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Merge Etsy and Amazon Seller Central Sales Data for Sales Tax Reporting in Australia

Sales tax reporting needs order totals broken out consistently by date and location, which rarely matches between two platforms' raw exports. In Australia, that also means accounting for GST: GST is a flat 10% once you're registered, but is only owed above the annual registration threshold.

Why Etsy and Amazon Seller Central exports don't line up

Etsy: Sale Date, usually already in your local timezone; Item Total, Shipping, and Etsy fees as separate columns, before tax; a numeric Order ID shared by every item in the same order.
Amazon Seller Central: a purchase date/time column stamped in UTC, not your local time; item price, promotion discounts, and Amazon referral fees split across several columns; an Amazon Order ID in a long dashed format (e.g. 123-4567890-1234567).

Neither export is built with GST in mind, so getting from "two raw files" to "Australia-ready numbers" means normalizing dates/totals first, then applying your own GST treatment on top of the merged total — not per platform separately.

How to merge them

Set your target columns once in CSV Experts (Date, Channel, Order ID, Total, and a Currency column if you sell in more than AUD).
Map the Etsy export, then the Amazon Seller Central export — each file shape is remembered after the first time.
Export the merged sheet and apply your GST treatment to the combined total.

Merge your files now →

FAQ

Does this upload my sales data anywhere?

No. Everything runs in your browser using JavaScript — your files are never sent to a server.

Does it work for more than two channels?

Yes. Add as many source files as you want; each distinct file layout is mapped once and remembered.

Other countries for Etsy + Amazon Seller Central

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