Splitting an order creates new orders in Shopify, and that raises two fair questions: is tax handled correctly, and do the new orders distort your revenue reports? The short answers are yes and only if unadjusted — and the app gives you the export to adjust with. You can find these tools in Settings > Taxes & bookkeeping.
Sales tax
Multi Ship calculates sales tax for each split order according to your store’s tax settings, per destination address. Your Shopify sales tax reports work as usual and require no adjustment. Customers are never charged twice — the split orders record the payment that was already made.
Revenue reports
If original orders are not cancelled after splitting, the original order and its split orders both appear in your revenue reports, counting the same payment twice.
If you keep original orders — subtract the split orders’ total from your revenue. The bookkeeping export provides this total. Most merchants keep originals, since a cancelled order can look confusing when the customer views it in their account, and the original remains the record of payment.
If you cancel original orders — Shopify records a cancellation reversal, so your net sales figures require no adjustment. Gross sales still includes the original, so the export remains useful when reconciling gross figures.
Bookkeeping export
In Settings > Taxes & bookkeeping, choose a year (and optionally a month) and click Download CSV. The file lists every Multi Ship split order for the period with amounts and destinations, and ends with the total to subtract — ready to hand to your accountant.