Connect Bigcommerce with SpeedTax to calculate U.S. sales tax in real time at checkout, reduce manual tax rules, and keep tax data consistent across orders, refunds, and reports.
• Bigcommerce checkout and order events trigger SpeedTax API calls for tax calculation using ship-to, ship-from, line items, discounts, and shipping amounts.
• Product taxability codes, fulfillment locations, and jurisdiction settings are mapped between Bigcommerce and SpeedTax to keep destination-based rules consistent.
• Customer tax status and exemption certificate references are associated to the Bigcommerce customer or order so exempt and taxable transactions are handled correctly.
• Final calculated tax is written back to the Bigcommerce order and stored per line item for accurate invoicing, refunds, and partial shipments.
• Refunds and returns generate corresponding adjustment requests so SpeedTax records match Bigcommerce order changes over time.
• Sync jobs use idempotent order identifiers, validation rules, and error logging so failed tax calls can be retried without duplicating transactions.
.png)
Bigcommerce sends address, cart, and shipping data to SpeedTax, which returns the tax amount based on your configured rules. The calculated tax is then written back to checkout and stored on the order.
Yes, exemptions can be applied based on customer type, exemption status, and destination rules configured in SpeedTax. We validate the mapping so exemptions show correctly in checkout and order records.
It can sync tax behavior for credits by referencing the original order tax decision and recalculating when needed. This keeps refunded tax consistent across Bigcommerce, SpeedTax, and your finance exports.
At minimum, you map ship-to address, nexus context, product taxability, shipping taxability, discounts, and customer exemption flags. We also align order statuses so tax reporting matches your operational flow.
Yes, we have delivered 2,100+ eCommerce projects since 2003 and support complex integrations across platforms. Our team can implement, test edge cases, and monitor tax accuracy post go-live.










