How sales tax routing works

For stores where you collect your own sales tax, TruSync uses your store’s own tax calculation for each order and tells QuickBooks not to recalculate it. Your store’s tax engine (whatever calculates tax at checkout) is treated as the source of truth for how much tax was collected.

Where that tax amount lands in your books is controlled by which QuickBooks tax rate you’ve mapped a jurisdiction to. Each QuickBooks tax rate belongs to a tax agency, and the agency owns the liability account it posts to — TruSync doesn’t set a liability account directly, it routes through the tax rate you’ve mapped.

This is why mapping jurisdictions to tax rates (in Settings → Tax) matters: it’s not just a formality, it’s what determines which agency and account the money is tracked against.

QuickBooks has its own automated tax calculation feature. Turning it on for a TruSync-connected store would duplicate what your store’s own tax engine already did, and can produce incorrect returns. TruSync explicitly tells QuickBooks not to recalculate tax on the orders it posts — automated calculation isn’t needed and shouldn’t be enabled.

Amazon and eBay orders post with zero tax, since the marketplace already collected and remitted it as a facilitator — there’s nothing for TruSync or QuickBooks to route.

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