When tax law changes or needs interpretation, the Kenya Revenue Authority tells taxpayers through several kinds of document. People often treat all of them as "the law" or ignore them as "just notices", and both are mistakes. Each type has a purpose and a different weight. Knowing the difference helps you decide which to rely on and when to seek something firmer. This guide is general; confirm the current position with KRA.

The law comes first

The starting point is always the Acts of Parliament, such as the Income Tax Act, the Value Added Tax Act and the Tax Procedures Act, and the regulations made under them. Everything else interprets or explains the law. If a notice or a note contradicts the law, the law prevails. When in doubt, read the actual section. How Finance Acts change your taxes and when they take effect explains how the law changes.

Public notices

A public notice is an announcement to taxpayers: a deadline, a system change, a new requirement, an amnesty or a warning about fraud. Notices are published on KRA's website and communication channels and are often reported in the press. They tell you what KRA plans or requires, but they do not create new law by themselves. Read them for dates and instructions, and check the underlying provision. Tax amnesty: penalties and interest, what to know shows how a notice can describe an amnesty set by the law.

Practice notes and guides

KRA issues guides and practice notes that explain how it applies a provision, often with examples. They are helpful for understanding the authority's approach, particularly on new rules such as e-invoicing; see eTIMS e-invoicing explained. They are not binding in the way the law is, and a court or tribunal is not bound by them. But they show what KRA officers are likely to do, and following them reduces the risk of a dispute.

Circulars and internal guidance

Some documents are directions to KRA staff on how to handle a matter. Where they are published, they show how the law will be applied in practice. Treat them like practice notes: informative but not conclusive.

Private and advance rulings

A ruling is a written decision from KRA on how a tax provision applies to your particular facts. You ask for it before you proceed with a transaction, describing the facts and the question. A private ruling gives you certainty on that matter if the facts you described are accurate and complete. Rulings are specific to the person who asked, so you cannot rely on someone else's. Ask your adviser whether a ruling is available and worthwhile for a significant transaction.

Court and tribunal decisions

When disputes go to the Tax Appeals Tribunal or the courts, the decisions explain how the law is interpreted. They can be influential, especially those of higher courts. How to object to a KRA assessment and appeal describes the route. A decision on one set of facts may not apply directly to yours, so read it carefully or ask a professional.

How to find them

Start with KRA's official website and its verified channels, where notices, guides and forms are published. Subscribe to alerts if offered, and keep your iTax email current; how to stay informed about KRA notices and system changes lists more tips. Beware of fake notices circulating on messaging apps, and verify any notice on the official site.

How to use them safely

Use public notices for dates and instructions. Use practice notes to understand KRA's approach. Use rulings for certainty on your own transaction. Always check the law behind them. When you rely on a document, save a copy with the date and the source in your records; the KRA correspondence and objections log is a good place to record what you received and how you acted.

When the documents seem to conflict

If a notice says one thing and the law another, or two documents disagree, write to KRA for clarification and keep the reply. Where the issue is significant, take professional advice. When to hire an accountant or tax agent lists the signs that you need help. The more you understand about the kinds of guidance, the better you can use them to stay compliant.

See also how to follow tax changes in Kenya, penalty and interest rates for late tax returns and payments and kenya tax changes timeline, plus the KRA filing and payment calendar.