Southwest Gas online bill pay lets you settle your account from your computer or phone without writing a check or calling in
Southwest Gas operates an online payment portal where you can log in with your account number and make a one-time payment or set up automatic recurring payments. The portal is free to use and takes a few minutes to complete. You can pay from a checking account, savings account, or debit card — credit cards are not accepted for online payments.
Payments typically post to your account within one business day if you submit them before 5 p.m. Mountain Time on a business day. Weekend and holiday submissions process the next business day. You do not need to be enrolled in automatic payments to use the one-time payment option, and you can cancel automatic payments at any time through the same portal.
Key Takeaways
- You can pay online through Southwest Gas's website using your account number, checking account, savings account, or debit card.
- One-time payments post within one business day if submitted before 5 p.m. Mountain Time on a weekday.
- Automatic payments can be set up or cancelled anytime through your online account without calling customer service.
- Southwest Gas does not charge a fee for online payments made from a bank account, though some banks may charge their own fees.
- If you do not have internet access, you can still pay by phone, mail, or in person at a payment location.
How to set up your online account and make a payment
Go to the Southwest Gas website and look for the "Pay My Bill" or "Online Account" link. You will need your account number, which appears on your bill or in any recent correspondence from Southwest Gas. Click the option to create a new online account if you do not already have one.
Enter your account number and the zip code associated with your service address. Southwest Gas will send a verification code to the email address you provide. Check your email (including spam folders) and enter that code to confirm your identity. Once verified, you can create a username and password for future logins.
After logging in, select "Make a Payment" or "Pay Now." Choose whether you want to pay from a checking account, savings account, or debit card. Enter the routing number and account number for a bank account, or the card number and expiration date for a debit card. Confirm the amount you want to pay and the date you want it to process. Review the details and submit.
Setting up automatic monthly payments
Automatic payments remove the step of logging in each month. Once you are logged into your account, look for an "Autopay" or "Automatic Payments" section. Select the bank account or debit card you want to use, and choose whether you want the payment to happen on a fixed date each month (such as the 15th) or on your bill due date.
Southwest Gas will process the payment automatically on the date you choose. You will still receive a bill showing what was charged, so you can verify the amount is correct. If your bill amount changes significantly from month to month, you may want to stick with one-time payments instead so you can review the amount before paying.
To cancel automatic payments, log back into your account and select the option to stop or remove the autopay arrangement. The cancellation takes effect immediately, though any payment already scheduled for the next few days may still process. Contact Southwest Gas customer service if a payment processes after you cancel and you need a refund.
What to do if your payment does not post
If you submitted a payment and it has been more than one business day, log back into your account and check the payment history section. This shows all payments submitted in the past 30 to 90 days, along with their status — whether they are pending, processed, or failed.
A payment may fail if the bank account or debit card information was entered incorrectly, if the account has insufficient funds, or if the card has expired. If you see a failed payment, try submitting again with corrected information. If the payment shows as pending but more than two business days have passed, contact Southwest Gas customer service with the confirmation number from your submission.
Keep a record of your confirmation number and the date and amount you submitted. If Southwest Gas applies a late fee to your account and you can show proof that you submitted payment on time, you may be able to request that the fee be removed.
Payment options if you cannot use online bill pay
If you do not have internet access or prefer not to pay online, Southwest Gas accepts payments by phone at 1-888-749-7243. A representative can process a one-time payment from your bank account or debit card over the phone. There is no fee for this service.
You can also mail a check or money order to the address shown on your bill. Include your account number on the check and allow 7 to 10 business days for the payment to arrive and post. Some areas have in-person payment locations where you can pay cash, check, or debit card — call customer service to find a location near you.
If you are struggling to pay your bill, Southwest Gas offers budget billing and hardship programs. Budget billing spreads your annual gas costs evenly across 12 months so your bill is more predictable. Hardship programs may defer or reduce payments if you meet income requirements. Ask about these options when you call customer service.
Fees and what to watch for
Southwest Gas does not charge a fee when you pay online from a checking or savings account. However, some banks charge their own fees for electronic bill payments or transfers. Check with your bank before setting up automatic payments if you are concerned about fees.
Debit card payments through Southwest Gas's online portal may carry a small processing fee — check the payment screen before you submit to see if a fee applies. This fee is separate from any fee your bank or card issuer might charge.
Do not confuse Southwest Gas's official online payment portal with third-party bill payment services. Only use the payment method offered directly through Southwest Gas's website or phone line to avoid scams or unauthorized charges.
Frequently Asked Questions
Can I pay my Southwest Gas bill with a credit card online?
No. Southwest Gas's online portal accepts checking accounts, savings accounts, and debit cards only. Credit cards are not accepted for online payments. If you want to pay with a credit card, you would need to call customer service, though they may also decline credit cards depending on your account type.
What time should I submit my payment to make sure it posts today?
Submit before 5 p.m. Mountain Time on a business day (Monday through Friday, excluding holidays). Payments submitted after 5 p.m. or on weekends will post the next business day. If you are unsure of the current time in Mountain Time, check a time zone converter before submitting.
Can I change or cancel a payment after I submit it?
If the payment is still pending (not yet processed), you may be able to cancel it through your online account. Once a payment shows as processed, it cannot be cancelled — you would need to contact customer service to request a refund. Always check the payment status before assuming it went through.
Do I have to use the same bank account for automatic payments every month?
No. You can change the bank account or debit card linked to your automatic payment at any time by logging into your account and editing the autopay settings. The new payment method will be used for the next scheduled payment.
What happens if I move and my service address changes?
Update your service address in your online account as soon as you know the change date. Your account number may change when you move, so you will need to log in with the new account number after the move is complete. Contact Southwest Gas to confirm the new account number if you are unsure.