How to write an official Standard Operating Procedure (SOP)?

A standard operating procedure (SOP) is a step-by-step document that describes exactly how to perform a routine process so it is done correctly and consistently every time. To write one, give it a clear title and ID, then define its purpose, scope, roles, materials, numbered steps, compliance notes, references, and revision history. Keep the language plain and action-oriented, and review it regularly so it stays accurate.

SOPs – You may have heard this abbreviation many times before, and it may be the first thing that comes to your mind when you think of “We need to standardize our processes”.

Yes, writing your processes down into SOPs is far more crucial than a bureaucratic checkbox. Standard Operating Procedures (SOPs) are step-by-step documents that describe how to perform routine processes in an organization. They serve as the official process documentation that turns a one-off way of working into a repeatable standard, ensuring tasks are carried out correctly and consistently for quality results. In that sense an SOP is the final, written output of process standardization: the modelling stage decides how the process should run, and the SOP locks it in.

But are SOPs simply the diagrams or flowcharts that you sketch? There are many more to them than you may think.

Are there formal standards or frameworks for process documentation?

Yes – and no. There is no single global rulebook for how every SOP should look, but there are widely accepted frameworks and compliance-driven formats you can follow.

• ISO Standards: ISO 9001 (Quality Management) and ISO 27001 (Information Security) both require documented processes. ISO 10013:2021 even offers specific guidance on how to write process documentation.
• Regulatory guidelines: In industries like pharmaceuticals, food safety, or finance, regulatory bodies such as the FDA or EPA provide detailed expectations for SOP content, control, and change tracking.
• Industry best practices: Many organizations adopt internal templates based on these external standards. A common structure includes: Title, Purpose, Scope, Responsibilities, Procedure Steps, and Revision History.

The key is consistency. Just pick a standard, or if you don’t feel like any, stick to your own way of documentation and adapt it to your business, as long as it has all the key components and is applied uniformly across all SOPs.

Key components of a Standard Operating Procedure

A good SOP answers three questions clearly: What is done? Who does it? And how is it done?

Here’s what to include in a well-structured SOP:

Some SOPs may also include a glossary if you use industry-specific terms or acronyms.

Best practices for writing SOPs

Writing a process is about clarity, not creativity. Here's how to make your SOPs clear, usable, and effective:

• Use plain language – Write for the person doing the task, not for an auditor. Use action verbs. Avoid jargon unless defined.

• Be direct and specific – Say "Email the invoice to the finance team" instead of "Ensure the document is properly communicated". Avoid ambiguous terms like "frequently" or "as needed"; instead, specify exact timeframes, quantities, or conditions.

• Keep steps short and clear – Use numbered steps for sequential tasks and bullet points for non-sequential items. Keep each step focused on a single action.

• Maintain visual-written consistency – Use identical terminology between process diagrams and SOPs. If your flowchart shows "Validate Payment Request," don't call it "Review Payment Form" in the written procedure. Update both visual models and written SOPs together when processes change.

• Review and update regularly – Schedule reviews. Processes change, so your documentation should too.

• Accessibility – Ensure the SOP is easily accessible to all users who need it, whether in print or digital format. Consider translation needs for multilingual workplaces. If best, leverage technology to integrate SOPs into your team's daily workflow.

Think of your SOPs as living guides, not one-time projects. A dusty SOP in a forgotten folder won't help anyone.

Which SOP format fits your process?

The right format depends on how complex the process is and how much judgment it requires. Match the format to the task instead of forcing every procedure into the same shape:

For high-volume or cross-team processes, an SOP works best as part of broader business process management, where the written procedure, the visual model, and the tracking system all stay in sync.

Standard operating procedures examples

Standard operating procedures for HR department: Employee offboarding process

This Employee Offboarding SOP template shows a clear six-step process to safely remove departing employees, recover company property, and follow legal requirements while keeping good relationships.

Download the full Employee Offboarding SOP template here.

Standard operating procedures for Finance department: Payment request process

This Payment Request workflow template ensures vendors receive accurate, timely payments while maintaining proper authorization, budget compliance, and complete transaction documentation throughout the process.

Download the full Payment Request SOP template here.

But in the end, why do you need to write SOPs?

You may ask: Why do we have to make a fuss and take time for this thing when we already have the idea of the process ready after the designing and modelling stage?

Short answer: Because if you don’t write it down, it doesn’t exist.

When someone new walks into your operation, or when something breaks, or when an audit knocks on your door, you don’t pull out a diagram. You reach for the document that tells people exactly what to do. That’s your SOP.

So yes, sometimes you do need to make a fuss – because if you don't, people will assume it's optional. And with SOPs, that assumption can be dangerous. The moment you skip documenting, you're trusting your business to chance.

Frequently Asked Questions

What is a standard operating procedure (SOP)? An SOP is a documented, step-by-step procedure that describes how to perform a routine task or process so it is carried out correctly and consistently across an organization. It answers what is done, who does it, and how it is done.

What are the key components of an SOP? A well-structured SOP includes a title and ID, purpose, scope, roles and responsibilities, required materials or tools, numbered step-by-step procedure, safety and compliance notes, references and appendices, and a revision history with approvals.

Is there a standard format or framework for writing SOPs? There is no single global rulebook, but widely used references include ISO 9001 and ISO 10013:2021 for documentation guidance, plus regulatory formats from bodies like the FDA. The key is to pick one structure and apply it consistently across every SOP.

What is the difference between an SOP and process documentation? Process documentation is the broad set of records that describe how a process works, including diagrams and flowcharts. An SOP is a specific, prescriptive type of process documentation that tells people the exact steps to follow, making it the actionable instruction set rather than just a map.