In every acquisition of an intangible-heavy business, there is a source of value that many buyers overlook and most sellers fail to position: the tax amortisation benefit (TAB). It is not complex. It is not speculative. It is the present value of the future tax savings arising from the deductible amortisation of acquired intangible assets, where the deal gives the buyer a tax basis in them. And in a typical technology or IP-heavy acquisition, it can represent 15-25% of the intangible asset value — real money that directly affects returns.
During my career in structured finance at NM Rothschild & Sons, I learned that the most significant value in complex transactions often sits in the tax structure rather than the headline economics. The tax amortisation benefit is a perfect illustration of this principle: it is straightforward to calculate, material in magnitude, and consistently underexploited.
The tax amortisation benefit (TAB) is the present value of tax savings from deducting the amortisation of acquired intangible assets. It can represent 15-25% of intangible asset fair value and should be a standard component of every acquisition valuation model. Fair values include it as a market-participant assumption; the actual buyer gets the saving only where the deal structure gives it a tax basis.
When a company acquires another business, the purchase price is allocated across the acquired assets under IFRS 3 or ASC 805. The identifiable intangible assets — customer relationships, technology, brand, patents — are recognised at fair value. In many jurisdictions, intangible assets bought in an asset purchase can be amortised for tax purposes, creating annual tax deductions that reduce the acquirer's tax liability over the amortisation period. In a share purchase the target keeps its own tax basis and the buyer gets no deduction on the price paid, although a fair value still includes a TAB because it assumes a market participant buying the asset itself.
The TAB is simply the present value of those future tax deductions.
The calculation is straightforward once the inputs are known.
The TAB for a single intangible asset is:
TAB = Fair Value x Tax Rate x Amortisation Factor
Where the amortisation factor is the present value of the annual amortisation deductions over the statutory amortisation period, discounted at the post-tax cost of capital.
For a straight-line amortisation schedule:
Amortisation Factor = (1/n) x [(1 - (1 + r)^-n) / r]
Where n is the amortisation period in years and r is the post-tax discount rate.
A UK acquirer purchases a technology company and identifies £20M in customer relationship intangible assets. Since April 2019, UK relief for customer relationships bought with a business is available only if qualifying IP is bought in the same deal, at a fixed 6.5% of cost a year, on no more than six times the cost of that IP. Assuming relief is available, with a 25% corporation tax rate and an 8% discount rate, the TAB is approximately £2.8M — about 14% of the intangible asset's fair value. This £2.8M in present-value tax savings is real cash that flows to the acquirer over the amortisation period.
Consider a £100M acquisition where purchase price allocation identifies the following intangible assets:
| Intangible Asset | Fair Value | Tax Amortisation Period | Tax Rate | TAB Factor | TAB Value |
|---|---|---|---|---|---|
| Customer relationships | £30M | 6.5% of cost a year (~15.4 years; needs qualifying IP) | 25% | 14.1% | £4.23M |
| Proprietary technology | £20M | 10 years (follows the accounts) | 25% | 16.8% | £3.36M |
| Brand/trademarks (registered) | £10M | 4% fixed-rate election (25 years) | 25% | 10.7% | £1.07M |
| Patents | £8M | Patent life (12 years) | 25% | 15.7% | £1.26M |
| Goodwill (including assembled workforce) | £32M | 6.5% of cost a year (~15.4 years; needs qualifying IP) | 25% | 14.1% | £4.51M |
| Total | £100M | £14.4M |
Factors use the formula above with an 8% post-tax discount rate, and assume an asset purchase in which the technology and patents are the qualifying IP. The assembled workforce is not an identifiable intangible asset (IFRS 3.B37), so it sits in goodwill. The total TAB of about £14.4M is about 14% of the total purchase price; for a PE fund targeting a 20% IRR, that is most of a year's target return.
The TAB varies dramatically by jurisdiction because the tax rules governing intangible asset amortisation differ significantly.
| Jurisdiction | Corporate Tax Rate | Goodwill Deductible? (asset deal) | Amortisation Method | Period | TAB Factor on Goodwill |
|---|---|---|---|---|---|
| United States | 21% federal (~25.6% with state taxes) | Yes, in an asset deal or under a 338(h)(10), 338(g) or 336(e) election | Straight-line (Section 197) | 15 years | ~12% (federal only) to ~15% (with state) |
| United Kingdom | 25% | Only if bought with qualifying IP (since April 2019) | Fixed 6.5% of cost a year, on the lower of cost and six times the qualifying IP cost | ~15.4 years | ~14% where relief is available |
| Germany | ~30% (corporate tax, solidarity surcharge and trade tax; 32-33% in some cities) | Yes | Straight-line | 15 years | |
| France | 25.83% (higher for the largest groups) | Only for goodwill acquired between 1 January 2022 and 31 December 2029, and not from a related company | Follows the amortisation in the accounts | Useful life booked in the accounts, or 10 years if it cannot be reliably determined (no relief if the accounts treat it as having an unlimited life) | ~17% (10 years) within that window; nil otherwise |
| Netherlands | 25.8% | Yes | Straight-line, at most 10% of cost a year | At least 10 years | ~17% (10 years) |
| Italy | 27.9% (IRES 24% + IRAP 3.9%) | Yes, for IRES and IRAP | Straight-line, at most 1/18 a year | 18 years | ~15% |
| Singapore | 17% | No (Section 19B covers IP rights, not goodwill) | Writing-down allowance for acquired IP rights only | 5, 10 or 15 years (elected) | Nil for goodwill (~14% for IP rights over 5 years) |
| Australia | 30% (25% for base-rate entities) | No (goodwill is a capital gains tax asset) | Only listed intangibles (patents, registered designs, copyright, in-house software) | Statutory lives (e.g. standard patent 20 years, software 5 years) | Nil for goodwill (~15% for a patent with its full 20-year life; more for an acquired patent, written off over its remaining years) |
| Japan | Yes, in a non-qualified business transfer | Straight-line, mandatory | 60 months (5 years) | ~24-25% |
Factors use the formula above with an 8% post-tax discount rate and legislated rates, and assume an asset deal. In a share deal the buyer generally gets no step-up, except under the US elections (or a section 754 election when buying a partnership interest), when buying an interest in a German partnership, or when an Australian buyer heading a tax-consolidated group resets the target's asset costs (depreciable intangibles are stepped up; goodwill gets a new capital gains cost base but still no deduction). Singapore's M&A allowance gives a capped deduction on share purchases until 2030.
Japan offers the highest TAB factor on goodwill, because goodwill acquired in a business transfer is written off over five years at an effective rate above 30%. Australia and Singapore allow no deduction for goodwill, the UK only where qualifying IP is bought with it, and France only for goodwill acquired between 2022 and 2029. The jurisdictional difference can swing the goodwill TAB from nil to about a quarter of its value — a material factor in cross-border deal structuring.
The TAB does not arise automatically. It depends on how the deal is structured.
The most fundamental structuring decision is whether the acquisition is an asset deal or a share deal.
In practice, most M&A transactions — particularly PE acquisitions — are structured as share deals for commercial and legal reasons. The buyer's own tax saving is then "lost" unless a tax election is available to treat the share deal as an asset deal for tax purposes. The TAB inside a PPA fair value is not: fair value reflects the tax amortisation a market participant buying the asset would obtain, whatever the actual deal structure.
In the US, Section 338(h)(10) allows a qualified stock purchase to be treated as an asset acquisition for tax purposes. Both buyer and seller must jointly elect, and the seller reports the transaction as if it sold assets (rather than shares). This creates a stepped-up tax basis in all assets, including goodwill and intangible assets, making the full TAB available.
The negotiation over 338(h)(10) is essentially a negotiation over the TAB: the buyer benefits from the stepped-up basis and future tax deductions, while the seller may face a higher immediate tax liability. The value of the TAB is typically shared between buyer and seller through a purchase price adjustment.
The UK operates a distinct regime for intangible assets created or acquired on or after 1 April 2002 (the corporate intangibles rules, Part 8, Corporation Tax Act 2009). In an asset purchase, most acquired intangibles get tax relief, generally following the amortisation in the accounts. Since April 2019, goodwill and customer-related intangibles (customer information and relationships, and unregistered trade marks) get relief only when bought as part of a business that includes qualifying IP such as patents, registered designs or copyright, at a fixed 6.5% of cost a year on no more than six times the cost of that IP. Those bought between 8 July 2015 and 31 March 2019 get relief only on realisation.
A share purchase is different: the intangibles stay in the target company with their existing tax basis, so the buyer gets no new relief on the price it pays, and the intangibles recognised in the consolidated PPA carry a deferred tax liability instead. The UK does not generally make the buyer's own TAB available in a share acquisition.
For PE firms, the TAB has a direct and material impact on fund returns where the deal gives the buyer a tax basis. In that case the tax savings from intangible asset amortisation flow to the portfolio company (and ultimately to the fund) as reduced tax payments — real cash that compounds over the holding period.
Consider a PE fund acquiring the trade and assets of a technology company (or a US target with a 338(h)(10) election) for £80M, with £50M allocated to tax-deductible intangible assets generating a TAB of £9M (18% TAB factor).
| Metric | Without TAB | With TAB |
|---|---|---|
| Acquisition price | £80M | £80M |
| Annual tax saving (first 5 years) | £0 | ~£900K |
| Cumulative tax savings (5-year hold) | £0 | ~£4.5M |
| Exit multiple improvement | None | Demonstrable tax efficiency attracts higher multiples |
| Effective acquisition cost | £80M | ~£75.5M (adjusted for PV of tax savings) |
The £4.5M in cumulative tax savings over a 5-year hold period — funded by deductions that cost nothing to obtain — represents approximately 6% of the acquisition price. On a £20M equity check, that is a 22.5% uplift to equity returns before any operational value creation.
Sophisticated PE firms include the TAB in their acquisition models as a standard component where the deal structure delivers it, adjusting the bid price upward by the value of the TAB. This means that in competitive auctions, understanding the TAB is not just an optimisation — it is a competitive necessity. Bidders who ignore the TAB systematically underbid and lose deals.
The allocation of purchase price between goodwill and identifiable intangible assets affects the TAB because different intangible asset categories may have different amortisation periods and treatment.
In an asset purchase, identifying more value in shorter-lived intangible assets (technology, order backlog) rather than longer-lived assets (customer relationships, brand) or goodwill accelerates the tax deductions and increases the present value of the TAB. In a UK share purchase the allocation changes the fair values and deferred tax in the consolidated accounts but not the buyer's tax deductions. However, the allocation must be supportable at fair value — aggressive allocations invite regulatory challenge.
Identifying and valuing each intangible asset for a defensible PPA is asset-level work, and it runs inside Opagio Intangibles: each identifiable intangible is valued separately, so less value is left in the goodwill residual that could be attributed to faster-amortising identifiable intangibles.
Work with tax advisers to structure the acquisition in the form that maximises the TAB. In the US, this may mean negotiating a 338(h)(10) election. In the UK, relief for the buyer needs an asset purchase, and goodwill and customer-related intangibles qualify only when bought with qualifying IP. In cross-border deals, consider which jurisdiction's intangible assets regime provides the most favourable treatment — and structure the IP holding accordingly, subject to transfer pricing and substance requirements.
Tax authorities scrutinise intangible asset valuations in PPA, and the tax treatment of intangible amortisation depends on the defensibility of the underlying valuation. Robust documentation of valuation methodologies, assumptions, and supporting data reduces audit risk and protects the TAB.
Ignoring the TAB in bid pricing. In competitive processes, the TAB should be factored into the acquisition model wherever the structure delivers it. A bidder who ignores £10M+ in TAB value will either underbid (losing the deal) or fail to capture value they paid for.
Treating all intangibles as goodwill. Lazy PPA that dumps value into goodwill misses the opportunity to allocate to identifiable intangibles with faster amortisation periods. Every pound allocated to identifiable intangibles rather than goodwill (in jurisdictions with different treatment, and where the deal gives the buyer a tax basis) may generate a higher TAB.
Failing to negotiate tax elections. In US transactions, the 338(h)(10) election requires joint agreement. Buyers who do not raise this in negotiations leave the TAB on the table.
Overlooking jurisdictional arbitrage. In cross-border acquisitions, the TAB can vary by 10-15 percentage points depending on which entity holds the intangible assets. Legitimate structuring to locate intangible assets in TAB-favourable jurisdictions — with genuine economic substance — is a planning opportunity.
The OECD BEPS framework, particularly Actions 8-10, requires that entities claiming intangible asset income have decision-making, risk management, and development capabilities sufficient to justify the allocation. Paper structures in low-substance jurisdictions will be challenged, and the TAB may be denied.
The TAB is not only an acquisition tool — it is also relevant at exit.
When a PE fund sells a portfolio company, the buyer will perform their own PPA and calculate their own TAB. Positioning the portfolio company's intangible assets for the buyer's PPA — comprehensive IP documentation, clean title, defensible valuations, revenue attribution data — enables the buyer to model a higher TAB, which supports a higher acquisition price.
The Questionnaire helps portfolio companies prepare for exit by systematically documenting their intangible asset base. The Calculator provides the quantitative framework for presenting intangible asset value to potential acquirers.
1. Calculate the TAB for all identifiable intangible assets and goodwill in the target jurisdiction.
2. Structure the deal to maximise deductibility (an asset deal, or a 338(h)(10) election in the US; in the UK, new relief for the buyer under the corporate intangibles rules needs an asset purchase).
3. Optimise PPA to allocate value to faster-amortising identifiable intangibles.
4. Include the TAB in the bid model — it is a competitive necessity in auctions.
5. Document valuations rigorously to protect deductions from tax authority challenge.
6. At exit, position the intangible asset documentation for the buyer's TAB calculation.
As intangible assets become an ever-larger share of corporate value, the TAB will become an increasingly important factor in M&A economics. Several developments are worth monitoring.
The OECD's Pillar Two global minimum tax (15% effective rate) may reduce the jurisdictional variation in TAB factors, as the benefit of locating intangible assets in low-tax jurisdictions diminishes. However, the amortisation period and method will still vary, maintaining some jurisdictional differentiation.
Goodwill amortisation is not returning for public companies: FASB removed the project from its agenda in June 2022 and the IASB decided in November 2022 to keep the impairment-only model, so the gap between book impairment and tax amortisation remains a planning point for acquirers. In July 2026 the FASB decided to pursue targeted improvements to the level at which, and how often, goodwill is tested for impairment; that does not reintroduce amortisation.
Standardised intangible asset valuation frameworks — including Opagio's approach — will make TAB calculation more routine and defensible, reducing the friction and uncertainty that currently limits its exploitation.
The TAB is not going away. It is becoming more important, more scrutinised, and more competitive. Companies and PE firms that systematise their TAB analysis will consistently outperform those that treat it as an afterthought. The PE due diligence academy covers TAB analysis as part of the broader intangible asset due diligence framework.
Tony Hillier is Chairman of Opagio. He holds an MA from Balliol College, Oxford and an MBA with distinction. Tony held executive board positions at NM Rothschild & Sons and GEC Finance, and a non-executive directorship at Financial Security Assurance in New York, where he specialised in structured finance, asset-backed securities, and cross-border tax-leveraged leasing. Meet the team.
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