TaxJar Sales Tax Automation

TaxJar Sales Tax Automation by TaxJar

Spend time on your Miva store. Not sales tax. Easily connect your store to enjoy instant, accurate sales tax calculations & reports. Sign up for a free trial.


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Version 1.0006 View install docs (HTML) Get Support

Sales Tax Calculations for All Miva Merchants. - TAXJAR CERTIFIED INTEGRATION

TaxJar Certified

Let TaxJar automate your sales tax calculations, reporting, and filings in minutes. When it comes to sales tax, collecting is the easy part. Everything else is hard. TaxJar makes it easy. See why we're trusted by more than 15,000 eCommerce businesses every month.

Key features
  • Connect TaxJar to your Miva store and any other channels where you sell
  • Enjoy instant, accurate sales tax calculations at checkout
  • TaxJar instantly prepares sales tax reports for any state and calculates how much you owe in each city, county, etc
  • Enroll in Autofile, save hours each month and never file a manual return again
  • World-class customer support for all customers. When you partner with TaxJar, you’ll gain access to an experienced team of professionals who understand the ins and outs of sales tax.
  • Simple affordable pricing plans for all size merchants with TaxJar Basic and TaxJar Plus
  • TaxJar Plus is our premium solution to manage sales tax when the complexities of sales volume, state nexus and platform needs have multiplied. Learn more at
Download on the Miva app store and sign up on to get started.
Release Notes
Version 1.0006
Released 1/14/2020

TaxJar Nexus Region region code should be optional always for international regions

Version 1.0005
Released 12/13/2019

New Features

  • Users can now manage their Nexus Regions within Miva Merchant by using the third Nexus Regions option: ‘Calculate Using Miva Merchant Configured Nexus Regions.
  • Using ‘Calculate Using Miva Merchant Configured Nexus Regions’ will send a list of Nexus Regions and allow usage of multiple international TaxJar Nexus regions
  • Users are now able to manually update their Nexus Regions using the button in the Nexus Regions batchlist, in addition to the old location in Utilities

Bugs Fixed

  • TAXJAR-40: Clear cached sales tax data when shipping method changes
  • TAXJAR-43: Support for Multiple International Nexus Regions
  • TAXJAR-44: Clear cached sales tax data when basket subtotal changes
  • TAXJAR-46: All tax categories are not being downloaded correctly
  • TAXJAR-51: TaxJar settings, Last updated fields get reset to Never after switching tabs.

Version 1.0004
Released 10/2/2019

Bugs Fixed
- recalculate taxes and update taxjar order can cause order subtotal to be incorrect.
- product_tax_code field is not correctly populated for inventoried variants.
- Rate call and taxjar insert/update don’t always get the same product tax code

Version 1.0003
Released 5/29/2019

Bugs Fixed

- incorrect customer parameter being passed for transactions
- Pass plugin parameter for tax and transaction API calls

Version 1.0002
Released 5/21/2019

Bugs Fixed
   30918: "Not authorized for route 'GET /v2/nexus/regions'" error with a valid production API token on new install
   30919: Product tax codes are not sent when creating TaxJar transactions
   30920: TaxJar customer IDs are not sent when creating TaxJar transactions
   30921: Transactions should be created regardless of nexus when "Automatically Create TaxJar Transactions" is enabled
   30923: Prefix transaction_ids with store code and order number
   32144: Instead of a new item, distribute discounts proportionally among
   32148: Track and transmit item-level sales tax to TaxJar when creating transactions

New Features
   30924: Feature Request: Configurable timeout and fallback rate calculation
   30922: Feature Request: Identify Marketplaces orders when creating transactions

Version: 1.001
Bugs Fixes
 - non-inventoried attributes don’t have the attribute price added to the call for tax calculation.
 - insert taxjar order from admin causes fatal error when product discounts are present.
 - Add the store's address to the Tax Jar Settings table

Version 1.000

Inital Release including functionality for:

- SmartCalc Real Time Tax Rates
- Trasnactions (pushing orders to TaxJar)
- Product Categories
- Nexus Locations
- Manually Updating or Deleting Transactions in TaxJar
- Historical Order Import (via Batch Report)
- Updating or Nexus locations and Product Categories
Developer Info



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