Economic Useful Life explained: this guide covers what it means, who it applies to, the step-by-step process, documents required, fees, due dates and penalties in India — so you can stay compliant with confidence and avoid costly mistakes.
Two clocks run on every intangible — one economic, one legal — and the asset dies when the first of them stops.
Finite or indefinite
Intangible assets could have a finite or indefinite life. Finite life will usually be established by law or a contract, technology, function or economic factors along with the pattern of replacement of the intangible asset to be valued.
And a warning against a common conflation: economic life of an intangible asset is not the same as the remaining useful life for tax or accounting purpose.
The shorter of two periods
The useful life is the shorter of the periods determined by these two factors:
- Economic Factors — economic factors determine the period over which future economic benefits will be received by the entity.
- Legal Factors — legal factors may restrict the period over which the entity controls access to these benefits.
The economic and legal factors shall be considered together as well as individually while determining the useful life of an intangible asset.
Consider a patented drug formulation. The legal clock is the patent term — say twelve years remaining. The economic clock is how long the formulation will actually earn, which may end sooner if a superior compound reaches the market in year six.
The useful life is six years, not twelve. Legal protection over an asset nobody wants produces no benefits.
Now reverse it. A brand may have economic life running indefinitely, but if the licence to use it expires in four years and is not renewable, the entity controls access to those benefits for four years only.
Hence the instruction to consider the factors together as well as individually. Assessed individually, each gives a period; assessed together, the shorter governs — and the interaction can shorten it further, as when a legal restriction accelerates economic obsolescence.
This is also why economic useful life differs from the tax or accounting life. Those are set by statute or policy; this one is set by the facts.
The ten-year presumption
Valuers should refer to Ind AS 28 which adopts a rebuttable presumption that useful life of an intangible, generally, should not be more than 10 years.
The consequence for the income approach is direct: while applying Income Approach towards Intangibles, Valuers should, generally, not apply a Terminal Value since that would imply an infinite life of the intangible.
A terminal value assumes cash flows continue forever. Applied to an intangible, it contradicts the presumption in the same model that relies on it — and it typically dominates the answer, since a perpetuity beyond the forecast horizon can exceed the discounted forecast itself.
When more than ten years is defensible
In certain cases, such as, where there is a legal right (license to operate Tolls, generate power etc.) the useful/economic life of the intangible can be higher than 10 years.
| Situation | Life | Why |
|---|---|---|
| Brand, customer list, technology | Generally not more than 10 years | The rebuttable presumption applies |
| Toll operating licence, power generation licence | Can exceed 10 years | A defined legal right runs for a defined longer term |
The presumption is rebuttable, not absolute — but rebutting it requires a legal right with a stated term, not an assertion that the brand will endure.
Common mistakes
- Applying a terminal value to an intangible in a discounted cash flow.
- Taking the legal term as the economic useful life without testing obsolescence.
- Using the tax amortisation period as the valuation life.
- Rebutting the ten-year presumption on brand strength rather than a legal right.