoiced Schedule III is a common error surfaced by GSTR-1 review.
6. Forfeiture on cancellation before CC treated as non-taxable. Recent AARs apply 18% GST on forfeited earnest money as tolerating-an-act consideration under Section 15(2). The developer must issue a GST invoice for the forfeited portion. Reconciliation must isolate forfeiture events from full-refund cancellations and route the forfeited amount through the taxable output register — see the cancelled flat resold reconciliation treatment for the downstream re-book leg.
Continue reading — Real estate cluster
- TDS on property purchase above ₹50 lakh — Section 194-IA successor threshold
- Joint buyer property TDS aggregation under Section 194-IA successor
- NRI property seller TDS — Section 195 successor vs 194-IA successor
- Car parking charges real estate GST treatment
- Preferential location charges (PLC) real estate GST
- Maintenance deposit real estate non-revenue non-escrow treatment
- Cancelled flat resold reconciliation
- Real estate developer revenue recognition under Ind AS 115
- RERA escrow account reconciliation India
What automated reconciliation changes
Running the unit-level pre-CC / post-CC classification across a 340-unit ready-possession tower in transition quarter — with the CC-date evidence, consideration-flow evidence, composite-supply evidence, and Rule 42/43 ITC reversal working paper all tying to the same source data — is a multi-source data problem. A single mis-dated consideration receipt reclassifies a Schedule III sale into a 5% under-construction sale worth ₹4.75 lakh in GST wedge, and a delayed ITC reversal attracts Section 50 interest at 18%. Manual control on this surface is a 4-6 day per-quarter exercise dominated by spreadsheet reconciliation between the municipal portal CC dates, per-unit bank statement credits, and the ITC ledger. Purpose-built real estate reconciliation software India treats every consideration receipt as a dated event, ties it to the state municipal portal CC timestamp, produces per-unit Schedule III vs under-construction classification with evidence, and generates the CC-month Rule 42/43 reversal working paper on the same source data. TransactIG carries presets for the CC-date reconciliation, the unit-level GST classification register, and the ITC reversal working paper. Customer outcomes include match-rate improvement from 51% to 88%, with build in two-to-four weeks on AWS Mumbai (ISO 27001:2022). For the GST engine end-to-end, see reconciliation software India.
Content authored by practitioners with experience at Amazon India, Intuit QuickBooks, and the Tata Group. Meet the team →
- ▸ CGST Act 2017 — Schedule III Entry 5 — Sale of building where the entire consideration has been received after issuance of completion certificate or after first occupation, whichever is earlier — is treated as neither a supply of goods nor a supply of services.
- ▸ Notification 3/2019-Central Tax (Rate) dated 29 March 2019 — 5% CGST on non-affordable residential apartments under-construction and 1% CGST on affordable residential apartments under-construction, both without input tax credit, effective 1 April 2019.
- ▸ CGST Rules 2017 — Rule 42 and Rule 43 — Proportionate reversal of input tax credit on inputs, input services and capital goods where a portion of the output is used to make exempt supplies — including deemed exempt supplies under Schedule III such as post-CC flat sales.
- ▸ CBIC FAQ on Real Estate Sector (dated 14 May 2019) — Guidance that completion certificate must be issued by the competent authority — municipal corporation, municipality, panchayat, or other competent authority under any law — and that first occupation is triggered by lawful possession, not booking.