QuickBooks Desktop by Parex vs Tax Rex ‑ Sales Tax Automationfor Shopify (2026)
QuickBooks Desktop by Parex and Tax Rex ‑ Sales Tax Automation both achieve excellent 5/5 ratings on the Shopify App Store, but cater to fundamentally different needs within the 'Finances' category. QuickBooks Desktop by Parex focuses on integrating Shopify sales data with QuickBooks Desktop accounting software, providing options for individual or summary order syncing. Its primary strength lies in facilitating easy reconciliation and automated data transfer between Shopify and QuickBooks. The target audience is merchants already using QuickBooks Desktop who need a streamlined integration. Tax Rex, conversely, is dedicated to simplifying US state sales tax compliance. It automates tax return reporting, filing, and nexus monitoring. Its strength is in saving time and ensuring accuracy in sales tax management. The target audience is US-based Shopify merchants, especially those selling across multiple states and struggling with sales tax complexity.
At a Glance
QuickBooks Desktop by Parex
64 reviews
Tax Rex ‑ Sales Tax Automation
91 reviews
Detailed Overview
QuickBooks Desktop by Parex
Sync sales to QuickBooks Desktop in an automated manner - Sync individual orders
Key Features
- Individual Order Sync - Includes Customer, Products, Taxes and All details
- Automated Sync Process
- Very Easy Reconciliation
- Summary Invoice Sync - Sync Daily Summary or Settlement Summary
Tax Rex ‑ Sales Tax Automation
US State Sales Tax return Reports & Automated Filing for your store. Easy, Accurate & Time Saving!!!
Key Features
- Timely Autofile: Ensure on-time tax return filings while you focus on business
- Accurate Tax Reports: Precise sales tax reports tailored to state's requirements
- Economic Nexus Alerts: Stay informed on new state nexus thresholds
- Effortless State Registration: Simplified new state registration for compliance
- Ability to Ignore orders imported from Marketplaces like Amazon, Ebay, etc
Feature Comparison
| Rating | 5/5 | 5/5 |
Rating QuickBooks Desktop by Parex5/5 Tax Rex ‑ Sales Tax Automation5/5 | ||
| Reviews | 64 | 91 |
Reviews QuickBooks Desktop by Parex64 Tax Rex ‑ Sales Tax Automation91 | ||
| Core Function | QuickBooks Desktop Integration | Sales Tax Automation |
Core Function QuickBooks Desktop by ParexQuickBooks Desktop Integration Tax Rex ‑ Sales Tax AutomationSales Tax Automation | ||
| Automation Level | Automated Data Sync to QuickBooks | Automated Sales Tax Filing & Reporting |
Automation Level QuickBooks Desktop by ParexAutomated Data Sync to QuickBooks Tax Rex ‑ Sales Tax AutomationAutomated Sales Tax Filing & Reporting | ||
| Target Merchant | QuickBooks Desktop Users | US-Based Merchants Dealing with Sales Tax |
Target Merchant QuickBooks Desktop by ParexQuickBooks Desktop Users Tax Rex ‑ Sales Tax AutomationUS-Based Merchants Dealing with Sales Tax | ||
| Key Benefit | Simplified Accounting Reconciliation | Reduced Sales Tax Compliance Burden |
Key Benefit QuickBooks Desktop by ParexSimplified Accounting Reconciliation Tax Rex ‑ Sales Tax AutomationReduced Sales Tax Compliance Burden | ||
| Data Entry Type | Shopify Sales Data to QuickBooks | Shopify Tax Data for Reporting |
Data Entry Type QuickBooks Desktop by ParexShopify Sales Data to QuickBooks Tax Rex ‑ Sales Tax AutomationShopify Tax Data for Reporting | ||
| Pricing | Not stated | Not stated |
Pricing QuickBooks Desktop by ParexNot stated Tax Rex ‑ Sales Tax AutomationNot stated | ||
Our Verdict
Choosing between QuickBooks Desktop by Parex and Tax Rex depends entirely on your business needs. If you're already using QuickBooks Desktop and want to automate the transfer of your Shopify sales data, QuickBooks Desktop by Parex is the clear choice. It streamlines your accounting processes by eliminating manual data entry. However, if you're struggling with the complexities of US sales tax, including reporting, filing, and nexus monitoring, Tax Rex is the better option. Tax Rex is designed to free you from the burden of sales tax compliance, allowing you to focus on growing your business. It automates the tax return filings. It is unlikely a merchant needs both as they solve independent issues.
Common Questions
Which app is easier to set up?
Based on descriptions, QuickBooks Desktop by Parex setup depends on existing QuickBooks Desktop setup. Tax Rex seems easier if new to Sales tax automation.
Which app is better for a new Shopify store?
If your store is in the US, Tax Rex is likely more crucial initially due to sales tax implications. QuickBooks Desktop by Parex becomes relevant later as accounting needs grow.
Does QuickBooks Desktop by Parex handle sales tax?
While it syncs sales data, including taxes, to QuickBooks, it doesn't manage the complexities of sales tax compliance like Tax Rex does. It acts as a data transfer tool.
Can Tax Rex integrate with QuickBooks Desktop?
The app descriptions do not state if there is any integration. They serve different functions with independent data streams.
If I use QuickBooks Online, is QuickBooks Desktop by Parex relevant?
No, QuickBooks Desktop by Parex is specifically for the desktop version of QuickBooks. You'd need a QuickBooks Online integration app.
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