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The Best Way to Merge BigCommerce and TikTok Shop Data for Side Hustle Bookkeeping
If you're doing side hustle bookkeeping 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 BigCommerce file first. The first time you see this file shape, you map each of its columns to your target list.
- Import the TikTok Shop 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 side hustle bookkeeping.
What actually goes wrong if you do this by hand
BigCommerce gives you an Order Date column that includes a full timestamp, while TikTok Shop gives you an order creation time stamped in UTC — line those up manually across a few hundred rows and it's easy to miscount a week. On top of that, BigCommerce's export many optional columns are exported blank depending on store configuration, which can throw off auto-mapping by header position, and TikTok Shop's refunded and partially-refunded orders stay in the export with a status column instead of being removed, so totals can overstate revenue if you don't filter by status. Individually those are minor quirks; combined into one spreadsheet by hand, they're where most reconciliation errors for side hustle bookkeeping actually come from.
Why it matters for side hustle bookkeeping
Running sales channels as a side hustle usually means doing your own books, which gets tedious fast once more than one platform is involved.
Just want the quick column-difference reference instead? See the short version.