Sales and Operations Plan: 5 Steps and Pitfalls (2026)

TL;DR

A sales and operations plan (S&OP) is an integrated monthly process that aligns demand, supply, and financial planning into a single plan of record. It typically covers an 18 to 36 month rolling horizon and follows five core steps, from data gathering through executive approval. The process delivers real results (McKinsey research shows 1 to 2 additional EBIT points and up to 20 percentage points higher service levels), but it fails more often than it succeeds, usually because of missing executive sponsorship, backward-looking agendas, or spreadsheet dependence.

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What Is a Sales and Operations Plan?

A sales and operations plan is both an output and a process. The output is a single, agreed-upon plan that balances what a company expects to sell against what it can make, buy, and ship. The process is the structured monthly cycle that produces that plan.

More formally, S&OP is an integrated planning process that aligns demand, supply, and financial planning, managed as part of a company’s master planning. It’s designed to support executive decision-making related to approving a feasible and profitable plan. The Institute for Supply Management defines it as working cross-functionally to forecast anticipated demand, inventory, supply, and customer lead times based on the sales forecast, actual demand, and capacity forecast.

The concept traces back to aggregated production planning in the 1950s, but the modern term and framework are generally attributed to Richard Ling of Oliver Wight in the 1980s. Today, a typical S&OP planning horizon extends 18 to 36 months into the future, updated on a monthly cadence.

That monthly cadence is what separates S&OP from a one-time planning exercise. It creates a recurring drumbeat that forces sales, marketing, operations, procurement, finance, and leadership to reconcile their views of the business every single month.

If your team is still running on gut instinct and reactive purchasing, building a live demand forecast is often the first step toward a functioning S&OP process.

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Why S&OP Matters

Without a formal sales and operations planning process, each department optimizes in isolation. Sales chases revenue targets that operations can’t fulfill. Procurement buys based on outdated forecasts. Finance sets budgets disconnected from what the supply chain can actually deliver. The result: stockouts and overstock happening at the same time, expedite fees eating into margins, and working capital hiding in the wrong inventory.

The business case is well documented. Based on McKinsey & Company’s research, companies with an effective S&OP process realize 1 to 2 additional percentage points in EBIT, 5 to 20 percentage points higher service levels, 10% to 15% lower freight costs, and 40% to 50% lower customer delivery penalties.

Real-world case studies back this up. Eaton used S&OP to overhaul its global supply chain, training over 200 employees in ASCM’s CPIM program. The company reduced its days of on-hand inventory by 10% as of 2020, with a 20% total reduction targeted by end of 2022.

The core benefit isn’t any single metric. It’s removing the element of surprise. A working S&OP gives everyone a single set of numbers to plan from, which eliminates the political forecasting and finger-pointing that plague most mid-market companies.

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The 5-Step S&OP Process

The standard S&OP cycle follows five steps. Some organizations add a sixth (a standalone finance review), but most compress it into the reconciliation phase. Here’s how the monthly cycle works.

Step 1: Data Gathering and Product Review

The cycle begins with planners examining the product portfolio. Teams involved in R&D, product development, and new product introduction analyze the health of products in the market, review the pipeline, and make decisions about sunsetting, launching, or reprioritizing. This step sets the foundation: you can’t plan demand for products you haven’t agreed to sell.

Step 2: Demand Planning

This is where the consensus demand number gets built. Participants typically include product management, marketing, sales, operations, and finance. They analyze historical performance, market trends, customer input, and promotional plans to develop an unconstrained demand forecast.

The key word is “unconstrained.” At this stage, the team isn’t worried about whether supply can meet the number. They’re trying to capture the truest possible picture of what the market wants. This is also where forecast accuracy becomes a process problem, not a math problem. The statistical baseline matters, but the human intelligence layered on top (customer commitments, competitive moves, promotional calendars) is what separates a useful demand plan from a stale extrapolation.

Step 3: Supply Planning

Supply planning takes the demand forecast and pressure-tests it against reality. Can the factories, warehouses, and suppliers actually deliver what demand is asking for? The supply plan balances customer service objectives against inventory and operating costs, detailing resource utilization and flagging any constraints or conflicts.

This is where trade-offs get explicit. If demand exceeds capacity for a product family, the supply team surfaces that gap with options: overtime, outsourcing, pulling forward production, or accepting lower service levels. If your safety stock formulas are off, those gaps show up here first.

Step 4: Pre-S&OP Reconciliation

Pre-S&OP is a series of meetings with mid-level and senior leaders that showcase the connectivity of plans across product, demand, supply, and financial views. The primary purpose is to reconcile differences. Where demand wants to run a major promotion but supply sees a capacity wall, this is where the options get debated, quantified, and narrowed to a recommendation for executives.

This step is the engine room of the whole process. If pre-S&OP is done well, the executive meeting runs smoothly. If it’s skipped or rushed, the executive meeting devolves into a data-sorting exercise.

Step 5: Executive S&OP

The final step is the executive S&OP meeting. Senior leadership reviews the reconciled plan along with any unresolved issues and their associated recommendations. The executive team makes the final decisions and approves the plan. This becomes the company’s single plan of record for the next month, and every function works from it.

Any meeting in the S&OP process should last two hours at most, according to S&OP consultancy Involvation. S&OP cannot become a workshop. The solution: well-prepared options for all decision topics, so decisions can be selected based on facts and figures.

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Key Roles in S&OP

A sales and operations plan requires participation from across the business. Here are the core roles and what each contributes:

Role	Primary Responsibility
Demand Planner	Builds and adjusts the statistical forecast, manages overrides, and maintains forecast accuracy
Sales / Marketing	Provides market intelligence, promotional plans, and customer-level demand signals
Supply Planner	Creates the constrained supply plan in response to the demand forecast
Inventory Planner	Evaluates and maintains inventory target levels across the SKU portfolio
Operations	Assesses capacity, lead times, and production feasibility
Finance	Validates the plan against budget, margin targets, and cash flow
Executive Sponsor	Approves the final plan, resolves cross-functional conflicts, and ensures accountability

The executive sponsor is the single most critical role. Every practitioner source, from Forbes to Involvation to practitioners on Reddit supply chain forums, confirms the same thing: several companies highlight the lack of executive support as the main reason their S&OP doesn’t work.

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S&OP vs. IBP: What’s the Difference?

Integrated Business Planning (IBP) is the evolution of S&OP, not its replacement. While S&OP focuses on balancing supply and demand over the short to medium term, IBP extends those principles across the entire organization and links them to financial strategy and long-range planning.

Adopting IBP makes sense for companies that already have a functioning S&OP cycle. It stretches the planning horizon further, brings in strategic portfolio decisions, and connects operational plans directly to P&L ownership. But here’s the practical reality: most mid-market companies haven’t nailed S&OP yet. Jumping to IBP before S&OP works is like adding a second floor to a house with a cracked foundation.

For teams working on aligning demand forecasts with the rest of the business, getting the S&OP fundamentals right should come first. IBP can follow once the monthly cadence is trustworthy and the data is clean.

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Where S&OP Breaks Down

This is what most glossary pages skip, and it’s the part that matters most. Plenty of companies claim to “have S&OP.” Far fewer have S&OP that actually works.

No Executive Sponsor

This is the number one failure mode, full stop. When senior leadership doesn’t attend the executive S&OP meeting or delegates it to mid-level proxies, the process loses its teeth. Decisions don’t get made. Conflicts between sales and operations fester. The plan becomes a suggestion, not a commitment.

Backward-Looking Agendas

More often than not, S&OP gets hijacked by Supply Chain’s explanations of recent service failures. This is a double mistake: the meeting becomes backward looking and supply chain focused, instead of forward looking and demand driven. Post-mortems have their place, but that place is not the S&OP meeting.

Too-Short Planning Horizons

Companies stuck at a 3-month planning view can’t influence demand or adjust capacity. As long as utilization is low and demand is stable, short horizons feel adequate. But when an unseen trend or step change in demand arrives, these companies struggle to react without service losses or high costs. The whole point of an 18 to 36 month horizon is to spot those inflections early enough to act.

Spreadsheet Dependence

Spreadsheets aren’t bad for starting S&OP. Many good processes began in Excel. But they’re bad for scaling it. Once you’re managing more than a few hundred SKUs across multiple locations, spreadsheets can’t run what-if scenarios, handle statistical modeling, or support the collaboration a monthly cycle demands. The most used planning tool continues to be Excel, which is part of why so many S&OP processes stall. Practitioners on Reddit’s supply chain forums frequently describe this exact trap, where spreadsheet-based planning eventually collapses under SKU and channel complexity.

S&OP Treated as a “Supply Chain Thing”

S&OP has its origins in the supply chain arena. That history creates a problem: finance, sales, and marketing often see it as someone else’s meeting. When those functions opt out, the plan lacks cross-functional buy-in and becomes operationally orphaned. This is exactly why collaborative forecasting often becomes theater, with everyone nodding along to a number nobody actually owns.

For a deeper look at what goes wrong with accountability, see why there’s no penalty for a bad forecast at most companies.

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How AI Changes S&OP

AI and machine learning are reshaping the preparation steps of S&OP, not replacing the human judgment at its core. AI automates the statistical baseline forecast, freeing demand planners to focus on exceptions, market intelligence, and the commercial signals that algorithms can’t capture.

Specific applications are already proving useful. ML models can predict available capacity to drive promotion planning. They can also flag highly stable, mature SKUs that don’t need manual review, reducing analysis cycles significantly. Scenario planning, which used to take days in spreadsheets, now runs in minutes with proper tooling.

The most mature S&OP processes are built on three foundational elements: what-if scenario simulations, cross-functional planning, and consistent record-keeping. AI makes the first element dramatically faster and more accessible, especially for mid-market teams that lack dedicated analytics staff. For companies exploring this shift, escaping AI pilot purgatory is a common challenge worth understanding early.

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Getting Started with S&OP at a Mid-Market Company

Mid-market companies ($10M to $500M in revenue) arguably need S&OP more than enterprise firms. Enterprise companies have entire planning departments. Mid-market teams have one or two people wearing multiple hats, making a structured monthly cadence even more critical to prevent reactive firefighting.

Here’s how to start:

Keep it monthly. Don’t try for weekly S&OP. Monthly is the right frequency for strategic and tactical alignment.

Cap meetings at two hours. If your S&OP meeting regularly runs longer, the preparation isn’t good enough. Fix the inputs, not the meeting length.

Insist on executive participation. If the CEO or COO won’t attend, the process will eventually die. Make the meeting worth their time by surfacing real decisions, not slides.

Use a consensus demand number. Not the sales target, not the budget number, not the supply chain’s conservative estimate. A single, honest forecast that everyone contributes to and agrees to work from.

Start simple, then scale. You don’t need perfect data or perfect tools on day one. You need the discipline of showing up every month, reviewing the numbers, making decisions, and holding people accountable.

BetterDemand combines a live AI-powered demand forecast with dedicated senior supply chain experts who help mid-market teams build and run S&OP, starting at $1,000/month.

Explore how BetterDemand works

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Frequently Asked Questions

What is the main purpose of a sales and operations plan?

The main purpose is to align demand, supply, and financial plans into a single plan of record that the entire organization works from. It ensures that what sales expects to sell, what operations can produce or procure, and what finance has budgeted are all consistent and feasible.

How often should S&OP meetings happen?

The standard cadence is monthly. The five-step cycle (data gathering, demand planning, supply planning, reconciliation, and executive review) repeats every month with updated data and a rolling planning horizon.

What is the typical planning horizon for S&OP?

Most organizations plan 18 to 36 months out, though some start with a 12 to 24 month window. The key is that the horizon extends far enough to influence capacity, procurement, and strategic decisions, not just next month’s shipments.

How is S&OP different from IBP?

S&OP focuses on balancing supply and demand over the short to medium term. Integrated Business Planning (IBP) extends S&OP principles across the entire organization and connects operational plans to long-range financial strategy. IBP is the next step for companies that already have a working S&OP process.

Why do so many S&OP processes fail?

The most common reasons are lack of executive sponsorship, meetings that focus on past failures instead of future planning, planning horizons that are too short, over-reliance on spreadsheets, and failure to involve finance and sales as true participants rather than observers.

Can a small or mid-market company run S&OP effectively?

Yes, and they often benefit more from it than large enterprises. The key is keeping the process simple, insisting on executive engagement, and starting with a reliable demand signal. Mid-market teams don’t need enterprise software to run good S&OP; they need discipline, a credible forecast, and accountability.

What tools are needed for S&OP?

At minimum, you need a demand forecast, a supply capacity view, and a structured meeting cadence. Many companies start in spreadsheets and outgrow them as SKU count and location complexity increase. AI-powered forecasting tools and dedicated planning platforms can dramatically reduce the manual work in steps 1 through 3 of the S&OP cycle.

Who should own the S&OP process?

Ownership typically sits with supply chain or operations, but success requires active participation from sales, marketing, finance, and executive leadership. The executive sponsor (often the COO, VP of Operations, or GM) is the most important individual, since their presence is what gives the process decision-making authority.