How to Write a Standard Operating Procedure (SOP) That Your Team Will Follow

Every growing business hits the same wall. The knowledge that keeps things running lives in a few people's heads, and when one of them is out sick, on vacation, or leaves, the work grinds to a halt or gets done wrong. A standard operating procedure is how you get that knowledge out of people's heads and into a form anyone on the team can follow.

In our work helping growing operations teams tighten up how they run, we see the same thing again and again: The problem is rarely a lack of effort, but instead that the how-to exists only as habit. And most SOPs written to fix that fail on arrival, ending up too long, too vague, or buried in a folder no one opens, so the team keeps working from memory anyway.

This guide will show you what a standard operating procedure is, how to write one step by step, and how to make sure yours gets used instead of ignored.

What Is a Standard Operating Procedure?

A standard operating procedure (SOP) is a documented, step-by-step set of instructions that describes how to complete a specific task the same way every time. It captures the who, what, and how of a recurring process so that anyone with the right training can perform it consistently, without guesswork and without depending on one person's memory.

The purpose of an SOP is repeatable, reliable results. When a task has a clear procedure, quality stops depending on who happens to be doing the work that day. New hires ramp faster, errors drop, and the business can hand off or scale a process without losing the knowledge of how it's done.

According to APQC, a nonprofit that sets widely used process standards, a process requires standards for repeatable performance, and an SOP is how you define those standards for a single task.

SOPs are most valuable for tasks that are repeated often, need to be done consistently, carry compliance or safety requirements, or are handled by more than one person. Order fulfillment, employee onboarding, returns processing, and month-end close are all classic candidates.

How to Write an SOP Step by Step

A good SOP is easier to write than most people expect, as long as you follow a clear sequence like the following:

Choose and name the task: Pick one specific, recurring task and give the SOP a clear title that says exactly what it covers, such as "Processing a Customer Return." Keep the scope tight. One SOP should cover one process, not an entire department.
Identify who it's for: Note who performs the task and who is responsible for the outcome. This will tell you how much detail to include. An SOP for a brand-new hire needs more explanation than one for a trained specialist.
Talk to the people who do the work: The most accurate SOP comes from the person currently performing the task, not from a manager guessing at the steps. Watch the work happen or walk through it together, and write down what really occurs rather than the idealized version.
Write the steps in order: List each action in the sequence it happens, using clear, direct language. Start each step with a verb ("Scan the barcode," "Confirm the quantity," "Print the label"). Stick to one action per step so nothing gets skipped, and avoid jargon a new person wouldn't know.
Add the supporting details: Include anything the person needs to do the task correctly: required tools or system access, screenshots, links, warnings about common mistakes, and what a finished result should look like. These details will turn a bare list into something usable.
Test it with someone new: Hand the SOP to someone who doesn't normally do the task and have them follow it exactly. Wherever they get stuck or ask a question, the SOP has a gap. Fix those gaps before you finalize the SOP.
Review and date it: Add a review date and an owner. Processes change, and an SOP that's never updated will become wrong over time, which can erode trust in all of your documentation.

Once you've followed these steps a few times, you'll want a consistent format so every procedure looks the same. That's where a reusable template comes in.

What to Include in an SOP Template

You won't need to reinvent the format for every procedure. A reusable SOP template will keep your documentation consistent and faster to produce. A practical template will include:

Title and ID: A clear name as well as a reference number if you maintain many SOPs.
Purpose: One or two sentences on what the procedure accomplishes and why it matters.
Scope: What the SOP covers and, where useful, what it doesn't.
Roles: Who performs the task and who owns the outcome.
Materials and access: Tools, systems, logins, and documents needed before starting.
The procedure: The numbered, step-by-step instructions, which are the heart of the document.
Review information: The owner, the last review date, and the next review date.

Using the same template across your team will mean every SOP looks familiar, which makes them faster to write and easier to follow.

How to Make Sure Your SOPs Get Used

Writing the SOP is only half the job. Plenty of well-written procedures sit unused because of a few avoidable mistakes, so keep these habits in mind:

Keep them findable. An SOP nobody can locate might as well not exist. Store them in one central, searchable place your whole team knows about, not scattered across personal drives and email threads.
Keep them current. The fastest way to kill trust in your documentation is to let it go stale. When a process changes, update the SOP that day. One wrong procedure will make people doubt all of them.
Keep them short and scannable. Long walls of text get skimmed and abandoned. Use numbered steps, short sentences, and visuals so someone can follow the SOP while they work.
Make them part of the workflow. The strongest SOPs are connected to the system where the work happens, so the guidance is right there when someone needs it rather than in a separate binder they have to remember to check.

That last point is where many growing businesses hit the limits of static documents. A written SOP describes how to do a task, but it still relies on a person remembering to follow it. Before you wire a procedure into automated software, though, make sure the procedure itself is sound, since there's a real question of whether to fix broken processes first or address them during an ERP move.

As you scale, the natural next step is to build those procedures into the system your team already works in so that the right steps are enforced automatically rather than left to memory.

Turn Tribal Knowledge Into a System

If your operation still runs on what a few key people carry in their heads, you probably already know how fragile that is. One departure, one sick day, or one busy season is all it takes for quality to slip and the same mistakes to resurface.

Standard operating procedures are the first real fix. Written well and kept current, they capture how the work gets done, cut errors, speed up training, and make growth far less chaotic. The teams that scale smoothly are the ones that write this knowledge down before they are forced to.

A well-written SOP is one document, though, and a growing operation runs on many that connect to each other. To see how individual procedures come together into a bigger picture, read our guide to process documentation for growing operations.

When those procedures are ready to live inside the system your team works in every day, so that the right steps are built into the workflow rather than remembered, a connected ERP platform will make that possible. You can see how it would work with your own processes through our Free ERP Deployment, with no cost and no commitment.