Where to pay your Dallas utilities bill depends on which utility serves your address
Dallas has two main electric providers and one gas utility, and each has its own payment system. Oncor Electric Delivery handles power lines across most of the Dallas area but does not bill you directly — instead, you pay a retail electric provider (REP) that buys power from Oncor's grid. Atmos Energy delivers natural gas to most Dallas homes and bills you directly. Some addresses in Dallas proper fall under City of Dallas municipal utilities, which handles both electric and gas.
Before you can pay, you need to know which utility actually serves you. Check your bill — it will show the company name and account number. If you do not have a recent bill, call the utility's customer service line or visit their website and enter your address. This step takes five minutes and saves you from paying the wrong company.
Key Takeaways
- Dallas electric customers pay a retail electric provider (REP), not Oncor, so your bill comes from a company like Reliant, TXU Energy, or another REP you chose or were assigned to.
- Atmos Energy bills most Dallas gas customers directly, and you can pay online, by phone, by mail, or in person at payment centers.
- City of Dallas municipal utilities customers can pay through the city's online portal, by phone, or at city payment locations.
- Setting up autopay saves time and helps you avoid late fees, which typically begin 15 to 20 days after the bill date.
- If you cannot pay your full bill, contact your utility before the due date — most offer payment plans that prevent service disconnection.
How to pay Atmos Energy (natural gas)
Atmos Energy serves gas to most Dallas addresses. You can pay your bill through four main routes: online at atmosenergy.com, by phone at 1-888-286-6700, by mail to the address on your bill, or in person at an Atmos payment center. Online and phone payments post within one business day. Mail payments take 7 to 10 days, so send them at least two weeks before your due date to avoid a late fee.
To pay online, log into your account on the Atmos website or use the Atmos mobile app. You will need your account number (on your bill) and a checking account or debit card. The site lets you set up one-time payments or recurring autopay. Autopay deducts your bill automatically each month on a date you choose, usually around your due date. This is the fastest way to ensure you never miss a payment.
If you pay by phone, have your account number and payment method ready. Atmos charges no fee for phone payments. If you mail a check, write your account number on the check and mail it to the address printed on your bill — do not mail it to a customer service office.
How to pay your retail electric provider (REP) in Dallas
Your electric bill comes from a retail electric provider, not from Oncor. The REP you pay depends on which company you chose when you signed up for service, or which one was assigned to you if you did not choose. Common REPs in Dallas include Reliant, TXU Energy, Gexa Energy, and Frontier Utilities, but there are dozens. Your bill will show your REP's name at the top.
Each REP has its own payment website and phone number. Visit your REP's website (search "[REP name] pay bill") and log in with your account number and password. Most REPs let you pay online, by phone, or by mail. Some also accept payments at third-party locations like grocery stores or convenience stores — check your bill or the REP's website for locations near you. Online and phone payments usually post within one business day.
Set up autopay through your REP's website if you want payments to happen automatically each month. This prevents accidental late payments and is especially useful if your bill amount changes month to month (which is common with variable-rate plans). You can change or cancel autopay anytime through your account.
How to pay City of Dallas municipal utilities
If your address is within Dallas city limits and served by City of Dallas utilities, you pay the city directly for both electric and gas. You can pay online through the city's utility payment portal at dallascityhall.com, by phone at 311 (or 214-671-3111 from outside Dallas), by mail, or in person at a city payment location.
Online payments through the city portal post within one business day. Phone payments also post quickly. Mail payments take 7 to 10 days, so send them early. In-person payments at city hall or other city locations are processed immediately. The city charges no fee for any payment method.
You can set up autopay through the city portal to have your bill deducted automatically each month. This is the most reliable way to avoid late fees and service interruptions.
What happens if you miss a payment deadline
Late fees typically begin 15 to 20 days after your bill date, depending on your utility. The fee is usually a percentage of your bill or a flat amount — check your bill or your utility's website for the exact amount. If you are more than 30 days late, your utility may send a disconnection notice warning that service will be shut off if you do not pay within a set number of days (usually 10 to 15).
If you cannot pay your full bill by the due date, contact your utility before the deadline. Atmos Energy, most REPs, and the City of Dallas all offer payment plans that let you spread the cost over several months. These plans prevent disconnection and give you time to catch up. You may need to pay a portion of the bill upfront and the rest in installments. Call your utility's customer service number to discuss a plan.
Setting up autopay to avoid missed payments
Autopay is the simplest way to ensure your bill is paid on time every month. Once you set it up, your utility or REP deducts the amount from your bank account or charges your debit card on a date you choose — usually a few days before your due date. You can change the payment date or cancel autopay anytime through your online account.
To set up autopay, log into your utility account online and look for "autopay," "automatic payments," or "recurring payments" in the settings or billing section. You will need to provide a checking account number or debit card number. Most utilities do not charge a fee for autopay. Once it is active, you will still receive a bill each month showing what was charged, so you can spot errors or unusual usage.
If your bill amount varies significantly month to month (which happens with variable-rate electric plans), autopay still works — your utility will charge the amount shown on your bill each month. This protects you from late fees even when the bill is higher than expected.
Comparing payment methods by speed and convenience
| Payment Method | Processing Time | When to Use |
|---|---|---|
| Autopay (online) | Automatic on your chosen date | Best for avoiding late fees; set it and forget it |
| Online portal | 1 business day | Good if you want to pay a specific amount or date without autopay |
| Phone payment | 1 business day | Use if you prefer speaking to someone or do not have online access |
| In-person payment | Immediate | Use if you need proof of payment the same day |
| 7–10 days | Only if other methods are unavailable; send at least 2 weeks before due date |
Frequently Asked Questions
Can I pay my electric and gas bills together in Dallas?
No. If you have both Atmos gas and a REP for electric, you pay two separate bills to two separate companies. If you have City of Dallas utilities, you pay one bill to the city for both services. Check your bills to see how many companies you are paying.
What if I do not know which REP I use?
Look at your electric bill — the REP name appears at the top. If you cannot find a recent bill, call Oncor at 1-888-313-4747 and give them your address. They will tell you which REP is assigned to your account, and you can then contact that REP directly to set up payment.
Do I have to pay the full bill amount, or can I pay part of it?
You can pay part of your bill anytime, but you will owe the full amount by the due date to avoid a late fee. If you cannot pay in full, contact your utility to set up a payment plan before the due date. Most utilities will not disconnect service if you have an active payment plan.
What if my payment does not show up in my account?
Online and phone payments usually post within one business day. If more than one business day has passed and the payment is not showing, log into your account and check the payment status, or call your utility's customer service line. Have your confirmation number ready if you made the payment online.
Can I change my due date?
Most utilities let you request a different due date by calling customer service or through your online account. This is helpful if your due date falls on a day when you do not have funds available. Some utilities charge a small fee to change your due date, so ask before you request the change.