How can I tell which post led to an order?
Tag the link in each post differently and ask every buyer how they found you, then treat the answers as a useful hint rather than exact proof.

You post four times a week. An order arrives. Was it the reel on Monday or the carousel on Thursday? Instagram does not hand you a simple answer, and your store may not either. You can still get close with two cheap habits.
Habit one: a different link for each post
Instagram captions do not hold clickable links, so people reach your store through your bio link, a story link or a link sticker. That is where tagging helps.
Create a tagged version of your store link for each campaign, using the idea in what is a UTM link. For example, the story link for the Tuesday candle post can have a tag containing the word candle and the date. The bio link can carry a different tag, and you change it when you change what the bio promotes.
A practical way to keep this manageable:
- One tag for your bio link.
- One tag for each story link you post.
- One tag for each WhatsApp broadcast.
Write each one in a sheet with the date, the post and the tag. Later, when your analytics shows visits under that tag, you know which post sent them.
Habit two: ask the buyer
This is the more reliable one. Many people will not remember clicking a link, but they remember where they saw your product. Add a simple optional question to your process:
- On WhatsApp: "Which post or reel brought you to us? It helps me plan what to make more of."
- In your packing note: a line asking them to message you where they found you.
Write the answer next to the order in your sheet. After a month, count.
Use a code as a third clue
If a reel mentions a code, such as a short word for that reel, then orders using it show where they came from. Your Coupons screen in the Varchas admin lets you create codes with a usage limit and an expiry date, so you can keep it small. Be careful not to give away more than you can afford; the maths is in percent-off coupon profit walkthrough.
Why the answer is never exact
Attribution is a polite word for educated guessing. Here is what gets in the way:
- Someone sees a reel on Monday, forgets, sees a story on Friday and buys. Which one gets the credit?
- Someone sees your post, then asks a friend, who buys.
- Someone follows you for weeks before ordering.
- Some links lose their tag when opened in apps.
- A customer may say "Instagram" when they mean a specific friend's repost.
So please do not say "this reel earned Rs 4,000". Say "this reel was mentioned by three buyers" or "the story link with this tag had the most visits". That is true and still useful.
What to do with your findings
Look for patterns across several weeks, not single posts. If product-in-use reels keep being named, make more of those. If most people mention a creator's story, think about working with them again. If a type of post never gets mentioned, try changing it once before you drop it. Reel idea: showing product size with everyday objects is one format you can test.
Repeat the cycle each month. It does not need software. A sheet with columns for date, order, how they found you, and the tag is enough. Over time, your own notes will teach you more about your audience than any generic advice, and they cost nothing but a minute per order.