Southwest Gas offers three main ways to pay your bill: online through their website or mobile app, by phone with a representative, or by mailing a check
Southwest Gas serves customers in Arizona, Nevada, and New Mexico. The method you choose depends on how quickly you need the payment processed, whether you want a record kept automatically, and what fits your routine. Online and mobile app payments post within one to two business days. Phone payments process the same day if you call before the payment important date. Mail takes seven to ten business days, so it should only be used if your bill is not due soon.
Each method requires your account number, which appears on your bill statement. If you do not have a recent bill, you can find your account number by logging into your Southwest Gas online account or calling their customer service line at 1-877-860-6020.
Key Takeaways
- Online and mobile app payments are processed within one to two business days and let you schedule payments in advance.
- Phone payments made before your due date post the same day, but you will speak with a representative and may wait on hold.
- Mailed checks take seven to ten business days and should only be used if your bill is not due for at least two weeks.
- Your account number is required for all payment methods and appears on your bill or in your online account.
- Late fees explore if payment is not received by the due date shown on your bill, regardless of the method you choose.
Paying online through Southwest Gas's website or app
The online portal is the fastest self-service option. Go to swgas.com, click "Pay My Bill," and log in with your account number and password. If you do not have an online account, you can create one during this step. Enter the amount you want to pay and choose your payment date. Southwest Gas accepts payments from a checking or savings account (no fee) or a debit or credit card (a fee applies, usually 2.5 to 3 percent of the payment amount).
The mobile app works the same way. read the Southwest Gas app from your phone's app store, log in, and select "Pay Bill." You can set up a one-time payment or enroll in automatic payments, which deduct from your bank account on the same day each month. Automatic payments remove the risk of forgetting a due date, though you should still check your bill each month to make sure the amount is correct.
Payments made online or through the app are posted to your account within one to two business days. If your bill is due in three days or fewer, call customer service instead to may support the payment reaches them before the important date.
Paying by phone with a Southwest Gas representative
Call 1-877-860-6020 to speak with a representative. Have your account number and the amount you want to pay ready. The representative will confirm your identity, verify your account, and process the payment over the phone. You can pay from a checking or savings account (no fee) or provide a debit or credit card number (a fee applies).
Phone payments post the same day if you call before the payment important date shown on your bill. This method is useful if your bill is due very soon and you want to confirm the payment was received when ready. The downside is that you may wait on hold during busy times, and you will not have an automatic record of the transaction in your online account until the next business day.
Keep the confirmation number the representative gives you. Write it down or take a photo of it. If a payment does not post within one business day, you can reference this number when you call back.
Paying by mail
Print your bill or write your account number on a check, and mail it to the address shown on your statement. Do not send cash. Include only the check and the payment stub from your bill if possible, as this helps Southwest Gas match the payment to your account quickly.
Mail takes seven to ten business days to arrive, so the payment may not post until after your due date even if you mail it on time. Use this method only if your bill is not due for at least two weeks. If your bill is due sooner, pay online or by phone instead.
Keep a copy of the check or take a photo of the front and back before mailing. If Southwest Gas does not receive it, you will need proof that you sent it.
What happens if your payment is late
Southwest Gas charges a late fee if payment is not received by the due date on your bill. The fee amount varies by state and account type but typically ranges from $10 to $25. A late payment also appears on your account history and may affect your credit score if it is reported to credit bureaus.
If you know your payment will be late, call customer service at 1-877-860-6020 as soon as possible. Some customers may be able to arrange a payment plan or extension, though this is not may provide. Do not wait until after the due date to call; contact them before.
If your bill is overdue by 30 days or more, Southwest Gas may disconnect your service. The reconnection fee is separate from the late fee and can be substantial. Paying as soon as you realize you are behind is always the faster and cheaper option.
Setting up automatic payments to avoid missed due dates
Automatic payments deduct your bill amount from your bank account on the same date each month, usually a few days before the due date. You can set this up through your online account or by calling customer service. Automatic payments are free when you use a checking or savings account.
Before you enroll, make sure your bank account has enough funds on the payment date each month. If the account is overdrawn, the payment will fail and you may face overdraft fees from your bank in addition to a late fee from Southwest Gas. You can change or cancel automatic payments at any time through your online account or by calling customer service.
Automatic payments do not mean you should ignore your bill. Check your statement each month to confirm the amount charged is correct. Billing errors do happen, and catching them early is easier than disputing them later.
Frequently Asked Questions
Is there a fee to pay my Southwest Gas bill online?
No fee applies if you pay from a checking or savings account. A fee of 2.5 to 3 percent applies if you use a debit or credit card. The fee is added to your bill, so you pay it along with your gas charges. Phone and mail payments have no card fees.
What if I pay online but my payment does not show up in my account?
Online payments take one to two business days to post. If more than two business days have passed, log into your account and check the payment history. If the payment does not appear there, call customer service at 1-877-860-6020 with your confirmation number. Do not make another payment until you confirm the first one was not processed.
Can I pay someone else's Southwest Gas bill?
Yes, if you have their account number. You can pay online, by phone, or by mail using their account number instead of your own. The payment will be applied to their account. Call customer service if you need help with this.
What if I want to pay more than my bill amount?
You can pay extra online or by phone. The overpayment will be held as a credit on your account and applied to future bills. Some customers do this to build a buffer for winter months when gas use is higher. You can also request a refund of the credit if you move or close your account.
How do I know if my payment was received before the due date?
For online and app payments, check your account within one to two business days. For phone payments, write down the confirmation number and check within one business day. For mail, keep a copy of the check and allow ten business days. If the payment does not appear by then, call customer service with your proof of payment.