Ready stock carries a sticker premium, but GST closes about a third of it: 5 percent applies to under construction and nil once an occupancy certificate is issued. On a Rs 2 crore purchase a 15 percent premium is really about 10 percent all in. This covers the four failure modes worth scoring, what registration actually protects, and why an unusually generous payment plan is a question rather than a benefit.
Written by Mansi Joshi, Marketing Intelligence Lead, ZYN33 Investment Desk. Reviewed by Ritesh Arora, Founder, ZYN33 and Strata Capital Holdings, Gurugram. Advising on Gurugram residential capital allocation since 2023, with mandates ranging from Rs 3 Cr to Rs 50 Cr. Published 22 July 2026. Last reviewed 21 September 2026.
Disclosure: ZYN33 distributes residential projects in Gurugram and is paid a transaction fee when a purchase completes, including on projects we discuss with you. We do not give tax advice. This post is general information. Take it to your chartered accountant.
A 15 percent sticker premium on ready stock is really about 10 percent all in. GST closes a third of the gap before you price any risk at all.
That is the first thing to fix in any comparison of under construction vs ready to move. The headline premium is what buyers argue about, and it is not the number that leaves your account. Here is the arithmetic, then the four failure modes worth scoring.
Smaller than the sticker, because GST applies to one side and not the other.
|
On a Rs 2 Cr under construction unit |
Under construction |
Ready, 15 percent premium |
|
Ticket |
Rs 2.00 Cr |
Rs 2.30 Cr |
|
GST at 5 percent |
Rs 10.0 L |
Nil |
|
Stamp duty, male buyer |
Rs 14.0 L |
Rs 16.1 L |
|
All in |
Rs 2.25 Cr |
Rs 2.47 Cr |
|
Real gap |
Rs 22.1 lakh, or 9.8 percent |
|
At a 20 percent sticker premium the real gap is Rs 32.8 lakh, or 14.6 percent. Either way, GST removes roughly a third of the apparent difference.
That matters because the discount is the whole reason to accept execution risk. Price it after tax, not before, and run it on the specific units you are comparing. The honest ROI maths works the full entry stack.
Four things, and knowing which four tells you what is still on you.
The promoter must file a completion date, which binds under Section 18. At least 70 percent of collections must sit in a separate project account. That is the mechanism that stopped funds moving from one project to buy land for another. Progress must be reported quarterly. And Section 14(3) gives a five year defect liability from possession.
Check the HARERA registration at haryanarera.gov.in. Registration is required only above 500 square metres or more than eight units, so smaller builder floors may have no record. There is one authority with separate Gurugram and Panchkula benches, and hrera.in and hrera.org.in are not government domains.
What registration does not do is monitor construction or guarantee completion. It gives you disclosure and a remedy, which RERA Haryana benefits sets out in detail.
Developer solvency, compliance, construction stage and your own cash flow. Each has an observable signal.
|
Failure mode |
What to look at |
|
Developer runs out of money |
Projects actually delivered in Gurugram, pace on their other live sites, and whether they are discounting hard |
|
Approvals missing or contested |
Registration number, filed completion date, quarterly reports, and any extension or complaint on the portal |
|
Timeline extends past your plan |
Physical progress against the filed date, never the sales team's date |
|
You cannot service the milestones |
Your buffer, other EMIs, and whether you are also paying rent |
Missing progress reports across two consecutive quarters is the clearest single flag on the portal. It costs nothing to check and it is the thing most buyers never look at.
On the fourth row, note that a buyer failing to meet a final demand letter is a leverage failure rather than a project failure. The project delivered. The purchaser could not complete, and possession delays covers the opposite case.
Close to handover, where a real discount survives but most of the uncertainty is resolved.
Risk falls steeply as a project approaches completion, because the failure modes above mostly express themselves during the build. A project twelve to eighteen months out still trades below finished stock, but the developer has already funded and executed most of the work.
Early stage carries the deepest discount and the longest exposure. With a developer who has delivered repeatedly in Gurugram and a genuine cash buffer, that can work. With an unproven name, the discount is simply payment for risk most buyers never price correctly.
Sometimes. Treat an unusually generous one as a question rather than a gift.
Plans like 20:80 and 10:90 are marketed as buyer friendly, and occasionally they genuinely are. They are also used to move inventory that is not selling on its own merits, which tells you something about absorption in that project.
The test is simple. Ask what the same unit costs on a standard construction linked plan and compare the two totals. If the subvention price is higher, you are paying for the deferral. Decide whether that is worth it rather than accepting it as a concession.
Three situations where paying the premium is unambiguously correct. Four scenarios sort it.
Needing possession within a year, whether for a school admission or a relocation? The discount is irrelevant, because a slip is a plan failure rather than an inconvenience. Paying rent while carrying milestone payments? Model both outflows honestly before committing, since that double burden is what breaks most under construction purchases.
Unable to verify a developer's delivery record independently? You are pricing risk you cannot see. Backing a repeatedly delivered name twelve to eighteen months from handover with a real buffer? That is the strongest entry available. If this is not you, stop here.
Six things, and none of them come from the brochure.
Pull the registration number and the filed completion date from the portal, and confirm quarterly reports are current. Then confirm the developer has delivered at least two Gurugram projects, and walk one of their live sites to judge pace for yourself.
Third, get the carpet area from the filing and recompute the quoted rate on it, since brochures quote super built up. Fourth, compute the all in cost on both options including GST, as above. Fifth, read the payment schedule in the agreement rather than the marketing sheet. Sixth, confirm nothing above 10 percent is taken before a written agreement for sale, which is the statutory cap. The ten mistakes read covers the rest of the checklist.
Duration is the first Risk on under construction stock. More time means more exposure to supply chain, approval and funding shocks, and that exposure is what the discount pays you for.
Payment structure is second. A subvention plan may carry a price loading or an obligation that surfaces later, so read the terms rather than the headline.
Third, on distressed resale, title and outstanding dues, since a seller under pressure may disclose incompletely. Fourth, on finished stock, the premium itself, which is real money spent on certainty. Fifth, on both, buying before checking the carpet area, which changes what you own regardless of which side you pick.
Price based: after possession, once the finished premium applies to your unit rather than to the stock you were competing against.
Event based: completion and the occupancy certificate are the cleanest repricing moments. The asset changes category overnight and stops attracting GST for the next buyer.
Time based: avoid selling mid construction. That is when the buyer pool is thinnest, and you end up conceding the discount you bought the unit to capture. Hold beyond 24 months at minimum so gains are long term rather than taxed at slab.
Neither is better. The score decides, and the arithmetic comes before the score.
On under construction vs ready to move, compute the all in gap first. A 15 percent sticker premium is about Rs 22 lakh on a Rs 2 crore purchase, not Rs 30 lakh, because GST applies only to the unfinished side. Then score the four failure modes. Buy finished if your timeline is fixed, your buffer is thin, or you cannot verify the builder. Buy under construction from a proven name twelve to eighteen months out with a buffer for a slip. Avoid early stage from an unproven developer entirely.
Weighing a discounted under construction unit against finished stock with a decision due in 60 to 90 days? Send both. We return the registration and filed completion date, and whether quarterly reports are current. The carpet area with rates recomputed on it comes with it, plus the all in cost of each including GST and duty.
Strata Capital Holdings tracks price band shifts, infrastructure timelines and inventory movement across Gurugram's corridors. ZYN33 brings that into every allocation conversation. We are paid a transaction fee when a purchase completes. That is why we would rather you check the portal than take our word for it.
GST on residential property: 5 percent without input tax credit on under construction units, nil once the occupancy certificate is issued
Stamp duty in Haryana: inside municipal limits 7 percent for a male buyer, 5 percent for a female buyer and 6 percent for joint registration. Outside municipal limits the rates are 5, 3 and 4 percent respectively. Registration adds about 1 percent of assessable value capped at Rs 50,000
All cost arithmetic is ZYN33 calculation on the rates stated in the body, at a Rs 2 crore under construction ticket and sticker premiums of 15 and 20 percent
Figures circulating for the share of Gurugram projects delayed before and after RERA, for current inventory overhang, and for the finished stock premium could not be traced to a published source and are not adopted here. Premium ranges in the arithmetic above are stated as assumptions for the reader to replace with their own comparables
Disclaimer
This article is general information about tax and property mechanics in India. It is not tax advice, investment advice or a recommendation to buy a specific property, and it does not account for your personal circumstances. Rates, thresholds and deadlines change. Verify every figure against the source listed above and take your liquidation plan to a qualified chartered accountant before you sell anything. ZYN33 distributes residential projects in Gurugram and is paid a transaction fee when a purchase completes. We do not act as your tax adviser or your adviser on the equity side.
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