If you run a business in Kenya, there is a good chance you have heard the acronym eTIMS thrown around in boardrooms, WhatsApp groups, and accountant meetings. You may have nodded along, made a mental note to “figure it out later,” and moved on. Later, unfortunately, is rapidly becoming now.

Effective January 1, 2026, the Kenya Revenue Authority (KRA) began validating every income and expense declared in tax returns against electronic invoice data. This is not a pilot programme, a proposed guideline, or something that only applies to large corporations. It applies to you — whether you run a SACCO in Nakuru, a manufacturing plant in Thika, an NGO in Kisumu, or a distribution company in Nairobi.

This article breaks down what eTIMS is, why it matters right now, what happens if you are not compliant, and — most importantly — how to integrate it properly into your existing business systems so that compliance becomes a competitive advantage rather than a compliance burden.

What Exactly Is eTIMS?

eTIMS stands for Electronic Tax Invoice Management System. It is a software-based platform introduced by KRA to digitise and streamline the tax invoicing process in Kenya. Launched in 2023 as an improvement to the older Tax Invoice Management System (TIMS), eTIMS allows businesses to generate and transmit tax invoices to KRA in real time — or near real time — using computers, tablets, smartphones, point-of-sale systems, and ERP platforms.

Each valid eTIMS invoice carries a unique QR code and invoice number that can be verified on the KRA iTax portal, creating a secure, auditable record of every business transaction. This eliminates handwritten receipts, unrecorded purchases, and informal supplier documentation that businesses have relied upon for decades.

Crucially, eTIMS is not limited to VAT-registered businesses. KRA’s guidance makes clear that all persons engaged in business are required to onboard eTIMS and issue electronic tax invoices — even those whose annual turnover falls below the KSh 5 million VAT registration threshold. If your business buys or sells anything, eTIMS concerns you.

The Deadline That Changed Everything

From January 1, 2026, KRA began automatically cross-checking every expense and income figure declared in tax returns against data from eTIMS, TIMS, withholding income tax records, and customs import records. The implication is direct and severe: any expense you claim that cannot be matched to a valid eTIMS invoice will be automatically disallowed.

Consider a practical example. Suppose your business pays KSh 600,000 per year in office rent. If your landlord does not issue eTIMS-compliant receipts that include your KRA PIN, KRA will reject that expense entirely. The KSh 600,000 will be treated as profit you did not spend, and you will be taxed on it. At the corporate tax rate of 30%, that translates to an additional KSh 180,000 in tax on a single expense item. Multiply that across multiple non-compliant suppliers, and the financial exposure becomes significant.

There are two critical deadlines businesses must keep in mind:

• April 30, 2026 — Deadline for businesses to file and settle tax balances for the year 2025.
• June 30, 2026 — Deadline for individual (PAYE) tax returns.

Late filing penalties remain steep: KSh 20,000 or five percent of the tax due (whichever is higher), plus interest accruing at one percent per month on unpaid balances. With KRA now actively sending compliance notices to businesses ahead of these deadlines, the window for a relaxed approach has closed.

What eTIMS Non-Compliance Costs You

Many businesses underestimate the cascading impact of eTIMS non-compliance. It is tempting to think of it as a documentation issue — a matter of chasing a few receipts. In reality, it touches every financial dimension of your operation.

• Disallowed deductions: Every legitimate expense without an eTIMS invoice becomes a taxable income item. For businesses with high operating costs, this can dramatically inflate the tax bill.
• Rejected VAT refunds: VAT-registered businesses that cannot produce eTIMS-compliant purchase invoices will find their input tax claims rejected, effectively paying full VAT on all purchases.
• Supplier risk: If a supplier fails to capture your PIN on their eTIMS system, your expense is automatically disallowed. The burden of verifying your entire supplier chain now rests with you.
• Audit exposure: Businesses with mismatched declared figures and eTIMS data will be flagged for review, inviting deeper KRA scrutiny and potential penalties for prior years.
• Tender and contract risk: A Tax Compliance Certificate (TCC) is required for most government and institutional tenders. Non-compliance with eTIMS jeopardizes your ability to obtain one.

The good news is that businesses can still deduct legitimate expenses even without an eTIMS receipt — but only if they scan the receipts and upload them to iTax with an accompanying schedule listing each supplier’s KRA PIN. This workaround is viable for low-volume transactions, but for businesses processing hundreds or thousands of transactions monthly, it is operationally impractical without a proper integrated system.

How eTIMS Integration Works: The Technical Picture

eTIMS is versatile by design. KRA has made it accessible across multiple device types and business sizes, offering several integration pathways:

1. The KRA Web Portal or Mobile App

For small businesses with low transaction volumes, KRA offers a straightforward web portal and mobile app. Invoices are created manually within the platform and transmitted to KRA directly. This approach is low-cost and easy to start, but becomes unmanageable as transaction volumes grow.

2. ERP System Integration

For medium and large businesses, the most efficient and sustainable path is integrating eTIMS directly with your Enterprise Resource Planning (ERP) system. This is where platforms like Microsoft Dynamics 365 Business Central become transformative. When your ERP is integrated with KRA’s eTIMS API, every sales invoice generated within your business system is automatically transmitted to KRA in real time. There is no double entry, no manual re-keying of data, and no risk of invoices being issued but not submitted.

The integration also means your VAT returns can be auto-populated from eTIMS data, significantly reducing the manual work involved in monthly filing and minimising the risk of errors.

3. POS System Integration

Retailers and businesses with high customer-facing transaction volumes can integrate eTIMS with their point-of-sale systems. This ensures that every sale at the counter automatically generates a KRA-compliant electronic receipt — no manual steps required by cashiers or finance teams.

Why ERP Integration Is the Smarter Long-Term Choice

Many businesses approach eTIMS as a compliance checkbox — something to do quickly and minimally. This mindset leads to fragmented, brittle setups that create more work over time. Businesses that instead treat eTIMS integration as part of a broader digital transformation investment gain several durable advantages:

• Real-time financial visibility: When your invoicing, inventory, procurement, and tax systems speak the same language, management gets an accurate, real-time picture of cash flow, tax liabilities, and financial performance.
• Faster VAT refunds: Clean, eTIMS-matched input tax data speeds up KRA’s refund processing, improving your working capital position.
• Audit readiness: An integrated system creates an unbroken, verifiable audit trail from every transaction to every tax return. KRA audits become a review exercise, not a crisis.
• Reduced operational costs: Automation eliminates the repetitive, error-prone manual tasks of data entry, receipt chasing, and reconciliation, freeing your finance team for higher-value work.
• Supplier accountability: An integrated system flags missing or non-compliant supplier invoices before they become a tax problem, giving your procurement team actionable intelligence.

As of December 2025, over 500,000 businesses and taxpayers had registered on eTIMS. That number reflects growing momentum — but registration is only the first step. The difference between registration and integration is the difference between technically ticking a box and operationally being ready for what the new tax environment demands.

How FanisiTech Helps You Get eTIMS-Ready

At FanisiTech, eTIMS integration is not a new addition to our service list — it is a capability we have embedded into how we implement and support Microsoft Dynamics 365 Business Central for Kenyan organisations. As a Certified Microsoft Partner, we understand both the technical architecture of eTIMS and the operational realities of businesses across manufacturing, distribution, academia, floriculture, dairy, NGOs, SACCOs, and the public sector.

Our eTIMS integration approach covers the full lifecycle:

• Assessment — We audit your current invoicing workflows, identify compliance gaps, and map your existing systems to KRA’s technical requirements.
• Integration design — We configure your Dynamics 365 Business Central environment to generate and transmit eTIMS-compliant invoices automatically, without disrupting your existing processes.
• Supplier chain alignment — We help you identify which suppliers are not yet eTIMS-compliant and design a proactive engagement process to protect your expense deductions.
• Team training — We train your finance and operations teams on the new workflows, ensuring the system is used correctly from day one.
• Ongoing support — KRA continues to evolve its digital tax infrastructure. We provide continuous support to keep your integration current as requirements change.

We use the Microsoft Sure Step Methodology to deliver structured, predictable implementations that minimise business disruption — because compliance should not cost you downtime.

The Bottom Line: Act Now, Not After the Deadline

The era of informal business documentation in Kenya is over. KRA has built the infrastructure to verify every shilling of income and every shilling of expense you declare — and it is actively using it. The businesses that respond early will find that eTIMS integration, done properly, is not a burden. It is a foundation for cleaner books, stronger compliance, faster refunds, and more intelligent financial decision-making.

The businesses that wait will face rejected expenses, inflated tax bills, compliance notices, and potentially disqualification from tenders and contracts. With the April 30 and June 30 deadlines approaching, there is no longer a comfortable gap between awareness and action.

If you are unsure where your business stands on eTIMS compliance, or if you are running a manual workaround that will not scale, reach out to FanisiTech today. We will assess your current setup, walk you through your options, and help you build a solution that keeps you compliant, competitive, and in control.

At FanisiTech Limited, we are committed to helping organizations unlock this potential and build intelligent, scalable, and future-ready digital ecosystems.

We work closely with your organization to ensure a successful ERP journey—from strategy to execution.

To find us, visit our website https://fanisitech.com/, call our offices (+254743313103), visit our main office [Office Number 718, 7th Floor, KU PLAZA, Haile Sallassie Avenue, Nairobi CBD], or email us on info@fanisitech.com to schedule a FREE DEMO. 

The opportunity is clear. The technology is ready.
The next move is yours.