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Understanding eTIMS: A Plain-Language Guide for Non-Accountants

eTIMS in plain words: it is KRA's way of seeing your invoices as you issue them, so tax reporting is built from real transactions rather than end-of-month guesswork.

By Karani Geoffrey, Founder & CEO, Upeosoft
In short

eTIMS is KRA's electronic tax invoice system. In plain terms, when you sell something, your invoice is sent to KRA and stamped as valid before your customer keeps it. It exists so KRA sees actual sales in real time, and so buyers have proof they can use to claim their expenses. Every serious business now needs it.

Key takeaways
  • eTIMS is KRA's system for making every invoice electronic and verified.
  • When you issue an invoice, KRA validates it and returns a control code and QR data.
  • It exists so tax is based on real transactions, not end-of-month estimates.
  • Customers increasingly need an eTIMS invoice to claim what they buy from you.
  • You do not have to be an accountant - the system handles the validation if it is integrated well.
  • The easiest path is eTIMS built into the software you already use to sell.

eTIMS in one sentence

Here is eTIMS with no jargon: when you sell something and make an invoice, that invoice is sent to KRA and stamped as valid before your customer keeps it. That is the whole idea. Everything else is detail.

Think of it like a receipt that KRA has already seen and approved. Instead of you telling KRA your total sales once a month and asking them to trust the figure, KRA sees each sale as it happens. eTIMS is simply the system that makes that possible.

Why KRA introduced it

For a long time, tax reporting relied on businesses summarising their own sales and submitting totals. That leaves a lot of room for figures to not match reality, whether by honest error or otherwise. KRA wanted to see the actual transactions, not just the end result.

eTIMS gives them that. By validating invoices at the point they are created, KRA builds its picture from real sales. For honest businesses this is not a threat - it just means the numbers you report and the numbers KRA has already line up, which is exactly what you want if you are ever reviewed.

What actually happens when you issue an invoice

The mechanics are simpler than they sound.

  • You create an invoice for a customer as part of your normal sale.
  • The invoice details are sent to KRA electronically.
  • KRA validates it and sends back a control code and QR data.
  • That validated invoice - with its stamp of authenticity - goes to your customer.
  • You keep the validated record; KRA already has its copy.

Why your customers care about this

Here is the part that hits your revenue: your customers increasingly need an eTIMS-validated invoice to claim what they bought from you as an expense. A plain invoice you simply typed up may not be accepted as proof for their own tax purposes.

So when a business customer asks for an eTIMS invoice and you cannot produce one, you risk losing the sale to a supplier who can. eTIMS is not only a compliance obligation you owe KRA - it is fast becoming a basic requirement for doing business with anyone who needs to account for their spending.

The mistake that makes eTIMS painful

The most common mistake is treating eTIMS as a separate chore - a portal or tool where someone re-types each sale after the fact. That is slow, easy to forget, and prone to mismatches between your books and what KRA has.

The issues follow predictably: sales get missed, figures do not reconcile, and staff resent the double work. eTIMS only feels heavy when it is bolted on as an extra step. When it is part of the system you already sell with, it disappears into the background where it belongs.

The easy way: build it into what you already use

The comfortable way to live with eTIMS is to have it integrated into your existing point of sale, ERP or billing software. Then issuing an invoice and validating it with KRA are one action. No double entry, no forgotten sales, no separate portal.

A good integration also handles the awkward bits for you - correct tax treatment on each item, proper credit notes for returns, and offline queuing so you keep trading when the internet drops. You get on with serving customers, and compliance takes care of itself.

How Upeosoft makes eTIMS effortless

At Upeosoft we build eTIMS into the systems you already run, so validated invoicing is just part of making a sale. We handle the technical side - the transmission, the control codes, the item classification, credit notes, and offline resilience for Kenyan connectivity - so you never have to think in accountant terms.

If eTIMS feels confusing or you are tired of keying sales twice, talk to Upeosoft. We will make compliance something that quietly happens in the background while you focus on your business.

Frequently asked questions

What does eTIMS stand for and what is it for?

eTIMS is the Electronic Tax Invoice Management System run by KRA. Its purpose is to make invoices electronic and verifiable, so that when you sell something, KRA sees a validated record of it. This helps ensure tax is based on actual sales and gives your customers proof they can use to support their own expense claims.

I'm not an accountant - is eTIMS too technical for me?

No. eTIMS sounds technical, but if it is properly integrated into your sales system, you barely touch it - you issue an invoice as normal and the validation happens automatically in the background. You do not need to understand the plumbing. The complexity is a job for your software and your integrator, not for you at the counter.

Do small businesses really need eTIMS?

The scope has widened well beyond large VAT-registered firms, and the practical pressure is even broader: your customers increasingly ask for an eTIMS invoice before they will pay, because they need it to claim the expense. So even if you feel small, being able to issue a validated invoice is becoming essential to keep winning business.

What is the control code and QR on an eTIMS invoice?

When KRA validates your invoice, it returns a control code and data that generates a QR code printed on the invoice. These act like a stamp of authenticity, showing the invoice was genuinely recorded with KRA. That is what makes it trustworthy proof for your customer and for tax purposes, unlike a plain invoice you simply typed up yourself.

What is the simplest way to comply with eTIMS?

The simplest way is to have eTIMS built directly into the software you already use to make sales - your point of sale, ERP or billing system - so validation happens automatically each time you invoice. That beats keying every sale separately into a standalone eTIMS tool, which is slow and easy to forget. Integration turns compliance into something you do not think about.

Karani Geoffrey
Karani Geoffrey
Founder & CEO, Upeosoft

Karani Geoffrey is the Founder & CEO of Upeosoft, a software and automation company rooted in Kenya. He builds custom software, AI systems, and production-grade ERPNext for businesses across East Africa, and writes about the Kenyan realities - eTIMS, M-Pesa, SHIF, unreliable internet and power - that make or break real systems.

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