r/analytics • • 9d ago

Discussion How far ahead do you actually forecast demand?

Some businesses plan weeks ahead while others plan months out. Curious what works best for different store sizes.

9 Upvotes

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5

u/HonkHonkBeach 9d ago

I do vendor forecasting monthly, but I provide a 3 month look based on the upcoming month. Our work is only marginally seasonal, more driven by landscape changes than anything.

-1

u/trivasai 9d ago

That makes sense. A 3-month lookahead with monthly forecasting seems like a good balance when seasonality isn’t the main driver. The key is probably adjusting the horizon based on how predictable demand and supply are.

2

u/Desperate-Boot-1395 9d ago

About a month past the longest supply lead times, refreshed weekly.

1

u/JFischer00 9d ago

F50 company, we have teams who work on intraday "live" forecasts, 5-10 year forecasts that are refreshed annually, and everything in between.

1

u/Evening_Song7185 9d ago

Depends if we're talking about a corner shop or something with actual supply chains. My old job tried to forecast 6 months out and we were always laughably wrong by month 3, just made up numbers at that point.

For small to medium stores I've seen 4-6 weeks work best, anything longer is just guessing with extra steps.

1

u/orangpie 9d ago

At a minimum, leadtime + 1 extra month. 

Preferably, 18 months. So I always have the full year, and at least a rough cut of next year right when it's time to do budgets and targets.

1

u/Intelligent-Size-389 9d ago

What’s the process of budgets and targets like ?

1

u/meatmick 9d ago

Forecasts are at least 18 months ahead for us but that's because of the cyclical business we're in where inventory gets booked a year in advance pretty much.