Last reviewed: 24 September 2026. Founders and promoters structuring a business transfer as a slump sale – selling an entire undertaking as a going concern for a lump sum, rather than itemising each asset – often assume the capital gains number is simply "sale price minus net worth," as the section's name suggests. Since the Finance Act 2021 amendment, that is only half the computation. If the undertaking's fair market value exceeds the agreed price, the FMV, not the contract price, becomes the taxable consideration.
Net worth: the starting point, not the whole answer
Section 50B computes net worth as the aggregate value of the undertaking's total assets minus the value of its liabilities as appearing in the books of account immediately before the transfer, subject to specific rules: depreciable assets are valued at their written-down value under the Income-tax Act (not book depreciation), assets on which full deduction has already been allowed (like certain scientific research assets) are taken at nil, and self-generated goodwill or other self-generated assets are excluded entirely – they carry no cost of acquisition and contribute nothing to net worth even if the buyer is clearly paying a premium for them.
This produces a net worth figure that is often meaningfully lower than what a business is actually worth, because internally generated brand value, customer relationships, and goodwill built organically (as opposed to acquired) simply do not appear in the net worth calculation at all.
The FMV amendment that changed the computation
Before Finance Act 2021, the "full value of consideration" for a slump sale was, in practice, whatever the transfer agreement stated as the lump sum price – leaving room to structure a low headline price while the real value of the undertaking (including its unrecorded goodwill) was understood between the parties. The amendment closed this by prescribing, under Rule 11UAE, a fair-market-value-based floor:
| Computation | What it measures |
|---|---|
| FMV of the capital asset (undertaking) transferred – Rule 11UAE(1) | Book value of assets with FMV substituted for specified categories (jewellery, artistic work, shares/securities, immovable property), minus liabilities |
| FMV of the consideration received or accruing – Rule 11UAE(2) | Aggregate fair market value of whatever was actually received – cash, shares, or other property – as consideration for the transfer |
| Full value of consideration for Section 50B | The higher of the two FMV figures above is deemed the full value of consideration, replacing the plain contract price where FMV exceeds it |
Worked example. A promoter agrees to sell a manufacturing undertaking as a going concern for ₹12 crore in cash. The undertaking's net worth per the books is ₹3 crore. If the FMV of the undertaking's assets under Rule 11UAE(1) works out to ₹15 crore – because, say, the immovable property component is substituted at its higher fair market value rather than book value – the full value of consideration used for the gain computation becomes ₹15 crore, not the agreed ₹12 crore. The capital gain is then ₹15 crore minus ₹3 crore net worth, not ₹12 crore minus ₹3 crore. Getting the Rule 11UAE valuation done before finalising the transaction price, not after, avoids this kind of gap surfacing only at assessment.
Long-term or short-term, and why indexation still doesn't apply
The gain's character depends on how long the undertaking, taken as a whole, was held – if held for more than 36 months, it is long-term capital gain; otherwise short-term. This is assessed at the level of the undertaking as a going concern, not asset-by-asset, which is itself one of the distinguishing features of a slump sale versus an itemised asset sale. However, Section 50B specifically excludes the benefit of indexation even where the gain is long-term – a point that surprises promoters used to indexation benefits on other long-held capital assets.
The valuation report requirement
Where Rule 11UAE's FMV computation applies, the taxpayer is required to obtain a valuation report from a registered valuer or merchant banker, as prescribed, and furnish it in the prescribed form along with other transaction particulars. This makes the valuation exercise a compliance requirement, not an optional benchmarking step – the report needs to actually exist and be filed correctly, not just be available if asked for. See our related notes on when a registered valuer is mandatory and on Rule 11UA share valuation, which operates on similar FMV-substitution logic for share transactions.
Common structuring mistakes
- Agreeing a lump sum price without first running the Rule 11UAE computation, then discovering the FMV floor pushes the taxable gain well above the commercially negotiated figure.
- Assuming self-generated goodwill reduces the taxable gain by inflating net worth – it does not, since self-generated goodwill has nil cost under the net worth rules.
- Treating a slump sale as automatically more tax-efficient than an itemised asset sale without comparing the actual numbers under both routes for the specific undertaking.
- Skipping the valuation report because the deal is between related parties or family entities – the FMV rule applies regardless of relationship, and related-party transfers often attract more scrutiny, not less.
Frequently asked questions
Can we still agree a slump sale price freely and rely on that as the taxable consideration?
You can commercially agree any price, but for tax purposes, if the FMV of the undertaking under Rule 11UAE exceeds that agreed price, the higher FMV is deemed the full value of consideration for computing capital gains under Section 50B.
Does the FMV rule apply to every slump sale, or only related-party transactions?
Rule 11UAE's FMV computation applies to slump sales generally, not only to related-party or family transfers. Assuming it only matters for related parties is a common and risky misconception.
Is indexation available if the undertaking was held for more than 5 years?
No. Section 50B specifically excludes indexation benefit on slump sale capital gains even where the gain qualifies as long-term based on the undertaking's holding period.
How is net worth different from the FMV used under Rule 11UAE?
Net worth is a book-value-based figure (with WDV for depreciable assets and nil for self-generated goodwill) used to compute the gain. The Rule 11UAE FMV is a separate, largely fair-value-based computation used only to test whether the actual consideration understates the undertaking's value.
Who is required to prepare the Rule 11UAE valuation report?
It is prepared by a registered valuer or merchant banker as prescribed, and is required to be obtained and furnished along with the relevant transaction particulars wherever the FMV computation applies.
Is a slump sale always better than selling individual assets for tax purposes?
Not necessarily. Each route has a different computation mechanism and different treatment for individual asset categories. The comparison needs to be run on the specific undertaking's numbers, not assumed in advance.
We run the Rule 11UAE valuation alongside deal structuring, before the price is finalised, not after.
Business & Startup Valuation Income Tax Filing Talk to usThis article summarises Section 50B and the Rule 11UAE valuation mechanism as understood on the date of review. General information, not advice on your specific facts – confirm details against the current forms/portal and consult us or your tax advisor before acting. CA Somesh Chandak & Associates, FRN 158694W.