How to Choose a POS System in Kenya (M-Pesa and eTIMS): 2026 Buyer's Guide

Short answer: choose a POS that takes M-Pesa at the till and reconciles it, issues KRA-compliant electronic tax invoices through eTIMS or TIMS, keeps stock accurate across branches, and keeps selling when the internet or power drops.

Check current rules: KRA's eTIMS is now the main electronic tax invoicing system, older ETR devices have been phased out in favour of TIMS and eTIMS, and buyers generally need valid eTIMS invoices to claim expenses. Rules change, so confirm your exact obligations and integration route with KRA or your accountant.

Disclosure: we install and support CompuLynx NEXX POS, so we are not a neutral party. The checklist below works on any vendor, including us.

1. What a Kenyan retailer actually needs

Requirement	What to look for
Tax invoicing	Every sale issues a KRA-compliant electronic tax invoice through eTIMS or TIMS, with the buyer's PIN where required and credit notes for returns.
M-Pesa payments	Till or paybill payments matched to the sale automatically, plus cash, card and split payments.
Inventory	Live stock, barcode scanning, stock takes, purchase orders, supplier records and low-stock alerts.
Multi-branch	Per-branch stock and sales, transfers between branches and central reporting.
Offline resilience	The ability to keep selling during outages and sync afterwards, including how offline sales reach KRA.
Users and audit	Cashier logins, permissions for voids and discounts, and a log of changes.
Reports	Daily sales, VAT at 16%, profit by product, cashier and branch, exportable for your accountant.
Hardware	Works with the receipt printers, scanners, cash drawers and tablets you already own.

2. Which type of system fits

Approach	Best for	Watch out for
Notebook and calculator	Very small shops.	Tax exposure, stock leakage, no records for lenders.
KRA eTIMS Lite and free tools	Micro traders.	No inventory or M-Pesa till reconciliation.
Cloud POS subscription	Shops that want simplicity.	Internet dependence and monthly fees.
Installed POS	Supermarkets and hardware stores that need speed.	Hardware, backups and local support must be sorted.
ERP with a POS module	Larger chains.	Complexity and cost.

3. 10 questions to ask every vendor

Can you demonstrate a sale that produces a valid KRA tax invoice, and a credit note for a return?
Which KRA integration route do you use, and who handles KRA updates?
Can you show an M-Pesa till payment being matched to the sale automatically?
What happens to sales and tax invoices when the internet is down?
How are stock, purchases and transfers between branches handled?
Can I control who gives discounts or voids sales, and is it logged?
Which of my existing printers and scanners will work?
What is the total year-one cost: licence, hardware, setup, training and support?
What are support hours and response times in writing?
Can you give references from two Kenyan retailers like mine?

4. Switching without disruption

Switch right after a month-end stock take.
Load products, prices and barcodes, and test them.
Send real test sales through tax invoicing before opening.
Train cashiers and supervisors, then go live at one branch first.
Run the old and new systems side by side for the first week.

Frequently asked questions

Does my POS have to be KRA-compliant?

KRA expects businesses to issue electronic tax invoices, and eTIMS is the main system. Your POS should transmit each sale as a compliant invoice, or you must issue it another approved way. Confirm your obligations with KRA or your accountant.

What is the difference between ETR, TIMS and eTIMS?

ETR devices were the older tax register regime. TIMS added real-time invoice transmission using approved devices, and eTIMS is KRA's software-based system that works through the portal, client software, mobile and system integration.

Can a POS take M-Pesa and reconcile automatically?

Yes, when the till or paybill confirms each payment to the system. Ask for a live test payment in the demo.

Will my POS work offline?

Good systems keep selling offline and sync later. Ask exactly how offline sales are invoiced and transmitted to KRA.

Can one system run several shops?

Yes, if it supports per-branch stock, transfers and consolidated reports. Test this with your own branch setup.

More buyer's guides

See CompuLynx NEXX running your kind of shop

Book a demo of CompuLynx NEXX POS, including M-Pesa and tax invoicing, then compare it against this checklist.

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Or call / WhatsApp +254 728 851 675 · eric@delights.co.ke