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Fix BigCommerce → QuickBooks Sync Issues (Not Working, Errors, Duplicates)

🔧 1 Common Issues

Diagnose and resolve common sync problems. We've documented the 1 most common issues, their root causes, and exactly how to fix them. See step-by-step fixes for duplicates, missing fields, rate limit errors, and connection issues.

high Very High Frequency

BigCommerce Order Total is $105.01, but QuickBooks Invoice created is $105.00.

Also searched as: "BigCommerce QuickBooks bigcommerce order total is $105.01, but quickbooks invoice created is $105.00."

#1 Line-Item vs Subtotal Tax Calculation 100% likely

📋 How to Diagnose

  1. 1. BigCommerce calculates tax on the subtotal.
  2. 2. QuickBooks often calculates tax per line item and rounds each.
  3. 3. This results in a 'Penny Difference' that prevents reconciliation.

✓ Solution

Stop syncing individual invoices. Use a Daily Summary sync pattern via Make to post a single Journal Entry that matches the bank deposit exactly.

⏱️ Est. time: 60 min

Use Make → →
View Setup Guide

Step 1: Try the Official Integration

Direct connection

Start with the native integration if available. It's usually the most reliable, but may have limitations.

View Setup Guide

Free with your subscription

Step 2: Use Make for Custom Flows

No code automation

Create custom integration workflows with Make's visual designer. It works with almost any API.

Try Make Free →

1000 ops/mo free. No credit card.

Step 3: Self-Hosted with n8n

Full data control

Need complete data privacy? n8n is open-source and self-hostable. Build custom integrations with full control over your data.

Try n8n Free →

Open source. Self-host or cloud. Unlimited ops.

Step 4: Add Human Review

Approval automation

Relay adds human-in-the-loop approvals, Slack/Teams alerts, and conditional logic to your automation.

Try Relay Free →

1000 actions/mo free. No credit card.