The short answer
eTIMS Online is a browser channel with nothing installed and Buyer-initiated invoicing is a change to who raises the invoice rather than to what you install. The choice follows from how your business issues invoices: how many, how fast, and whether the connection holds while you do it.
Side by side
| eTIMS Online | Buyer-initiated invoicing | |
|---|---|---|
| Kind of thing | A web portal used in a browser, on whatever device has one. | An invoicing model rather than a piece of software: it changes who raises the document, not what you install. |
| Connection | Needs the connection up | Depends on setup |
| Invoice rhythm | One invoice at a time, typed | Per supply relationship |
eTIMS Online
The browser route. You sign in to the taxpayer portal and issue invoices from there, with nothing installed on the machine you are using. Invoices issued deliberately, one at a time, by someone who has a moment to do it. The pattern fits a service business or a wholesaler invoicing after the fact better than a shop invoicing at the till.
Buyer-initiated invoicing
An arrangement where the buyer raises the invoice rather than the seller. It exists because plenty of real supply relationships have a large buyer and a supplier with no system at all. The invoice originates with the party that has the system, which is the opposite of the usual direction.
How to choose between them
Our reading, not a rule. Nothing below is a statement of what KRA requires.
eTIMS Online gets awkward when
A counter under pressure: a browser form is slow when someone is waiting. Trading through an outage, because the portal needs the connection to be up. High invoice volume, where re-keying what the till already knows is duplicated work.
Buyer-initiated invoicing gets awkward when
Any relationship where the supplier can issue the invoice perfectly well, in which case this is a complication rather than a solution. A buyer not prepared to carry the record-keeping, because the burden moves with the document.
What the rules say
Stated by the publisher from the cited KRA material. Our reviewer has not yet re-checked it against the source, so confirm anything you are about to act on with KRA directly.
KRA identifies several categories of eTIMS solution, among them eTIMS Online, the eTIMS Client, eTIMS Lite, system-to-system integration, reverse invoicing and buyer-initiated invoicing. Which one suits a business depends on how it issues invoices rather than on what it sells.
KRA states that taxpayers can onboard themselves, and that registration comes before installing an eTIMS solution rather than after it.
Tax rules in Kenya change with each Finance Act and with regulations made during the year. Before acting on any figure, deadline or threshold, check the current position on KRA's own website.
This page explains how a requirement generally works. It is not tax advice, and it cannot account for the specifics of any one business. For a position you intend to rely on, confirm with KRA directly or with a registered tax agent.
Common questions
Which is better, eTIMS Online or Buyer-initiated invoicing?
Neither, as a general matter. They assume different invoicing patterns, and the one that suits a business follows from how many invoices it issues and how reliable its connection is.
When would eTIMS Online be the wrong choice?
A counter under pressure: a browser form is slow when someone is waiting.
How do I know this information is current?
Tax rules in Kenya change with each Finance Act and with regulations made during the year. Before acting on any figure, deadline or threshold, check the current position on KRA's own website.
Sources
- officialeTIMS (Electronic Tax Invoice Management System) — Kenya Revenue Authority, checked 2026-09-18
- officialeTIMS taxpayer portal — Kenya Revenue Authority, checked 2026-09-18
- officialKenya Revenue Authority — Kenya Revenue Authority, checked 2026-09-18