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Merge Shopify and WooCommerce Sales Data for Sales Tax Reporting in Ireland

Sales tax reporting needs order totals broken out consistently by date and location, which rarely matches between two platforms' raw exports. In Ireland, that also means accounting for VAT: VAT at the standard 23% rate applies once registered, with the same EU cross-border thresholds as other EU sellers.

Why Shopify and WooCommerce exports don't line up

Shopify: a Created At timestamp that includes a timezone offset; a single Total column that already nets out discounts, with tax broken out separately; an order Name like #1001 rather than a numeric ID.
WooCommerce: an Order Date in whatever format your WordPress site's locale is set to; an Order Total that depends entirely on which tax/shipping plugins are installed; a plain numeric Order Number.

Neither export is built with VAT in mind, so getting from "two raw files" to "Ireland-ready numbers" means normalizing dates/totals first, then applying your own VAT 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 EUR).
Map the Shopify export, then the WooCommerce export — each file shape is remembered after the first time.
Export the merged sheet and apply your VAT 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 Shopify + WooCommerce

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