// each section has a full-width container on the top and bottom if you need the content to run the full width of the page.
You can copy/paste the content from any editable area into another and it'll adapt to the shape of the new container.
Highest rated sales tax app for Shopify
Paragraph
// There is a form below this content - it'll shrink up if it's not used
// each section has a full-width container on the top and bottom if you need the content to run the full width of the page.
You can copy/paste the content from any editable area into another and it'll adapt to the shape of the new container.
// when there is no content in the top or bottom containers, they can be used to create vertical space instead
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
// when there is no content in the top or bottom containers, they can be used to create vertical space instead
// each section has a full-width container on the top and bottom if you need the content to run the full width of the page.
You can copy/paste the content from any editable area into another and it'll adapt to the shape of the new container.
"When [a TaxJar Competitor] filed a zero return in California by mistake, TaxJar was able to file the correct return and rectify the problem."
"When people ask me who is my favorite company to work with, I say TaxJar."
"We were having to export .csv files out of our system, import them into Avalara and then deduplicate the data so we didn’t over report."
// each section has a full-width container on the top and bottom if you need the content to run the full width of the page.
You can copy/paste the content from any editable area into another and it'll adapt to the shape of the new container.
// each section has a full-width container on the top and bottom if you need the content to run the full width of the page.
You can copy/paste the content from any editable area into another and it'll adapt to the shape of the new container.
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
// each section has a full-width container on the top and bottom if you need the content to run the full width of the page.
You can copy/paste the content from any editable area into another and it'll adapt to the shape of the new container.
// each section has a full-width container on the top and bottom if you need the content to run the full width of the page.
You can copy/paste the content from any editable area into another and it'll adapt to the shape of the new container.
Company Name Goes Here
Company Name Goes Here
The right rate, every time
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation. Do eiusmod tempor incididunt ut labore.
The right rate, every time
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation. Do eiusmod tempor incididunt ut labore.
The right rate, every time
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation. Do eiusmod tempor incididunt ut labore.
// each section has a full-width container on the top and bottom if you need the content to run the full width of the page.
You can copy/paste the content from any editable area into another and it'll adapt to the shape of the new container.
| TaxJar Basic | TaxJar Plus | |
|---|---|---|
| Feature row header | ||
| Feature Name |  |
 |
| Feature Name | |
|
| Feature Name | |
|
| Feature row header | ||
| Feature Name | 500 | 10,000+ |
| Feature Name (Feature subtext and link) |
|
|
| Feature Name | |
|
// each section has a full-width container on the top and bottom if you need the content to run the full width of the page.
You can copy/paste the content from any editable area into another and it'll adapt to the shape of the new container.
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
// each section has a full-width container on the top and bottom if you need the content to run the full width of the page.
You can copy/paste the content from any editable area into another and it'll adapt to the shape of the new container.
// each section has a full-width container on the top and bottom if you need the content to run the full width of the page.
You can copy/paste the content from any editable area into another and it'll adapt to the shape of the new container.
"When [a TaxJar Competitor] filed a zero return in California by mistake, TaxJar was able to file the correct return and rectify the problem."
"When people ask me who is my favorite company to work with, I say TaxJar."
"We were having to export .csv files out of our system, import them into Avalara and then deduplicate the data so we didn’t over report."
// each section has a full-width container on the top and bottom if you need the content to run the full width of the page.
You can copy/paste the content from any editable area into another and it'll adapt to the shape of the new container.
// each section has a full-width container on the top and bottom if you need the content to run the full width of the page.
You can copy/paste the content from any editable area into another and it'll adapt to the shape of the new container.
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
// each section has a full-width container on the top and bottom if you need the content to run the full width of the page.
You can copy/paste the content from any editable area into another and it'll adapt to the shape of the new container.
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
// when there is no content in the top or bottom containers, they can be used to create vertical space instead
115+ Reviews
40+ Reviews
20+ Reviews
75+ Reviews
30+ Reviews
20+ Reviews
// when there is no content in the top or bottom containers, they can be used to create vertical space instead
// when there is no content in the top or bottom containers, they can be used to create vertical space instead
Join more than 15,000 businesses and developers who trust TaxJar each month:
// when there is no content in the top or bottom containers, they can be used to create vertical space instead
TaxJar’s API has introduced versioning via a headers parameter, ‘x-api-version’. The ‘x-api-version’ can be specified at your software integration’s level. The most recent version of this parameter is:
‘x-api-version’: ‘2020-08-07’
With this release comes mathematical validation of your API calls.
On July 1, 2021, the TaxJar API will enforce these mathematical validations by default. The reason for this is because of TaxJar reporting and filing discrepancies that cause delays in our ability to timely file your returns.
We are informing our technology partners and customers now so that they may take advantage of correcting issues caused by bad math before July 1, 2021. This will prevent unforeseen issues when our customers have the new validations enabled.
For TaxJar’s API reference regarding this update, see our Developer Documentation.
If you use TaxJar for transaction reporting by sending us order and refund data, your integration may be affected.
Without taking advantage of ‘x-api-version’: ‘2020-08-07’, requests to the TaxJar API that include bad math will return the following:
{
"status": 400,
"error": "Bad Request",
"detail": "amount must be equal to the sum of line items and shipping, excluding sales tax."
}
This error means that the transactions will not be created in TaxJar because of arithmetical discrepancies between the request body level ‘amount’ and ‘line_items’ details.
When transactions fail to sync to TaxJar, they will not be available in your list of transactions or your state reports. If your integration was built by TaxJar, we include methods of reviewing transactions that failed to sync for you directly in the integration.
If your integration was built by one of TaxJar’s certified partners, we have informed and communicated this information to them. No actions are required on the customer’s part as our partners are diligently working toward including the updates.
If your integration was not built by TaxJar or a TaxJar certified partner, you may need to contact your software developer(s) or the third-party which has built the integration. You will need to ensure you have the ability to review failed transaction API calls to TaxJar. We recommend taking advantage of the ‘x-api-version’: ‘2020-08-07’ in your API request headers as soon as possible to avoid missing transactions.
Why are there API failures or discrepancies?
The reasons for transactions resulting in discrepancies can vary and depend on how your software interacts with constructing transaction API calls. For this reason, it is difficult to advise on what precisely must be corrected.
The most common causes are when the sum of ‘line_items’ does not match the subtotal in the ‘amount’. More context is provided below. However, know that these issues result in customer state reports misrepresenting either gross, discounted, or sales tax amounts. The resulting issues require manual intervention and review by your customers, our support teams, and engineers.
In the below refund example, note that the sum of ‘line_items’ + ‘shipping’ does not equal the ‘amount’:
{
"transaction_id": "refund-0001",
"transaction_date": "2021-01-07",
"from_street": "9663 Santa Monica Blvd",
"from_city": "Beverly Hills",
"from_zip": "90210-4705",
"from_state": "CA",
"from_country": "US",
"to_street": "9663 Santa Monica Blvd",
"to_city": "Beverly Hills",
"to_zip": "90210-4705",
"to_state": "CA",
"to_country": "US",
"line_items": [{
"product_tax_code": "",
"product_identifier": "FW-01",
"sales_tax": -0.48,
"quantity": 1,
“Discount”: 0,
"description": "Fuzzy Widget 01",
"unit_price": -5.00
}, {
"product_tax_code": "",
"product_identifier": "MW-01",
"sales_tax": -0.48,
"quantity": 1,
“Discount”: 0,
"description": "Metal Widget 01",
"unit_price": -5.00
}
],
"sales_tax": -0.96,
"shipping": -10,
"amount": -15.00
}
The true ‘amount’ should equal -20.00. This works out from the following:
-5.00 (first line_item)
+ -5.00 (second line_item)
+ -10.00 (shipping)
= -20.00 (amount)
Reasons for why the request body could be built incorrectly may depend. Developers should review the following:
1) Identify what methods and code define
Without the TaxJar API update to either have ‘x-api-version’: ‘2020-08-07’ included or enabled by default on July 1, 2021, the above example request would not result in an error. However, it would cause issues on your reporting, delay filing, and likely happen again.
TaxJar makes eCommerce easier for businesses
and developers by automating sales tax for
more than 20,000 customers every month.
© 2025 TaxJar. TaxJar is a trademark of TPS Unlimited, Inc. Privacy, Security & Terms of Service
