How to Run S&OP in 60 Minutes a Month (Even If You're a Team of 3)

S&OP — Sales and Operations Planning — has a reputation for being an enterprise process. Large companies run it with dedicated planning teams, multi-day review cycles, and executive steering committees. The acronym alone is enough to make a founder at a $10M brand tune out.

That's a shame, because the core of S&OP is simple: once a month, get the right people in a room, look at what you expect to sell, check whether your inventory can support it, and make the decisions that need to be made.

That's it. It doesn't require a planning team. It doesn't require expensive software. It requires about 60 minutes a month and a process that's clear enough that people actually follow it.

Here's the minimum viable version — a four-step monthly cadence that works for a team of three and scales as your brand grows.

Why S&OP Matters at Small Scale

Before the process, a word on why this is worth doing at all.

Most founder-led brands at $5M–$20M make inventory decisions reactively. The ops lead notices a SKU is running low and places an order. The founder approves a production run based on a gut feeling about the next quarter. Finance asks why the warehouse bill is so high and nobody has a clean answer.

Each of those decisions is made in isolation, without a shared view of what demand is coming and whether the current inventory position supports it. The result is chronic: you're always short on something, always long on something else, and always reacting instead of deciding.

S&OP doesn't eliminate uncertainty. It gives you a structured moment each month to look at what's coming, align on assumptions, and make inventory decisions deliberately rather than by default. For a small brand, one hour a month spent on this is worth more than almost anything else you could do for your operations.

Who Needs to Be in the Room

For a team of three, the roster is simple:

The demand side: whoever owns the commercial view — sales lead, marketing lead, or the founder if they own revenue. This person brings the forward demand picture: what's the forecast for the next three months, what promotions are planned, what retailer programs are coming.

The supply side: whoever owns operations and inventory — ops lead, supply chain manager, or again the founder if that role isn't staffed. This person brings the inventory position: what's on hand, what's inbound, when reorders are due, what the supply constraints are.

The decision-maker: the founder or CEO. Not to run the meeting — to make the calls that the meeting surfaces. When the demand forecast and the inventory position don't align, someone needs to decide. That person needs to be in the room.

Three people. Sometimes those roles overlap and it's two people. The important thing is that both the demand view and the supply view are represented, and the person who can make decisions is present.

The Four-Week Cadence

The mistake most small brands make when they try to run S&OP is collapsing everything into a single meeting and then wondering why it takes three hours and produces no decisions. The meeting is slow because the work that should happen before it — refreshing the data, reviewing the demand, checking the inventory — is happening in real time, in front of everyone.

The fix is a four-step cadence that spreads the prep work across the month. By the time the meeting happens, the data is ready and the agenda covers decisions, not catch-up.

Week 1: Refresh the Data

Who: Ops lead or whoever owns the demand model

Time required: 30–60 minutes

What happens: Update the planning model with last month's actuals

This is the mechanical step. Pull last month's unit sales by SKU. Drop them into the demand model. Update inventory on-hand and inbound POs. Recalculate the forward 12-month projection.

Specifically:

• Replace last month's forecast with actual sales figures
• Calculate last month's forecast error (actual minus forecast, expressed as a percentage)
• Flag any SKUs where the error was significant — more than 20% off in either direction
• Update on-hand inventory from your 3PL or warehouse system
• Update inbound POs: mark anything received, add any new orders placed
• Roll the model forward: the 12-month projection now starts from the current month

Output: a refreshed demand model with current inventory, current forecast, and a list of SKUs that need attention.

This step should not happen in the meeting. It should be done in week one so the numbers are ready when the review begins.

Week 2: Demand Review

Who: Commercial lead (sales, marketing, or founder)

Time required: 20–30 minutes

What happens: Review the forward demand picture and update commercial assumptions

The commercial lead reviews the updated model and answers three questions:

Does the baseline forecast still reflect reality? If something has changed — a retailer is increasing their order volume, a DTC promotion is planned, a product is trending up or down — now is the time to update the assumption. The model generates a statistical baseline; the commercial lead layers in judgment.

What promotional or seasonal events are coming in the next 90 days? Every planned event that will lift demand above baseline — a sale, a retail program, a trade promotion, a seasonal peak — needs to be visible in the model. If it's not already there, add it now with a realistic lift estimate.

Are there any demand risks the model can't see? A retailer who's been slow to reorder. A product with softening reviews. A competitor who just launched something similar. These are qualitative signals that won't show up in historical data but should inform the forward forecast.

Output: an annotated demand forecast with commercial assumptions documented and any significant changes flagged for discussion in the meeting.

Week 3: Inventory and Supply Review

Who: Ops lead

Time required: 20–30 minutes

What happens: Check whether the current inventory position can support the demand forecast

With the updated demand forecast in hand, the ops lead runs through the inventory position for each SKU:

Weeks of stock on hand: Given current on-hand inventory and the forward demand forecast, how many weeks until each SKU reaches safety stock level? Any SKU running below eight weeks (or below your target threshold) needs a reorder decision.

Inbound coverage: Are there POs already in transit that cover the gap? If yes, when do they arrive? Is that timing tight?

Reorder decisions needed: Which SKUs need a purchase order placed this month? What quantity, and what's the order deadline given lead time?

Supply constraints: Is there anything on the supply side that creates risk? A co-man that's running behind. A raw material on allocation. A freight issue affecting inbound timing. These need to surface before the meeting, not during it.

Output: a supply summary with weeks-of-stock by SKU, a list of reorder decisions required, and any supply-side risks flagged.

Week 4: The 30-Minute Meeting

Who: All three roles — commercial, ops, decision-maker

Time required: 30 minutes (60 minutes maximum for complex months)

What happens: Review the aligned picture, resolve conflicts, make decisions

By the time this meeting happens, the data is fresh, the demand assumptions are updated, and the inventory picture is clear. The meeting isn't a status update — it's a decision session.

Agenda:

(10 minutes) Demand review

Commercial lead presents the updated forecast. Key changes from last month. Promotional events in the next 90 days. Any demand risks or upside. The question: does everyone agree this is the right demand assumption to plan inventory against?

(10 minutes) Inventory and supply review

Ops lead presents the supply summary. Weeks of stock by SKU, reorder decisions needed, supply constraints. The question: given the demand forecast, what decisions do we need to make today?

(10 minutes) Decision and alignment

Work through the reorder decisions. Approve or modify the purchase orders recommended by the model. Address any misalignment between the commercial forecast and the inventory position. Assign any follow-up actions with owners and dates.

Close with: what decisions were made, what actions are outstanding, and what the plan is if a key assumption turns out to be wrong.

That's the whole meeting. If it's taking longer than 30 minutes consistently, either the prep work isn't being done in advance or the meeting is solving problems it shouldn't be solving. Use the meeting to make decisions, not to discover information.

The Most Common Ways This Process Breaks Down

Skipping the data refresh in week one. The meeting becomes a data collection exercise instead of a decision session. Nothing gets decided because nobody agrees on the numbers.

Running the meeting without the decision-maker. The demand and ops leads align on what needs to happen, but the person who can approve a production order isn't there. Action items sit for two weeks. The window closes.

Using the meeting to revisit the forecast instead of act on it. The demand review becomes a debate about whose number is right. This is usually a sign that the commercial assumptions weren't documented in week two — if everyone can see the logic behind the forecast, there's less to argue about.

Skipping months when things are going well. The months when you think you don't need the meeting are often the months when a problem is quietly building. Run the cadence every month.

Adding people when numbers go bad. When the brand misses its forecast, the instinct is to bring leadership into the meeting for oversight. This usually makes the meeting worse — bigger audience, less honesty, more performance, fewer real decisions. Keep the room small. If leadership wants visibility, give them a one-page summary after the fact.

What This Looks Like in Practice

A three-person team running this well typically completes the full monthly cycle in under two hours of total work across all participants — roughly 45 minutes of prep spread across weeks one through three, plus a 30-minute meeting in week four.

That's it. Two hours a month. The output is a refreshed 12-month demand forecast, a confirmed inventory position, and a documented set of purchase order decisions. No stockouts from missed reorder windows. No overstock from unchecked optimistic assumptions. No fire drills because someone noticed the inventory was low three days before a promotion.

The process doesn't require a planning team. It requires consistency — running it every month, doing the prep work in advance, and keeping the meeting focused on decisions rather than discussion.

How to Scale It

As the brand grows, the process scales without changing its structure:

• More SKUs: the model gets more rows, the review time gets slightly longer
• More channels: add a channel-level demand review in week two
• Retail accounts: add retailer-specific inventory tracking to the week three review
• Bigger team: the three core roles may be staffed by more people, but the meeting structure stays the same
• More complexity: add a pre-meeting statistical model review for SKUs with significant forecast error history

The minimum viable version described here works from your first retail PO through $20M+ in revenue. What changes is the depth of the analysis, not the rhythm.

Want the agenda template?

We've built a S&OP meeting agenda you can use with your team starting this month — the exact format we use with clients, with prompts for each section and a decision log at the bottom.

Download the S&OP Agenda Template

Or if you want to talk through what a planning process would look like for your specific business:

Book your demand planning audit at izba.co