The short answer
Whether a business in this trade has to issue eTIMS invoices follows from the rules that apply to any Kenyan business, not from the trade itself; the rules on who must comply are what decide it. What the trade changes is the shape of the job. Referring clinics and insurers are invoiced monthly against test logs, which makes accurate per-test records the basis of getting paid at all, separate from any tax requirement.
A diagnostic testing facility billing patients, clinics and insurers for tests.
How stock behaves in this trade
Reagents and consumables with expiry dates and cold-chain requirements, consumed per test, so cost per test is only knowable if reagent use is tracked against test volume. The usual lines are blood and diagnostic tests, imaging where offered, test panels and packages and referral testing for clinics.
What invoicing actually looks like here
Referring clinics and insurers are invoiced monthly against test logs, which makes accurate per-test records the basis of getting paid at all, separate from any tax requirement.
What tends to go wrong
- Reagent expiry and cold-chain loss
- Referral work invoiced late or not at all
- Insurance rejections on coding
- Test pricing not reflecting reagent cost
Customers here usually pay by m-pesa, cash, insurance billing and clinic referral accounts.
How customers pay in this trade
Payment in a laboratory usually comes through m-pesa, cash, insurance billing and clinic referral accounts. That mix decides how hard reconciliation is: every separate channel is a separate record that has to agree with the sales it paid for, and the trades that struggle most are the ones running three or four at once without anything joining them up.
Compliance angles that apply to this trade
- vat registration
- exempt and zero rated
- invoice contents
- customer pin
- insurance billing
What the rules say
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.
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.
What we are not stating here. Some of the specific requirements relating to this topic have not yet been verified against their primary source by our reviewer, so they are withheld from this page rather than stated from memory. That means you will not find a threshold, rate, deadline or penalty figure below. For those, check KRA directly. Everything else on this page explains how the mechanism works and is not affected.
Common questions
Does a laboratory need to issue a tax invoice for every sale?
Referring clinics and insurers are invoiced monthly against test logs, which makes accurate per-test records the basis of getting paid at all, separate from any tax requirement.
What usually goes wrong with records in a laboratory?
The recurring problems in this trade are reagent expiry and cold-chain loss; referral work invoiced late or not at all; insurance rejections on coding; test pricing not reflecting reagent cost. Each of them shows up in the records before it shows up in the bank balance.
How should a laboratory keep stock records?
Reagents and consumables with expiry dates and cold-chain requirements, consumed per test, so cost per test is only knowable if reagent use is tracked against test volume. Records that do not reflect that pattern will not tell you anything useful, whatever system produces them.
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.
More for laboratories
- Who must comply for laboratories
- Registering for eTIMS for laboratories
- Choosing an eTIMS channel for laboratories
- Issuing an eTIMS invoice for laboratories
- Credit and debit notes for laboratories
- Expenses and deductibility for laboratories
- Working offline for laboratories
- Records and audit for laboratories
- VAT registration for laboratories
- Turnover Tax for laboratories
- What eTIMS costs for laboratories
- Stock and inventory control for laboratories
- M-Pesa reconciliation for laboratories
- Staff and shrinkage for laboratories
- Choosing a POS system for laboratories
- Pricing and margin for laboratories
- Suppliers and purchase records for laboratories
Related trades
Sources
- officialeTIMS (Electronic Tax Invoice Management System) — Kenya Revenue Authority, checked 2026-09-18
- officialValue Added Tax Act, 2013 (Act No. 35 of 2013) — National Council for Law Reporting (Kenya Law), checked 2026-09-18
- officialKenya Revenue Authority — Kenya Revenue Authority, checked 2026-09-18