Tax on Sale of a Business or Partnership Interest
Ramesh, similar to the entity comparison I have covered in my HUF vs individual vs firm guide, was retiring from the partnership firm he had co-run for 20 years, and assumed he would simply pay capital gains tax on whatever the firm paid him, the same way he would if he sold shares. Tax on sale of a business or partnership interest does not work that simply, and depending on the exact mechanism of your exit, the tax bill can land on you personally, on the firm itself, or be split between the two entirely differently than you expect.
Two Very Different Transactions Under One Heading
Selling an entire business as a going concern, a slump sale, follows one set of rules entirely. Exiting a partnership, whether by selling your interest to an incoming partner or retiring and taking a payout from the firm, follows a completely different set of rules, and even within partnership exits, which specific mechanism you use changes who actually owes the tax. Treating these as one undifferentiated topic is exactly where people get into trouble.
Selling an Entire Business: The Slump Sale Rules
Under Section 50B, a slump sale is the transfer of one or more business undertakings as a going concern, for a lump sum consideration, without individual values assigned to specific assets or liabilities. The capital gain is computed as the sale consideration minus the undertaking’s net worth, the aggregate book value of its assets minus its liabilities, explicitly ignoring any revaluation of those assets or liabilities. If the resulting net worth works out negative, the cost of acquisition is simply taken as nil, you cannot generate an artificially larger loss from a negative net worth figure. A mandatory chartered accountant’s report in Form 3CEA, certifying the net worth computation, must accompany the transaction.
The 36-Month Threshold That’s Different From Regular Capital Assets
Most capital assets use a 24-month threshold to separate short-term from long-term gains. A slump sale uses its own, longer 36-month threshold instead, based on how long the undertaking itself has been held, not any individual asset within it. Cross that 36-month mark and the gain is long-term, taxed at 12.5%. Fall short of it and the gain is short-term, taxed at your regular slab rate or corporate rate depending on the seller.
No Indexation, Even for Long-Term Gains
Section 50B explicitly denies indexation benefit on slump sale gains, even when the gain qualifies as long-term. This is a genuine exception to how long-term capital gains usually work for assets acquired before the recent indexation changes, since a slump sale’s net worth is already based on current book values rather than an inflation-adjusted historical cost, indexation would effectively double-count the adjustment.
Selling Your Partnership Interest: It Depends Entirely on Who Pays You
This is where the real complexity lives, and where Finance Act 2021 fundamentally changed the rules after a well-known loophole let firms and exiting partners avoid tax on revaluation gains almost entirely. The mechanism of your exit, not just the amount you receive, now determines who owes tax and how much.
Scenario One: An Incoming Partner Pays You Directly
If you sell your partnership interest directly to an incoming or existing partner, who pays you personally rather than the firm distributing money or assets to you, this is a straightforward capital gains transaction under the general provisions of Section 45. You, the outgoing partner, are taxed on the gain, calculated as what you received minus your cost of acquisition, generally your capital account balance. Sections 45(4) and 9B, covered next, simply do not apply here, since the firm itself is not involved in the payment at all.
Scenario Two: The Firm Pays You Money or Assets on Retirement
Retire from the firm and take a payout from the firm itself, rather than from an incoming partner, and the tax picture shifts entirely away from you and onto the firm. Under Section 45(4), if the money or assets you receive exceed the balance standing in your capital account, calculated without factoring in any revaluation the firm may have done, the excess is taxed as capital gains in the hands of the firm, not in your hands as the retiring partner. If what you receive includes an actual capital asset rather than just cash, Section 9B separately treats this as a deemed transfer by the firm at fair market value, again taxed in the firm’s hands, based on that asset’s FMV minus its own indexed cost. In some cases, both provisions apply to the same transaction, creating tax in the firm’s hands under two separate computations for what is, from your perspective, a single retirement payout.
Why This Reform Happened in 2021
Before Finance Act 2021, firms routinely revalued assets just before a partner’s retirement, paid the retiring partner an amount reflecting that inflated value, and courts had held this revaluation-driven payout largely escaped capital gains tax entirely, since no clean “transfer” appeared to have occurred in the traditional sense. Section 45(4) was rewritten and Section 9B introduced specifically to close this, and both provisions now explicitly ignore revaluation when calculating a partner’s capital account balance for this purpose, precisely to stop the same planning technique from working again.
The Dual Taxation Risk When Both Sections Apply Together
A particularly complex situation arises when a retiring partner takes both a capital asset and cash exceeding their capital balance in the same exit. Section 9B taxes the firm first, on the deemed transfer of that specific asset at fair market value minus its indexed cost. Section 45(4) can then separately tax the firm again, on any additional value the partner received, in money or assets combined, beyond their original capital account balance. These two computations run independently, which means the same underlying exit event can generate two separate capital gains calculations in the firm’s hands, not one, a genuine compounding effect that makes careful structuring of a retirement payout worth professional attention rather than an informal handshake agreement on the numbers.
What Happens to the Firm’s Future Tax Position After Paying This
There is a partial offset built into the system worth knowing. Once the firm has paid tax under Section 45(4) on the value attributed to a retiring partner, that same amount is treated as already taxed, so if the firm later sells the underlying asset that generated this attributed value, the amount already taxed is excluded from the sale consideration when computing that future capital gain. This prevents the same increase in value from being taxed twice within the firm’s own hands across two separate events, even though the retiring partner and the firm can still each face their own separate tax exposure from the same reconstitution.
Tax on Sale of a Business or Partnership Interest at a Glance
| Transaction | Who Is Taxed | Key Rule |
|---|---|---|
| Slump sale, entire business | The seller | Section 50B, net worth as cost, 36-month LTCG threshold, no indexation |
| Partner sells interest to incoming partner directly | The outgoing partner | Ordinary Section 45 capital gains, cost = capital account |
| Firm pays retiring partner in cash, exceeding capital balance | The firm | Section 45(4), revaluation ignored |
| Firm distributes a capital asset to retiring partner | The firm | Section 9B, deemed transfer at FMV |
Conclusion
Tax on sale of a business or partnership interest genuinely depends on the specific mechanism used, not just the amount changing hands. A slump sale follows Section 50B’s own net worth and 36-month rules. Selling your partnership stake to an incoming partner taxes you personally under ordinary capital gains rules. Retiring and taking a payout from the firm itself shifts that tax onto the firm under Section 45(4) and Section 9B instead. Before structuring any business or partnership exit, it is worth working through which of these routes actually applies, since the identical economic outcome can create very different tax bills for very different people. For the broader capital gains framework this sits within, see my capital gains tax FY 2026-27 guide.
Frequently Asked Questions
Does a slump sale need to be an entire company, or can it be one division?
It can be one or more undertakings or divisions, not necessarily the entire business, as long as that specific undertaking is transferred as a complete, functioning going concern for a lump sum, without individual assets or liabilities being separately priced.
Can a firm and a retiring partner agree in advance on who bears the tax under Section 45(4)?
The statutory incidence of tax under Section 45(4) falls on the firm regardless of any private agreement, though partners can certainly negotiate the commercial terms of the payout, including who economically bears the cost, as part of their own retirement settlement, separate from who is legally liable to the tax department.
Does this apply the same way to an LLP as to a traditional partnership firm?
Yes, Sections 45(4) and 9B apply to specified entities including LLPs, AOPs, and BOIs, not just traditional partnership firms, so a partner exiting an LLP faces the same mechanism-dependent tax analysis covered here.
Is there any way to avoid the firm being taxed under Section 45(4) on a retiring partner’s payout?
Structuring the exit so an incoming partner pays the retiring partner directly, rather than the firm distributing money or assets, avoids Section 45(4) and Section 9B entirely, shifting the tax instead to ordinary capital gains in the retiring partner’s own hands, as covered in the first scenario above. Which structure is actually preferable depends on the specific parties’ tax positions and should be worked through carefully before the exit is finalised.
Does a slump sale require the buyer to also take on the undertaking’s liabilities?
Typically yes, since the definition of a going concern generally means the buyer steps into the undertaking as it stands, assets and liabilities together, which is also exactly why net worth, assets minus liabilities, rather than gross asset value, is used as the cost of acquisition for the seller’s capital gains computation.
