Why this matters
The most valuable output of a seasonal promotion isn't the revenue — it's the data. Twelve months from now you'll face the same decisions with a foggy memory. A one-hour review while details are fresh turns this season's mistakes into next season's head start.
What "done" looks like
- A short written review exists: numbers, what worked, what flopped, next-year notes
- Sales are compared against the goals you set at the start of this checklist
- Leftover inventory has a plan: clearance, bundling, or carryover
- The review is stored where next year's planning will actually find it
How to do it
- Block one hour within two weeks of season's end — after that, memory rewrites the story.
- Pull the numbers: revenue vs. goal, units by product, margin after discounts, ad spend, traffic sources.
- List the top three winners and top three flops with one honest sentence on why for each.
- Capture operational notes: stockouts, shipping crunches, staffing gaps, what broke.
- Draft next year's first moves now — dates to start earlier, products to reorder, promos to kill.
- File it with your promo calendar so next season starts from notes, not from scratch.
Common mistakes
- Judging by revenue alone and ignoring margin after discounts and ad spend
- Reviewing only what sold, not what the operation cost you in chaos
- Writing the review, then storing it where nobody will look again
Real-world examples
- Retail teams commonly hold post-season post-mortems that feed next year's buying, since holiday inventory is decided months in advance.
- The agile retrospective format — what went well, what didn't, what we'll change — is widely used and transfers cleanly to a solo founder's seasonal review.
From a founder's point of view
Every season you run without a review is a tuition payment with no diploma. The review is how the same effort compounds: year two should be easier than year one, and only written notes make that true.
Rule of thumb
If next year's you could plan the whole season from your notes without asking this year's you a single question, the review is done.