Provisions: when they are tax-deductible
Provisions are among the most debated instruments in the dialogue between accounting and tax. On the balance sheet they serve to cover probable charges or losses whose amount or timing is not yet certain. On the tax side, however, not everything that is booked is automatically recognised: the tax authority examines case by case whether the provision is justified by business use. Understanding where the line lies avoids tax adjustments and disputes.
The basic principle
A provision is deductible when, as at the closing date, there is a concrete and probable risk whose cause lies in an event that has already occurred during the financial year. The rationale is that of economic accrual: the charge must be attributed to the year that generated it, not to the year in which it will materialise financially.
From this follow the three requirements that cantonal authorities apply consistently:
- Origin in the financial year: the triggering event must have arisen by the balance-sheet date.
- Probability: the risk must be concrete, not a mere theoretical hypothesis or a generic business risk.
- Reliable estimate: the amount must be quantifiable in a reasonable and documented manner.
If any one of these elements is missing, the provision remains valid for accounting purposes but is added back in the calculation of taxable profit.
The cases typically recognised
In Swiss practice, provisions are generally allowed for:
- Warranty obligations on products sold or work carried out, typically calculated as a percentage of the warranted turnover, based on the company’s historical experience.
- Legal proceedings and disputes in progress, when an unfavourable outcome is probable and the amount can be estimated.
- Risks on orders and work in progress that are expected to run at a loss.
- Disposal, remediation or restoration costs arising from obligations already incurred.
- Restructuring decided and communicated before the closing.
A particular case is the provision for research and development costs: several cantons allow, within defined limits, a flat-rate provision against future research mandates. The conditions and percentages vary, so it is worth checking the applicable cantonal practice before booking it.
What the tax authority does not accept
Provisions that do not cover a specific risk but effectively serve to smooth profit or to build hidden reserves beyond what is permitted are not deductible. These include:
- generic provisions “for future risks” without an identifiable triggering event;
- amounts that are manifestly oversized in relation to the actual risk;
- provisions for investments or expenses relating to future financial years;
- duplications of value adjustments already recorded on individual assets.
When a provision that is no longer justified is released, the corresponding amount becomes taxable again in the year of release. This is why the management of provisions must be viewed over several years: what is deducted today may generate taxable profit tomorrow.
Documentation: the real battleground
The difference between a recognised provision and one that is added back almost always lies in the quality of the documentation. A traceable calculation, reference to the event that generated the risk, historical warranty rates, legal opinions on disputes: these are the elements that hold up under review.
It is useful to maintain a movement table showing, for each provision, the opening balance, the provisions for the year, the utilisations and the releases. This makes it immediately possible to check consistency between the balance sheet and the tax return and reduces the risk of adjustments.
In summary
Provisions are deductible when they cover a real risk, originating in the financial year and reliably estimable. Anything that exceeds this perimeter risks being added back. The key is to distinguish the technical provision, tied to a concrete fact, from the discretionary reserve.
The assessment always depends on the specific case and on the practice of the canton of domicile. SIH ONE supports businesses and companies in the tax qualification of provisions and in preparing the supporting documentation. Discover our tax support.