12.5% without indexation or 20% with indexation: which is better for an old flat?
For flats acquired before 23 July 2024, the law lets resident sellers pay whichever of the two works out cheaper.
Quick answers
Short answers to the questions societies actually ask
One question, one clear answer, and the calculator that lets you check it against your own society's numbers.
These are short, practical answers to the redevelopment questions Mumbai housing society members and committees ask most often. Each one takes two minutes to read and ends with a free calculator so you can test the answer against your own plot, carpet area and offer — rather than relying on a general rule of thumb.
How to calculate the additional free area in your redevelopment offer
The extra area in a redevelopment offer is simple arithmetic, provided both carpet figures are measured on the same basis.
Carpet Area vs RERA Carpet in Tender Documents: Why It Matters
The area basis in a tender decides whether you are comparing offers fairly or being quietly short-changed.
Check Your Building's FSI Potential Before Inviting Bids
Knowing roughly what your plot can build is the difference between negotiating from facts and negotiating from hope.
How does CII 384 for FY 2026-27 change your indexed cost?
The Cost Inflation Index for FY 2026-27 is 384, and it still matters for one specific tax comparison.
Can you claim stamp duty and registration fees under Section 80C?
Stamp duty on a Mumbai flat usually swallows the whole Rs 1.5 lakh cap on its own. The real question is not whether you can claim it, but how much of the cap your other investments have already used up.
How to Compare Developer Tenders Before the Selection SGM
Three to five sealed offers on the table, and one recommendation to place before your members.
How to Compare Two Developer Offers With Different Corpus and Rent
When one developer offers more corpus and another offers more rent, the two figures only become comparable once you total them over the project duration.
Corpus fund distribution: flat-wise or carpet-area-wise split?
One of the most common disputes in a redevelopment is not how much corpus, but how it is divided.
How much does buying extra area from the builder really cost?
The rate the builder quotes is rarely the final figure you end up paying for extra area.
How to Evaluate Corpus Fund Offers in Redevelopment Bids
A bigger corpus figure is not always the better offer — here is the test that actually matters.
Do society members pay GST on extra area bought in redevelopment?
Extra area bought from the developer is a purchase of construction service, so GST follows it. Here is how the 1% and 5% rates work, what "affordable" really requires in MMR, and the completion-certificate point members most often get wrong.
How Much Rent Should Your Society Demand in the Tender?
Fix your transit rent figure before bids come in, not after — the tender sets the ceiling for every offer.
How much transit rent should you demand during redevelopment in Mumbai?
A simple, member-level guide to judging whether the transit rent on offer will really keep your family housed nearby.
Is the corpus fund received in redevelopment taxable income?
This is the single most-asked tax question in redevelopment. The Tribunal answer is reassuring; the practical answer is more careful. Here is both, without overstatement.
Is transit rent and hardship allowance from the builder taxable?
Every member vacating for redevelopment asks the same thing: do I pay tax on the monthly rent the developer pays me? On the decided cases the answer is no — but the position is not as settled as most articles make it sound, and one point can come back to you years later.
Joint buyers and the Rs 50 lakh TDS limit: per buyer or per flat?
Many joint buyers assume the Rs 50 lakh TDS threshold is tested on each buyer's share. It is not. The test is on the property, and since 1 October 2024 the law says so in plain words.
How do joint owners split capital gains when selling a Mumbai flat?
When a flat is sold in joint names, each owner is taxed separately, and the split follows money, not names.
How Big Is Your New Flat Really? RERA Carpet to Built-Up Math
Builders quote built-up and super built-up because the numbers look larger. Here is the plain arithmetic that converts any quoted figure back to RERA carpet area — and the one mistake almost everyone makes doing it.
RERA Carpet Area vs Builder Carpet Area: Convert It Yourself
"Carpet area" has one legal meaning and several marketing ones. Here is the statutory definition, and how to work out which meaning your document is actually using.
Scoring Developer Bids: Rent, Corpus and Carpet Area Compared
A simple weighted score tells your society far more than the biggest headline offer ever will.
Selling your redeveloped flat: holding period and capital gains tax
What decides whether your sale is long-term, and how the tax on a redeveloped flat is worked out.
Is Your Society Eligible for Redevelopment? Pre-SGM Checks
Most redevelopment projects stall on paperwork nobody checked before the first meeting was called.
Stamp Duty on PAAA: What Members Actually Pay in Maharashtra
Most society members never learn that their PAAA can attract just Rs 100 in stamp duty.
TDS on flats bought in instalments: do you deduct 1% on every payment?
Under-construction flats are almost always paid for in stages. The law does not wait for the last cheque — it fixes the deduction to each payment, and the responsibility sits with the buyer throughout.
TDS on rent above Rs 50,000: does builder-paid transit rent count?
Members often ask whether TDS applies to transit rent. There are really two questions hiding inside one, and they have opposite answers. Getting them the wrong way round is the commonest mistake we see during redevelopment.
TDS on property under the Income-tax Act 2025: Section 393 changes
If you are buying a flat in Mumbai right now, the tax you must deduct has not changed. The section number and the forms have. Here is the clean cut-off between the old law and the new.
How to verify the carpet area of your new flat at possession
You have the keys. Before you sign the possession receipt, confirm the flat is the exact size your agreement promised.
How to Verify Extra Carpet Area Promised in a Tender Offer
A percentage on a tender letter means nothing until you check where that extra area is actually coming from.
How to Check if Your Society Is Eligible for Redevelopment Benefits
Your building's redevelopment benefits depend on which DCPR 2034 scheme it qualifies for, not on any common formula.
Want the longer version?
These quick answers sit alongside our detailed material: full redevelopment guides, government policies and GRs, judgments and case law, and frauds and how to avoid them. Every calculator referenced here is free and listed on the tools page.
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