When a shop changes a customer's oil and oil filter, does it charge sales tax on a lump-sum price or does it need to separately state and tax the materials?

Plain-English summary

A shop asked the Texas Comptroller's Tax Policy Division how to charge sales tax on oil changes. The response, signed by David Somerville of Tax Administration, confirms the shop may choose either of two billing methods for oil change services, and explains how sales tax works under each:

• Lump-sum billing: The charge for materials (oil, oil filter, etc.) is not separated from the labor charge — the customer sees one total price. Under this method, the shop does not collect sales tax from the customer on the lump-sum charge. Instead, the shop pays sales tax itself when it buys the oil and filter, and treats that tax as a cost factored into the lump-sum price it sets. If a lump-sum invoice happens to list a separate "tax" amount, that tax must still be remitted to the state unless it's refunded to the customer. A sales tax permit is not required if all of the shop's motor vehicle repair and maintenance services are billed lump-sum.
• Separated billing: The charge for materials (oil, oil filter, etc.) is stated separately from the labor charge. Under this method, the shop does collect sales tax from the customer, but only on the separately stated materials charge — not on the labor charge. Because the materials are being resold to the customer, the shop can give its supplier a resale certificate when buying the oil and filter (avoiding tax on that purchase). A sales tax permit is required to collect and remit tax on separated charges.

The letter includes example invoices for both methods, referenced Comptroller Rule 3.359 (on motor vehicle repair and maintenance services) for further detail, and closed with the standard reminder that the ruling is based on the facts submitted and other facts could yield different results. A header note on the letter as published on STAR flags that Rule 3.359 has since been repealed, and points readers to Rule 3.290 for current guidance on motor vehicle repairs.

What this means for you

Motor vehicle repair shops offering oil changes

You can choose whether to bill oil changes lump-sum or with materials and labor separately stated — the choice affects who collects tax and whether you need a sales tax permit. Lump-sum billing means you don't collect tax from the customer, but you pay tax on your own purchase of oil and filters and build that cost into your price. Separated billing means you collect tax from the customer on the materials portion only, and you can buy your oil and filters tax-free with a resale certificate — but you must hold a sales tax permit to do so.

Shops that bill everything lump-sum

If all of your motor vehicle repair and maintenance work is invoiced lump-sum, you are not required to hold a sales tax permit. Just remember you still owe (and must pay) sales tax on the oil, filters, and other materials you purchase to perform the work.

Shops that separately state materials and labor

You must collect sales tax on the materials charge (not the labor charge) and remit it, which requires a sales tax permit. In exchange, you can purchase the oil, filters, and similar materials tax-free from your supplier by issuing a resale certificate.

Accountants and tax professionals advising repair shops

Note the important caveat in the letter: even on a lump-sum invoice, if the invoice happens to show a separately listed tax amount, that amount must be remitted to the state unless refunded to the customer — simply calling an invoice "lump-sum" doesn't excuse tax already shown as collected. Also note that this letter's citation to Rule 3.359 is outdated; current Comptroller guidance on motor vehicle repairs is found in Rule 3.290.

Common questions

Q: Do I have to collect sales tax from the customer on a lump-sum oil change invoice?
A: No. On a lump-sum invoice (materials and labor not separated), you don't collect tax from the customer. Instead, you pay sales tax yourself when you purchase the oil and filter.

Q: Do I need a sales tax permit if I only do lump-sum oil changes?
A: No — a sales tax permit is not required if all of your motor vehicle repair and maintenance services are billed lump-sum.

Q: What if I separately state the materials and labor charges on the invoice?
A: You must collect sales tax from the customer on the separately stated materials charge (not on labor), and you need a sales tax permit to collect and remit that tax. You may also give your supplier a resale certificate to buy the oil and filter tax-free.

Q: What happens if a lump-sum invoice mistakenly lists a tax amount?
A: That tax must still be remitted to the state unless it is refunded to the customer.

Q: Is Rule 3.359, referenced in this 1995 letter, still in effect?
A: No — per the alert on the published letter, Rule 3.359 has been repealed. Current guidance on motor vehicle repairs is in Rule 3.290.

Citations and references

Administrative rules referenced in the original letter (superseded):

• 34 Tex. Admin. Code Rule 3.359 (Motor Vehicle Repair and Maintenance Services) — repealed; see Rule 3.290 for current guidance, per the STAR alert on this letter.

Source

• STAR search: https://star.comptroller.texas.gov/search?doc_type_code=L&tax_type_code=SST
• Opinion: https://star.comptroller.texas.gov/view/9506L1351G11

Original ruling text

ALERT: The cited rule, Rule 3.359 has been repealed. See Rule 3.290 for issues relating to Motor Vehicle repairs.

June 27, 1995

Dear ***:

Thank you for your letter concerning how to charge sales tax on oil changes.
We apologize for any confusion. You may decide the method (lump-sum or
separated) under which oil change services are sold to your customer. I will
review each method and how sales tax is handled. The enclosed Rule 3.359 has
additional information regarding motor vehicle repair and maintenance
services.

Lump-sum: Charges for materials (oil filter, oil, etc.) are not separated
from the labor used to change the oil and oil filters. Do not collect sales
tax from the customer on the lump-sum charges. Pay sales tax when purchasing
materials (oil filter, oil, etc.) used in the changing oil and oil filters.
The cost of sales tax paid on materials is an expense to consider when
determining the lump-sum price for the oil change service. However, if a
lump-sum invoice shows an amount for tax, the tax must be remitted to the
state if not refunded to the customer. A sales tax permit is not required
if all motor vehicle repair and maintenance services are lump-sum. The
following are examples of lump-sum invoices:

Oil Filter $10.00
Oil (6 Quarts at $2.00 a quart) $12.00
Total: $22.00

or

Complete Oil Change: $22.00

Separated: Charges for materials (oil filter, oil, etc.) are separately stated
from the labor used to change the oil and oil filters. Collect sales tax from
the customer on the separately stated charges for materials. Do not collect
sales tax on the separately charge for labor. A resale certificate may be given
to suppliers when purchasing materials sold to customers in separated invoices.
A sales tax permit is required to collect and remit sales tax on the separated
charges for materials. The following is an example of a separated invoice at
the City A tax rate:

Oil Filter $5.00
Oil (6 Quarts at $1.50 a quart) $9.00

Labor $8.00 Total
Materials: $14.00

7.25% Sales Tax on Materials: $1.02
Total: $23.02

This opinion is based on the facts you submitted. Other facts, though similar,
may yield different results. You may call me toll free at 1-800-531-5441, ext.
5-0030. The direct line is 512/475-0030. You may also write to Tax
Administration, Comptroller of Public Accounts.

Sincerely,

David Somerville
Tax Administration Division

NOTE: Previous Accession Number 9506189L