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The Best Way to Merge Amazon Seller Central and WooCommerce Data for Cash Flow Tracking

If you're doing cash flow tracking by hand right now, here's the fastest path from "two exports" to "one usable sheet," and why the manual version keeps breaking.

Step by step

  1. Decide your target columns once. Most people settle on Date, Channel, Order ID, and Total — set that up in CSV Experts and you won't redo it.
  2. Import the Amazon Seller Central file first. The first time you see this file shape, you map each of its columns to your target list.
  3. Import the WooCommerce file the same way. Its columns get mapped once too — after that, every future file with this shape merges with no extra clicks.
  4. Check the merged totals. Dates and numbers are normalized automatically, so a European "24,00" and a US "24.00" both land as the same value.
  5. Export. CSV or Excel, ready for cash flow tracking.

What actually goes wrong if you do this by hand

Amazon Seller Central gives you a purchase date/time column stamped in UTC, not your local time, while WooCommerce gives you an Order Date in whatever format your WordPress site's locale is set to — line those up manually across a few hundred rows and it's easy to miscount a week. On top of that, Amazon Seller Central's export reports differ noticeably between the 'All Orders' report and the Payments/Settlement report — totals rarely match at a glance, and WooCommerce's column layout depends on which export plugin generated the CSV, so two WooCommerce stores can produce different headers entirely. Individually those are minor quirks; combined into one spreadsheet by hand, they're where most reconciliation errors for cash flow tracking actually come from.

Why it matters for cash flow tracking

Tracking cash flow across channels means normalizing payout dates and amounts that are recorded differently on each platform.

Try it with your own files →

Just want the quick column-difference reference instead? See the short version.

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