@the sage; The M-Pesa outlet would qualify for TOT...if this is the only line of income you have.
But the ask yourself whether the profit margin is greater than 30%. If not, you might end up paying higher tax through TOT than through normal Income Tax.
There is no VAT on agent's commissions from M-Pesa. So no need to worry about it.
Don't fear the tax man. Look out in the press for KRA Taxpayer Seminars. They are very educative.
Nothing is real unless it can be named; nothing has value unless it can be sold; money is worthless unless you spend it.