Harpy Glossary

P70 (Prognose bei 70%)

Amazon & D2C glossary · Harpy Media

P70 (Prognose bei 70%) is a forecast confidence level used in Amazon’s demand planning: a projection curve set where there is a 70% probability that actual demand will not exceed the forecast — leaving a 30% chance it runs higher.

What is P70?

It is one rung up the conservatism ladder from the mean. Where P50 is the balanced midpoint forecast, P70 builds in a moderate buffer, and the forecast numbers Amazon shows vendors across these tiers are effectively different answers to the same question: how much should we plan for if we want to be right more often than not?

Why the confidence level dictates cash and stock risk

Choosing a planning level is choosing which failure to risk. Plan at P50 and you are as likely to understock as overstock — cheap on capital, exposed to stockouts. Plan at P70 and you accept carrying somewhat more inventory in exchange for covering most of the upside variance — a good fit for products with moderate seasonality or reliable demand.

The financial consequence runs through working capital. Every unit produced against a forecast is cash committed before it sells; every unit not produced against demand is revenue foregone plus the ranking damage of a stockout. The confidence level is the dial that sets the balance between the two, and it should be chosen per product rather than applied uniformly.

How to use the P70 curve

The arithmetic is a statistical threshold: the mean expected demand plus the Z-score for the chosen percentile (about 0.52 at the 70th percentile) multiplied by the standard deviation of demand. The practical inputs are a rolling average of daily velocity and an honest measure of how much sales swing around it.

In Vendor Central, forecasts across P-levels appear in demand and forecast reports; the vendor’s job is to align production plans with the appropriate curve and to know which they have chosen. For products with volatile demand heading into a seasonal period, P70 is often the middle option — and for a brand that can absorb some excess stock but cannot afford a stockout, it is often the better one.

P70 Demand Forecast = Mean Demand + (Z(0.70) × Standard Deviation)Z for the 70th percentile is approximately 0.52. The mean comes from a rolling velocity window; the standard deviation measures how variable that demand actually is.

In practice

A brand’s fourth-quarter report shows a mean forecast of 1,000 units a week, with the P70 curve at 1,250 units because of known holiday volatility. The supply-chain lead times the factory order against the 1,250 figure. Actual weekly demand peaks at 1,200 units; every purchase order is fulfilled without a gap, revenue lands, and the buffer was worth every unit of stock it carried. The forecast tier chose the risk deliberately.

⚠️ Watch out. A competing vendor reads only the mean — 1,000 units a week — and plans production to that number. Holiday demand arrives at 1,200, purchase orders go unfilled, and the fulfilment rate penalty lands alongside the stockout. The listing loses visibility during the most valuable fortnight of the year, and the recovery in January costs more than the extra stock would have.

💡 Harpy tip. Pick your forecast tier per product, in advance, and write it into the planning assumption: P50 where carry costs are brutal and demand is steady, P70 or above where a stockout costs rank and seasonality is real. Then hold the line — the point of choosing a confidence level is to stop re-litigating the buffer every time cash feels tight.

How Harpy Media helps

Demand planning is part of our vendor and inventory work: forecast tiers read from the platform’s own reporting, buffers chosen against the cost of being wrong in each direction, and production orders sized to the curve deliberately.

P70 FAQ

What does P70 mean in Amazon forecasting?

It is a demand projection with roughly 70% confidence that actual demand will not exceed it — a moderately conservative planning level that sits between the mean forecast and the higher-confidence tiers.

How is P70 different from P50?

P50 is the balanced midpoint: demand is as likely to come in above as below. P70 adds buffer, deliberately accepting slightly more inventory risk in exchange for covering most demand variance — useful for seasonal or moderately volatile products.

Where do I find P-level forecasts?

In Vendor Central demand and forecast reporting, flow-planning and buy-plan dashboards, and the replenishment models Amazon Retail runs. The tiers are shown alongside each other so vendors can choose the planning level that fits the product.

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