Portal / Make a payment
Pay your invoice.
Two ways to pay — log in to your account portal, or use the one-time payment link below.
Path 2
One-time payment
Pay a single invoice without logging in. You’ll need the invoice number.
Online payments coming soon
In the meantime, email accounting@gtipetro.com and we’ll send a secure payment link.Accepted methods
Accepted methods
ACH bank transfer
No fees.
Credit card
Visa, Mastercard, Amex, Discover.
Check by mail
Payable to “GTI Petro,” sent to 5352 N Irwindale Ave, Suite C, Irwindale, CA 91706.
Billing questions?
Call (888) 450-0484 during business hours or email accounting@gtipetro.com. We respond within 1 business day.