S&OP for DTC Brands: A Practical Monthly Planning Process

Marketing has a revenue target. Operations has a purchase-order tracker. Finance has a cash forecast.

Each looks reasonable in isolation. Then the campaign launches before the stock arrives, the deposit falls due before the expected sales cash, and the founder has to reconcile three different versions of the business.

Sales and operations planning, or S&OP, creates a regular process for resolving those differences before they become expensive surprises.

For a DTC brand, S&OP should produce one agreed demand, supply and financial plan, with explicit decisions where the business cannot satisfy all three. It needs owners, reliable inputs and a decision-maker. It does not need a large planning department to begin.

This guide sets out a practical monthly process for a lean consumer business, supported by a short weekly exception review. The example, agenda and downloadable decision register are designed to help a founder move from collecting updates to making choices.

What S&OP should do for an ecommerce business

ASCM describes S&OP as a process that aligns supply and demand with business strategy, including an executive review of plans and recommendations. For a DTC team, the practical question is whether the planned sales can be supported by stock, capacity and cash.

The process should answer: what do we expect to sell, what can we supply, what must we commit now, and what trade-offs need leadership approval?

It should also make uncertainty visible. A launch estimate with little trading history deserves a different confidence level from a stable replenishment line. A supplier's unconfirmed completion date should not appear as dependable warehouse availability.

The purpose is a coherent plan the team can execute. Forecast accuracy improves through learning, but the business still needs to make decisions when the forecast is uncertain.

Separate monthly planning from weekly execution

Your monthly cycle looks far enough ahead to influence purchases, production capacity, launches and funding. The horizon should extend beyond your longest material commitment lead time. A business buying six months ahead cannot manage that exposure with a four-week view alone.

The weekly review focuses on material changes and immediate decisions: delayed production, unexpected demand, stock allocation, order backlogs and launch readiness. It should not rebuild the entire plan every Monday.

Keep daily warehouse issues in the appropriate operating channel unless they alter a wider commitment. A missed carrier collection needs action, but it should not consume the meeting intended to decide next season's inventory.

This distinction protects both planning and execution. Each has a place, an owner and a route for escalation.

Start with a small set of inputs you can reconcile

You do not need every dashboard in the company. Start with the information that changes supply and cash decisions.

One person may own several inputs in a small team. The responsibilities still need to be explicit.

Agree definitions before the first cycle. Does “sales” mean orders placed, units shipped or net revenue? Does “inbound” mean a purchase order exists, the factory has completed production or a truck has a receiving appointment? Which stock is quarantined or already promised?

Use reconciled source records where possible. Explain discrepancies between the ecommerce platform, warehouse system and finance records. A polished chart cannot make incompatible definitions consistent.

Step 1: build and challenge the demand plan

Start with a baseline informed by actual trading, seasonality and availability. Adjust for known events such as promotions, retail launches, new products and changes in paid-media investment.

Record each material adjustment and its owner. “Marketing expects growth” is not a usable assumption. A more useful entry explains the campaign dates, expected unit uplift, affected products and evidence behind the estimate.

Separate unconstrained demand from the amount you can currently fulfil. If you reduce the demand forecast to match available stock, you hide the opportunity and prevent leadership from deciding whether extra supply is worth funding.

Equally, avoid treating the revenue ambition as an independent forecast. Explain the gap between the target and the supported demand view. That gap may call for a commercial action rather than another purchase order.

Review forecast error at a level that supports decisions, then investigate the largest misses. Our inventory forecasting methods guide explains practical starting points for this work.

Step 2: test the forecast against supply

Operations converts the demand view into a feasible response. Compare requirements with usable stock, confirmed receipts, supplier capacity and warehouse throughput.

Time the supply correctly. A shipment arriving on the final day of a promotion cannot support the first week's sales. Include production completion, transit, customs where relevant, receiving and the time until stock becomes available to pick.

Identify the constraint and develop options. Can you bring forward part of an order? Reallocate stock between channels? Split transport modes? Change the launch sequence? Reduce promotion intensity on a constrained SKU?

For each option, show the units affected, cost, timing, confidence and remaining risk. Do not simply label the month red and ask the founder what to do.

Preserve the original demand view while building the constrained supply response. Leadership needs to see what cannot be served and what it would cost to change that.

Step 3: reconcile the plan with cash and margin

Finance tests the choices against the cash forecast and expected commercial return. Include deposits, balances, freight and other relevant payment dates. Receipt dates alone do not describe the funding requirement.

Show the effect on contribution as well as revenue. Emergency freight may protect sales but consume much of their margin. Conversely, refusing every premium shipment can destroy more contribution than it saves.

Bring the decision back to incremental economics. What changes if we approve the option? Which costs occur anyway? What additional stock could remain if demand disappoints? What confidence do we have in the timing?

The open-to-buy process can support the purchase allowance, while the landed-cost model helps quantify the product economics. Both need to feed the same decision rather than exist as disconnected spreadsheets.

Worked example: should a brand pay for emergency freight?

Assume a hypothetical campaign is forecast to require 12,000 units. Only 9,000 units will be available within the selling window under the existing plan. A supplier can make another 3,000 units available sooner if the brand changes the transport arrangement.

The potential shortage is 3,000 units. The incremental freight premium is $2.50 per unit, and contribution per additional fulfilled unit before that premium is $10. Assume the underlying product is already committed and that all other incremental costs are reflected in the contribution figure.

Under these assumptions, the freight premium breaks even at 750 genuinely additional sales: $7,500 divided by $10. That is 25% of the expedited quantity.

But the decision is not complete. Would those customers otherwise buy later, choose another available product or leave entirely? If the sales are merely shifted forward, the simple model overstates incremental value. Can the supplier and carrier actually meet the window? Does the payment fit the cash plan?

If only 500 sales are genuinely incremental, the same assumptions produce $5,000 of contribution against $7,500 of additional freight: negative $2,500. If only part of the shipment can be expedited, compare that option too.

The meeting should decide using those assumptions and record what would change the answer. It should not approve air freight just because a promotion is already on the calendar.

Step 4: hold a decision meeting with the right people

Distribute the reconciled inputs and proposed decisions before the meeting. Ask attendees to challenge factual errors in advance so the session does not become a live spreadsheet repair exercise.

A practical starting agenda is 45 minutes:

This is a suggested agenda, not a universal standard. Increase the preparation or meeting time when complexity requires it. A short meeting only works when the analysis has already happened.

The founder or delegated leader must have authority to resolve conflicts. Marketing cannot independently approve a launch that requires unapproved inventory funding. Operations cannot quietly reduce the sales plan because buying is difficult. Finance needs to explain the constraint and help evaluate alternatives.

Write down the decision, financial exposure, owner, deadline and review trigger. “Monitor closely” is incomplete unless someone knows what to monitor and when a change requires action.

Step 5: publish the plan and follow through

After approval, update purchase orders, production schedules, stock allocations, launch dates and the cash forecast. The plan is not implemented because the meeting minutes exist.

Keep a dated version of the approved assumptions. Log subsequent changes so the next review can explain why performance differed. Separate a poor forecast from a late decision, supplier failure or incorrect inventory record; each needs a different response.

In the weekly exception review, focus on items beyond agreed tolerances. Define those tolerances around the business: stockout exposure on an important line, supplier slippage beyond the available buffer or a payment that exceeds approved funding. Avoid using arbitrary percentage thresholds for every category.

Close the loop on decisions. If the team paid for premium freight, check whether the goods arrived and what demand actually materialised. Use the result to improve the next decision, while recognising that a sound decision can still produce an unfavourable outcome under uncertainty.

Measure whether the process is helping

Start with a small scorecard: forecast error and bias, in-stock performance, inventory exposure, supplier delivery performance, premium freight spend and overdue actions.

Define the metrics carefully. For example, a simple aggregate WAPE calculation is the sum of absolute forecast errors divided by the sum of actual demand over the selected observations. It is undefined when the denominator is zero. It can also conceal problems in low-volume products, so inspect important exceptions separately.

Sales history constrained by stockouts is not a complete record of demand. An apparently accurate forecast can simply reflect the inventory ceiling. Document how availability affected the comparison.

Look for operational progress: fewer surprises requiring founder intervention, earlier decisions, clearer commitments and better use of cash. Avoid claiming that S&OP caused every margin improvement when pricing, mix or other changes also contributed.

Download the meeting and decision template

Download the Onflair S&OP workbook. It includes the agenda, a decision register, input ownership and the editable emergency-freight example.

Use it to run one cycle before adding complexity. Improve missing inputs and unclear ownership first. A new planning tool will not resolve a decision nobody has authority to make.

Frequently asked questions

Is S&OP only for large companies?

No. A small team still needs to reconcile demand, supply and cash. Scale the process to the number of meaningful decisions and the complexity of the business. One person may cover several roles, but the underlying responsibilities remain.

Does every SKU need to be discussed in the meeting?

No. Prepare detailed SKU-level analysis where necessary, then bring material exceptions and decisions to leadership. Use product groups for the broader plan while preserving visibility of important individual shortages and commitments.

Who should run the process?

An operations or planning owner can coordinate the cycle, but commercial and finance must own their inputs. Leadership approves the trade-offs. For businesses without that capacity internally, a fractional COO can establish and lead the process.

How quickly can we start?

Start with the data you can reconcile and disclose the gaps. Set a first cycle, assign owners and prioritise the decisions that cannot wait. The process can improve each month; pretending incomplete data is reliable is more damaging than acknowledging its limits.

Build a planning rhythm the business can execute

Onflair's fractional COO service connects planning, suppliers, inventory, fulfilment and team accountability. If the founders are still manually joining those pieces, discuss your operation with us.

ASCM provides the referenced S&OP framework. The meeting design, controls and hypothetical decision example are Onflair's recommended adaptation for a lean DTC business. Author: Anthony Mellor, Onflair.