How Retailers Can Stay Compliant with Informal Suppliers using Reverse Invoicing
A practical guide to eTIMS compliance for supermarkets, distributors, and small retailers navigating Kenya's informal supply chains
Kenya’s retail sector is a study in contrasts. On one end, multinational supermarket chains run enterprise systems that talk to eTIMS in real time. On the other, market vendors and neighbourhood kiosks operate on cash, trust, and word of mouth. Between them sit distributors and wholesalers, moving goods from manufacturers to thousands of small outlets across the country.
This diversity is what makes eTIMS compliance in retail so complex — and why reverse invoicing has become one of the sector’s most practical compliance tools.
eTIMS Requirements
The Electronic Tax Invoice Management System (eTIMS) is KRA’s framework for capturing tax invoices electronically, in real time, for VAT and income tax purposes. Every business in the retail value chain — regardless of size — is required to issue eTIMS-compliant invoices for taxable supplies, and to hold eTIMS-compliant documentation to support any expense it wants to deduct. The obligation runs in both directions: what you sell, and what you buy to run your business.
That second half — supporting your own deductions with compliant documentation from your suppliers — is where retail runs into trouble, because the sector’s supply base is unusually fragmented.
Compliance At Each Tier of the Value Chain
Large supermarkets and retail chains typically run enterprise resource planning (ERP) systems capable of integrating directly with eTIMS, so their own invoicing is rarely the issue. Their real exposure sits one step back, with their suppliers. A chain sourcing fresh produce from smallholder farmers, or contracting casual labour for shelf-stocking and cleaning, depends on those suppliers being able to issue compliant invoices. When they can’t, the retailer loses the ability to claim input VAT on that purchase and to support the expense as a deduction for corporate income tax — a direct cost, even though the compliance gap originates with someone else.
Distributors and wholesalers occupy the middle tier, buying from manufacturers and selling on to a wide network of retailers, many of them small traders or kiosk operators. This position means they carry compliance obligations on both sides of their business: they need compliant invoices to support their own purchases from manufacturers, and they must issue compliant invoices for every onward sale to a retailer, however small.
Small kiosks, market vendors and informal retailers face the steepest climb. Many operate below the VAT registration threshold entirely, and have limited awareness of what eTIMS requires of them, or even that it applies to their operations. This tier is less a compliance risk to itself and more the root of the documentation gap that large retailers and distributors above them have to manage.
Three Structural Challenges Affecting Retailers
Three features of how the sector is organised make blanket compliance genuinely difficult, rather than simply a matter of enforcement:
Supplier diversity and informality. Retailers routinely source goods and services from informal traders, casual workers and small-scale producers who lack the capacity, systems or awareness to issue eTIMS-compliant invoices. Without that documentation, the retailer cannot support the corresponding expense deduction or input VAT claim, regardless of how legitimate the underlying transaction is.
High transaction volumes. Many retailers process a large number of small transactions daily, across many suppliers. Tracking eTIMS compliance manually across that volume — checking whether each supplier’s invoice actually qualifies — is impractical without system integration doing the work automatically.
Operational expenses beyond stock. Compliance thinking often focuses on goods for resale, but retailers carry significant recurrent costs in rent, security services, cleaning, waste removal, casual labour and equipment maintenance. Many of these services are provided by small, informal operators who sit outside the eTIMS net entirely, yet these are real, deductible business expenses if properly documented.
How Reverse Invoicing Addresses the Gap
The Tax Laws (Amendment) Act, 2024 introduced reverse invoicing as a direct response to this kind of structural mismatch: businesses that are otherwise compliant, transacting with suppliers who are not in a position to comply themselves. Reverse invoicing allows the purchasing entity — the retailer or distributor — to generate an eTIMS-compliant invoice on behalf of its supplier, with that supplier’s consent, at the point of transaction.
In practice, this means the retailer, not the informal supplier, carries the documentation burden. The supplier doesn’t need to register for eTIMS, learn the platform, or change how they operate. The retailer captures the transaction, generates the compliant invoice, and retains the documentation needed to support its own VAT and income tax position — while the supplier is simply paid as usual.
This mechanism maps closely onto real retail scenarios: a supermarket chain regularly transacting with fresh produce suppliers, casual workers or small-scale service providers can use reverse invoicing to generate compliant documentation for those payments without asking the supplier to navigate eTIMS independently. Distributors dealing with large networks of small retailers who may lack eTIMS capability can apply the same approach on their side of the chain.
Where this becomes operationally simple rather than an added task is through integration. By working with approved third-party integrators such as Digitax, retail businesses can embed eTIMS compliance and reverse invoicing functionality directly into their existing point-of-sale and payment systems, so that compliant documentation is generated automatically as part of the transaction, rather than as a separate administrative step afterward.
Reverse invoicing solves the immediate documentation problem, but it isn’t intended to be a permanent substitute for direct supplier compliance. It closes the gap today; it doesn’t close the gap for good. Retailers who rely on it exclusively remain dependent on generating invoices on their suppliers’ behalf indefinitely, which carries its own administrative load as supplier numbers grow.
The stronger position, particularly for retailers and distributors with large or repeat supplier bases, is to combine reverse invoicing with active supplier education — helping regular suppliers understand and eventually meet their own eTIMS obligations over time. This dual approach protects deductions in the short term while building a supply base that is progressively more self-sufficient on compliance, a position that becomes more valuable as KRA enforcement continues to tighten.
Key Takeaways
eTIMS obligations apply at every tier of the retail value chain, from national supermarket chains to informal vendors.
The biggest compliance exposure for large retailers is usually their suppliers’ documentation, not their own.
Reverse invoicing, introduced under the Tax Laws (Amendment) Act, 2024, lets a retailer generate a compliant invoice on a supplier’s behalf, with consent, without requiring the supplier to use eTIMS directly.
Integrated correctly into POS and payment systems, reverse invoicing can run as a background process rather than a manual task.
The most resilient long-term approach pairs reverse invoicing with progressive supplier education.
Ready to Implement Reverse Invoicing at Scale?
Digitax works with retailers, distributors and their suppliers to embed eTIMS compliance and reverse invoicing into everyday operations. Get in touch to find out how it fits your business.