Texas Sales Tax Nexus Safe Harbor 12 month period

A common question that we get asked is:

“I broke the Nexus threshold in Texas in 2002, but since then we have been well under the threshold and/or not even made any sales to Texas.”

That question is leading into the question, “do I even owe sales tax to the State of Texas?” The answer can be solved by explaining the Safe Harbor period for economic Nexus. 

Under the definition of a remote seller’s obligations, the rule provides that if a remote seller’s total Texas revenue for the preceding 12 calendar months is less than $500,000, the seller qualifies for the safe-harbor and is not required to obtain a Texas use tax permit or collect and remit tax on its Texas sales.

The regulation also provides that a remote seller who does obtain a permit and begins collection can terminate its Texas use-tax collection responsibility if it has 12 consecutive months in which its total Texas revenue for the preceding twelve calendar months was less than the $500,000 threshold. To effect termination, the seller must submit the form designated by the Comptroller: “Remote Seller’s Intent to Terminate Use Tax Responsibilities / Remote Seller Status – Form 01-798.”

Background

Texas requires remote sellers to collect and remit Texas sales tax if they have economic nexus, meaning:

• More than $500,000 in total Texas revenue

• Calculated over the previous 12 calendar months

Texas uses a rolling 12-month look-back period, sometimes referred to as a safe harbor, meaning you examine the total sales for the previous 12 months to determine whether collection obligations begin.

📘 Example Scenario

Remote Seller: ABC Outdoor Gear (No physical presence in Texas)

Monthly Texas Sales:

🧮 Step-by-Step Calculation

Step 1 – Add sales from the previous 12 months

Total Texas revenue for Jan–Dec:

**$20,000

• $25,000

• $40,000

• $35,000

• $45,000

• $30,000

• $55,000

• $60,000

• $50,000

• $65,000

• $70,000

• $75,000
  = $570,000**

✔ Result: ABC Outdoor Gear exceeded the Texas economic nexus threshold of $500,000.

📅 Step 2 – When does tax collection begin?

Texas requires a remote seller who exceeds $500,000 in the previous 12 months to:

• Begin collecting Texas sales tax on the first day of the fourth month after crossing the threshold.

Example

ABC crosses $500,000 as of December 31.

Therefore, the seller must begin collecting Texas tax on:

👉 April 1 of the following year

(4 months after December: Jan → Feb → Mar → Apr 1)

📌 Why It’s Called Safe Harbor

The rule prevents sellers from needing to register immediately if they momentarily cross $500,000—Texas checks the prior 12 months on a rolling basis.
If a seller drops below $500,000 in the last 12 months, they may still remain required to collect until the next annual evaluation period.

Texas Sales Tax Nexus Safe Harbor 12 month period