FAQs
FAQs Frequently Asked Questions
What is TrueBusiness iService?
A self-service online platform that helps business customers easily manage accounts, track usage, download reports, handle billing, and make secure online payments—all in one place. TrueBusiness e-Service streamlines operations, reduces paperwork, and ensures security at every step. It is a complete one-stop self-service solution for all business needs.
Choose the online management solution that best fits your business—all in one place.
More convenience in one click, anytime and anywhere
Perfect for businesses that value flexibility and self-management.
- Check your usage and billing details before payment
- Pay bills online and instantly download receipts and tax invoices in real time
- View and manage multiple accounts on a single screen
- Upload withholding tax (WHT) forms in one step
- Reduce paperwork and minimize accounting errors for faster and more accurate operations
- Sign up for TrueBusiness e-Service Click here
- RRegistration & User Guide for TrueBusiness e-Service Click
Click to watch the TrueBusiness e-Service video
How to Register for e-Service
Case 1: Corporate customers who have only one True or dtac number under the same business registration number.
Case 2: Corporate Customers with More Than One True or dtac Number or Using Other True/dtac Services Under the Same Business Registration Number
Payment options for corporate customers
Pay online easily with TrueBusiness iService. Receive your e-receipt instantly and handle withholding tax effortlessly. Just register, activate e-Bill and e-Tax, and start paying through TrueBusiness iService
For customer who appoint True as a withholding tax agent or handle withholding tax submissions themselves.
Pay via True Business iService — Quick Guide
- Register and log in
- Log in with the registered email.
- For business customers with 1 TrueMove H number, you can register and verify with an OTP — no documents needed.
- For customers with multiple numbers or other True products, complete the registration process first (if not already registered).
-
Go to “Bills & Payment” and choose a payment method
- Pay via PromptPay QR Code
- Pay via Credit/Debit Card
2.1 Paying with PromptPay QR Code- Select up to 50 bills, total not exceeding THB 150,000/transaction
- Search bills by product, branch name/number, or account name/number.
- Tap Create PromptPay QR Code → scan to pay.
- After successful payment, the screen will show confirmation, and you can view payment history anytime.
2.2 Paying with Credit/Debit Card- Select up to 50 bills, total not exceeding THB 25,000. Supports VISA, Mastercard, and JCB.
- Search bills by product, branch name/number, or account name/number.
- Enter card details or save the card for future use.
- Payment confirmation will appear on screen.
- Receive receipt/tax invoice.
- Instantly receive e-Receipt/e-Tax instantly via SMS/email (if subscribed). Otherwise, receive the physical document by mail within 5 business days.
- Get a receipt / tax invoice Receive instantly via SMS/email as an e-Tax invoice upon registration, or within 5 business days by mail.
- Required documents and details
- Bill statement, service number, or account number
- Original withholding tax certificate
- Payment amount
- If the customer submits the withholding tax: pay the net amount after withholding tax deduction.
- If True is appointed as the withholding tax agent: pay the full invoice amount. True will remit the withholding tax on your behalf.
- Receive the Receipt/Tax Invoice immediately
For corporate customers who appoint True as a withholding tax agent only.
Automatic Bank Account / Credit Card Payment
- Credit Card Auto‑Payment
Submit the application via email to truebusiness1239@truecorp.co.th or at any True Shop nationwide. Enterprise customers may submit documents through their account executive officer.
- Bank Account Auto‑Payment
Submit the application form at any convenient bank branch. Enterprise customers may submit documents through the bank counter or their account executive officer.
- Payment Amount
The full invoice amount will be deducted from your bank account or credit card.
- Receipt / Tax Invoice
You will receive an electronic receipt/tax invoice immediately after payment posting via SMS or email, or by post to your billing address within 5 business days.
Note for companies authorizing a representative.
Please attach:
- Power of Attorney signed by the authorized director with company seal and a THB 30 duty stamp
- Copy of the authorized director’s ID card (signed and certified)
- Copy of the authorized representative’s ID card (signed and certified)
Appoint true as a withholding tax agent
Advantages of appointing True as your withholding tax agent:
To simplify monthly tax management and ensure full compliance with Revenue Department regulations, appoint True as your withholding tax agent.
✔ Reduce document preparation and monthly tax filing steps
✔ Save time and streamline operations
✔ Minimize withholding tax calculation and submission errors
✔ Ensure compliance with regulatory requirements
✔ Improve convenience and speed of service payments
✔ Save time and streamline operations
✔ Minimize withholding tax calculation and submission errors
✔ Ensure compliance with regulatory requirements
✔ Improve convenience and speed of service payments
Appoint True as a Withholding Tax Agent
1
Download the form
Download the Withholding Tax Agent Appointment Agreement by service type
TrueMove H, True Online , True Visions2
Fill out the form
Complete the appointment section, have it signed by an authorized director, apply the company seal, and attach the document detailing the request for payment of stamp duty in cash for electronic instruments (Form A.S.9)
- Example of filling out the “Withholding Tax Agent Appointment Agreement”. (Download here)
- Guidelines for requesting e-stamp duty (Form A.S.9) (Download here) and an example of the document detailing the request for payment of stamp duty in cash for electronic instruments. (Download here)
3
Submit via email
Send the application to truebusiness1239@truecorp.co.th
with the subject line: Application for Appointment of True as Withholding Tax Agent, including the Business ID, Taxpayer Identification Number, or Company Name.
with the subject line: Application for Appointment of True as Withholding Tax Agent, including the Business ID, Taxpayer Identification Number, or Company Name.
4
Bill Payment Channel
Pay via True Business iService — Quick Guide
- Register and log in
- Log in with the registered email.
- For business customers with 1 TrueMove H number, you can register and verify with an OTP — no documents needed.
- For customers with multiple numbers or other True products, complete the registration process first (if not already registered).
-
Go to “Bills & Payment” and choose a payment method
- Pay via PromptPay QR Code
- Pay via Credit/Debit Card
2.1 Paying with PromptPay QR Code- Select up to 50 bills, total not exceeding THB 150,000/transaction
- Search bills by product, branch name/number, or account name/number.
- Tap Create PromptPay QR Code → scan to pay.
- After successful payment, the screen will show confirmation, and you can view payment history anytime.
2.2 Paying with Credit/Debit Card- Select up to 50 bills, total not exceeding THB 25,000. Supports VISA, Mastercard, and JCB.
- Search bills by product, branch name/number, or account name/number.
- Enter card details or save the card for future use.
- Payment confirmation will appear on screen.
- Receive receipt/tax invoice.
- Instantly receive e-Receipt/e-Tax instantly via SMS/email (if subscribed). Otherwise, receive the physical document by mail within 5 business days.
- Get a receipt / tax invoice Receive instantly via SMS/email as an e-Tax invoice upon registration, or within 5 business days by mail.
- Required documents and details
- Bill statement, service number, or account number
- Original withholding tax certificate
- Payment amount
- If the customer submits the withholding tax: pay the net amount after withholding tax deduction.
- If True is appointed as the withholding tax agent: pay the full invoice amount. True will remit the withholding tax on your behalf.
- Receive the Receipt/Tax Invoice immediately
For corporate customers who appoint True as a withholding tax agent only.
Automatic Bank Account / Credit Card Payment
- Credit Card Auto‑Payment
Submit the application via email to truebusiness1239@truecorp.co.th or at any True Shop nationwide. Enterprise customers may submit documents through their account executive officer.
- Bank Account Auto‑Payment
Submit the application form at any convenient bank branch. Enterprise customers may submit documents through the bank counter or their account executive officer.
- Payment Amount
The full invoice amount will be deducted from your bank account or credit card.
- Receipt / Tax Invoice
You will receive an electronic receipt/tax invoice immediately after payment posting via SMS or email, or by post to your billing address within 5 business days.
Note for companies authorizing a representative.
Please attach:
- Power of Attorney signed by the authorized director with company seal and a THB 30 duty stamp
- Copy of the authorized director’s ID card (signed and certified)
- Copy of the authorized representative’s ID card (signed and certified)
How can TrueBusiness customers pay bills at True Shop in 7-Eleven
TrueBusiness is committed to providing convenience for business customers, offering corporate customers the option to pay True Group bills at True Shop in 7-Eleven using cash, credit card (all branches), or cheque (available only at 125 branches in Bangkok). Customers can make payments every day from 10:00 AM to 5:00 PM.
The steps for making a payment are as follows:
- Prepare the required documents: the withholding tax deduction and remittance form. For added convenience, payment can also be made via banks, all Counter Service branches, and the following channels: Click here for Bill Payment, and Withholding Tax Certificate.
- Pay by cash, credit card, or cheque, and receive your receipt/tax invoice immediately.
Note: For customers who have appointed True as their agent.
How can business customers (registered as a juristic entity) sign up for the M2M | IoT Dashboard Management?
Business customers registered as a juristic entity can easily access the M2M | IoT Dashboard Management platform in three simple steps, as follows:
- Register via the TrueBusiness iService website: https://truebusinessiservice.truecorp.co.th/
- Once you receive the confirmation email, log in using the username and password created during the registration process.
- Access the M2M | IoT Dashboard by selecting “M2M Dashboard” from the left-hand menu. You will then be able to conveniently monitor SIM data usage and other related information through the dashboard.
*Please note: Access to the M2M Dashboard is reserved exclusively for customers who subscribe to the M2M | IoT SIM service.
**For more details, please [Click here]
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