What Documents Should I Use to Set Up RAG for My Business?

What Documents Should I Use to Set Up RAG for My Business?

You keep hearing that RAG will make your AI smarter. But nobody tells you what to actually feed it.

So you sit there wondering: do I upload everything? Just the FAQ? What about old contracts? What if I pick the wrong stuff and the AI still gives bad answers?

That confusion stops good RAG projects before they start.

The Plain Answer

Documents for RAG AI setup should be the same material you would hand a new employee to help them answer customer questions correctly. Think policies, FAQs, pricing sheets, and standard procedures. If a human would need to read it to answer accurately, your AI needs it too.

That is the whole idea. Nothing fancier than that.

The Reference Shelf Analogy

Picture hiring a new employee. Day one, you do not expect them to know everything by instinct. You give them a shelf of manuals. The refund policy. The pricing guide. The step-by-step process for handling complaints.

When a customer asks a tricky question, the employee does not guess. They walk to the shelf, pull the right manual, read the answer, and respond.

RAG works the same way. You are stocking a shelf for your AI. The AI pulls from that shelf before it answers. If the shelf is empty, the AI falls back on guessing. If the shelf is stocked with the right manuals, the AI answers like someone who actually works at your company.

Your job right now is simple: decide what goes on the shelf.

Start With What Customers Actually Ask

Before you touch any document, think about the questions that come up again and again. What does your support inbox look like? What do people ask in sales calls? What confuses new customers every single time?

Those repeated questions point you straight to the documents you need. If customers always ask about refunds, your refund policy belongs on the shelf. If they always ask how shipping works, that process document belongs there too.

This is the same logic behind training a new hire. You do not hand them the entire company archive on day one. You hand them what they will actually be asked about.

The Core Documents Most Businesses Need

Every business is different, but most companies find value in stocking a few categories first.

Your FAQ document matters because it already contains the exact questions and answers customers care about. It is often the single most useful document you have, because someone already did the work of identifying common confusion points.

Your policies matter too. Refund policies, cancellation policies, privacy policies. These are the documents where vague AI answers cause the most damage, because wrong information here can cost you money or trust.

Standard operating procedures, often called SOPs, matter because they explain how your business actually works. If a customer asks how long a repair takes or what steps are involved in onboarding, your SOP has the real answer, not a guessed one.

Pricing sheets matter because pricing mistakes are expensive and embarrassing. A generic AI might invent a plausible-sounding price. A RAG-enabled AI checks your actual pricing document first.

Product or service manuals matter if you sell anything with features, specifications, or usage instructions. Customers ask detailed questions, and your AI needs the real manual to answer them correctly.

What About Contracts and Internal Knowledge?

Contracts can be useful, but treat them carefully. They often contain sensitive terms that should not be exposed to every user asking the AI questions. If you include contract language, make sure access is limited to the right people.

Internal knowledge bases, the documents your team uses to train new staff or resolve tricky situations, are gold for RAG. These documents already explain the nuances that live in experienced employees' heads. Getting that knowledge onto the shelf means your AI benefits from years of institutional memory, not just the obvious stuff.

Quality Matters More Than Quantity

Here is where many business owners get it backwards. They think more documents automatically means a smarter AI. That is not true.

Think about the new employee again. If you hand them a messy shelf full of outdated manuals, contradictory memos, and half-finished drafts, they will struggle. They might read an old refund policy instead of the current one. They might quote a draft process that never got approved.

The same thing happens with RAG. Outdated or conflicting documents confuse the system. It might retrieve the wrong version and answer with confidence anyway, because remember, AI always sounds confident even when it is wrong.

Before uploading anything, ask yourself one simple question for each document: is this still accurate today? If the answer is no, update it first or leave it off the shelf.

Keep Documents Clear and Specific

Vague documents produce vague answers. If your FAQ says something like "contact us for details" instead of giving the actual detail, your AI has nothing useful to retrieve. It will either say the same vague thing or make something up to fill the gap.

The clearer and more specific your source documents are, the more accurate your AI's answers become. This is the same reason a good employee handbook spells out exact steps instead of general suggestions. Specificity removes guesswork, for humans and for AI.

Organize Before You Upload

A messy shelf slows down even a smart employee. The same applies here. Before loading documents into any RAG system, it helps to group them by topic. Policies together. Pricing together. Product manuals together.

This is less about fancy formatting and more about clarity. If a document title tells you exactly what is inside, it helps the retrieval process find the right material faster and more accurately.

A Simple Way to Start

You do not need a perfect document library to begin. Start small. Pick the three documents that would make the biggest difference right now if your AI could read them accurately.

For most businesses, that means an FAQ, a core policy document, and one key process guide. Get those three right before expanding. A small, accurate shelf beats a massive, messy one every time.

If you want the fuller picture of how RAG actually works behind the scenes, read What Is RAG? A Simple Guide to AI That Actually Knows Your Business.

FAQ

Can I use PDFs, Word docs, and spreadsheets together?

Yes. Most RAG setups can handle a mix of formats. What matters more than file type is accuracy and clarity inside the document itself.

Do I need to remove sensitive information before uploading?

Yes, always review documents for sensitive data first. Anything you would not want exposed to every user should be excluded or handled with restricted access.

How often should I update these documents?

Update them whenever the real policy or process changes. An outdated document on the shelf is worse than no document at all, because it creates confident, incorrect answers.

This is part of AI Without the Noise, from the AI Demystified course. Get the course or book a free AI audit.