By Victoria Mokaya, Senior Associate - Tax
A recent decision of the Tax Appeals Tribunal has provided an important reminder to taxpayers on the statutory window for claiming input VAT and more importantly, the limits of relying on an amended VAT return to correct an omission.
In Coca-Cola Beverages Limited v Commissioner of Domestic Taxes, Tax Appeal No. E146 of 2026, the Tribunal considered whether input VAT of KES 69.76 million, incurred in January 2025, could validly be introduced through an amended July 2025 VAT return filed on 20 August 2025. The Tribunal ultimately upheld the Commissioner’s rejection of the claim.
The issue
Coca-Cola had incurred input VAT on taxable supplies in January 2025. However, the input VAT was inadvertently omitted from its original July 2025 VAT return.
The taxpayer subsequently amended the July return on 20 August 2025, being the statutory filing date for the July VAT return and introduced the January input VAT claim.
The Commissioner rejected the amendment on the basis that the six-month period under section 17(2) of the VAT Act had already expired on 31 July 2025. Coca-Cola challenged that position before the Tribunal.
At the heart of the dispute was therefore a deceptively simple question: does the six-month period under section 17(2) run to the end of the sixth tax period or does it effectively extend to the statutory filing date of the return for that sixth month?
The taxpayer's position
Coca-Cola's argument was not without logic.
Section 17(2) provides that input tax is allowable for deduction within six months after the end of the tax period in which the supply or importation occurred.
For a January 2025 supply, the taxpayer argued that the six-month period extended through the July 2025 tax period. Since the July return was lawfully due for filing on 20 August 2025, the taxpayer maintained that an amendment made on that date remained connected to the July tax period and therefore fell within the statutory window.
The taxpayer also relied on previous decisions, including Highlands Mineral Water Limited v Commissioner of Domestic Taxes and Trans Africa Motors Limited v Commissioner of Domestic Taxes, to support the proposition that the substantive right to deduct input VAT should not be confused with the mechanics or timing of filing a VAT return.
There was also an argument based on the fact that the amended return had been accepted by i-Tax. Coca-Cola contended that the system's acceptance of the January invoices gave rise to a legitimate expectation that the claim had passed the applicable statutory checks.
The Tribunal's approach
The Tribunal took a strict approach to the statutory timeline.
It first identified 31 July 2025 as the end of the six-month period for input VAT arising from supplies made in January 2025. It then distinguished between the tax period to which a return relates and the date on which that return is actually filed.
The fact that the July 2025 VAT return was due on 20 August 2025 did not, in the Tribunal's view, extend the six-month period under section 17(2).
But there is a particularly important aspect of the decision that taxpayers should take note of.
The Tribunal did not treat the amendment itself as the problem. Rather, it focused on what the amendment was doing.
The January input VAT had been completely omitted from the original July return. It was therefore being introduced for the first time through the amendment filed on 20 August.
The Tribunal contrasted this with a situation where the input VAT had already been included in the July return but had subsequently been incorrectly recorded. In that circumstance, an amendment could potentially operate as a correction of an existing claim. Here, however, the amendment was being used to make a new input VAT claim after the statutory six-month window had expired.
Why the distinction matters
This distinction is likely to be the most practically significant aspect of the decision.
An amended VAT return should not automatically be viewed as a mechanism for extending a substantive statutory deadline.
Where an input VAT claim is omitted entirely, the subsequent amendment does not necessarily revive the taxpayer's right to make that claim. The underlying entitlement must still be exercised within the period prescribed by section 17(2).
In other words, the ability to amend a return and the ability to make an input VAT claim are not necessarily the same thing.
The Tribunal's decision makes this particularly clear: although the July return could itself be amended after 31 July, that procedural ability did not extend the substantive six-month period for claiming input VAT.
A compliance lesson for taxpayers
The decision reinforces the importance of robust VAT reconciliation processes.
For businesses with significant volumes of transactions, an omitted input VAT claim may appear capable of being corrected through a subsequent amendment. Following this decision, however, taxpayers should be cautious about assuming that the amendment mechanism can cure the expiry of the six-month statutory window.
The practical question should therefore not simply be:
"Can we still amend the return?"
It should also be:
"Was the input VAT claim itself made within the statutory period?"
That distinction can become particularly important where substantial amounts of input VAT are involved.
Looking beyond the KES 69.76 million claim
The Coca-Cola decision also illustrates a broader point about VAT administration.
The VAT system is built around the deduction of input tax against output tax. However, that substantive entitlement operates within statutory conditions and timelines. Once a limitation period has been prescribed, taxpayers need to ensure that their compliance processes capture the claim before the deadline rather than relying on the ability to amend a return after the fact.
For taxpayers, the lesson is therefore fairly straightforward:
An amendment may correct a return but it should not be assumed to extend the statutory period within which an input VAT claim must be made.
The distinction drawn by the Tribunal between correcting an existing claim and introducing a new claim through an amendment is one that VAT teams should consider carefully when reviewing historical omissions.
The appeal was ultimately dismissed, the Commissioner's Objection Decision upheld, and each party was ordered to bear its own costs.
For VAT compliance purposes, six months should be treated as six months not six months plus the filing period for the return.