More detail
There is a common worry that using a POS will force you onto VAT or expose you to tax you were avoiding. Using compliant billing software does not change your registration status, it just keeps proper records.
What it does help with is meeting eTIMS rules, which keep widening. If you are unsure whether you must file, that is a question for KRA or your tax advisor, not something to guess at.
Related questions
Does using Veira put me on VAT?
Do non-VAT shops need eTIMS?
Veira gives Kenyan shops one calm app for selling, M-Pesa, KRA eTIMS and stock, with a free terminal. Book a demo and see it set up for your trade.