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The Best Way to Merge Walmart Marketplace and Wayfair 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
- 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.
- Import the Walmart Marketplace file first. The first time you see this file shape, you map each of its columns to your target list.
- Import the Wayfair file the same way. Its columns get mapped once too — after that, every future file with this shape merges with no extra clicks.
- 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.
- Export. CSV or Excel, ready for cash flow tracking.
What actually goes wrong if you do this by hand
Walmart Marketplace gives you an Order Date column separate from the ship-by date, while Wayfair gives you a purchase order date distinct from the ship date required by Wayfair's supplier terms — line those up manually across a few hundred rows and it's easy to miscount a week. On top of that, Walmart Marketplace's export each order line can appear as its own row with a repeated order ID, similar to Shopify's line-item export, and Wayfair's built for suppliers rather than direct-to-consumer sellers, so column names lean toward logistics (PO, ship window) rather than retail checkout fields. 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.
Just want the quick column-difference reference instead? See the short version.