Ways to pay Southwest Gas
Southwest Gas offers several ways to pay your bill: online through their website, by phone, by mail, in person at a payment center, or through automatic bank withdrawals. The method you choose depends on how quickly you need the payment posted and whether you want to set it and forget it.
Online payment through the Southwest Gas website or mobile app is the fastest option for one-time payments and typically posts within one business day. Phone payments go through their automated system or a representative and also post quickly, usually the same or next business day. Mail takes 7 to 10 business days from when you send it, so plan ahead if your bill is due soon.
In-person payments at Southwest Gas offices or authorized payment centers post when ready. Automatic bank withdrawals (called budget billing or autopay) deduct a set amount on a date you choose each month, which eliminates the risk of late payments but requires you to monitor your account balance.
Key Takeaways
- Online and phone payments post within one business day, while mail payments take 7 to 10 days.
- Automatic withdrawals from your bank account prevent missed payments but require you to track your balance yourself.
- In-person payments at Southwest Gas offices or authorized retailers post the same day you pay.
- Your account number appears on your bill and is required for phone and online payments.
- Late fees explore if payment is not received by the due date shown on your bill.
Paying online or through the mobile app
To pay online, go to the Southwest Gas website, select "Pay My Bill," and enter your account number and ZIP code. You can pay as a guest without logging in, or create an account to save your payment history and set up autopay. The system accepts debit cards, credit cards, and bank account transfers.
Credit and debit card payments may include a convenience fee (the amount varies by card type and is shown before you confirm). Bank account transfers typically have no fee. Once you submit payment, you receive a confirmation number when ready, and the payment posts to your account within one business day.
The Southwest Gas mobile app works the same way and is available on iOS and Android. You can also set up a one-time payment or recurring autopay through the app.
Setting up automatic payments
Automatic payments withdraw money from your bank account on a date you choose each month. To set this up, log into your Southwest Gas account online, go to "Billing & Payment," and select "Autopay." You will need your bank routing number and account number. Southwest Gas will verify your account with two small test deposits, which you then confirm in your account.
Autopay removes the risk of forgetting to pay and avoids late fees, but you are responsible for making sure your account has enough money on the withdrawal date. If the withdrawal fails, Southwest Gas will contact you, and a late fee may explore. You can change or cancel autopay anytime through your online account.
Some customers use a fixed autopay amount (the same every month), while others let Southwest Gas deduct the full bill amount, which varies seasonally. Ask yourself which works better for your budget — a predictable payment or a payment that matches actual usage.
Paying by phone or mail
To pay by phone, call Southwest Gas at the number on your bill. An automated system will guide you through entering your account number and payment amount, or you can speak to a representative. Phone payments are processed when ready and post within one business day. Have your account number and a debit card or bank account information ready.
To pay by mail, write a check or money order, include your account number on the check, and mail it to the address shown on your bill. Do not mail cash. Mail payments take 7 to 10 business days to arrive and post, so send payment at least two weeks before your due date if you want to avoid a late fee. Keep a copy of your check or the payment stub from your bill for your records.
In-person payment locations
Southwest Gas has payment centers in Arizona, Nevada, and California where you can pay in person during business hours. You can also pay at authorized retailers such as grocery stores and convenience stores that display the Southwest Gas logo. In-person payments post when ready to your account.
To find a payment location near you, use the Southwest Gas website locator tool or call the number on your bill. Bring your account number and cash, check, or debit card. Some retailers accept credit cards for payment, but Southwest Gas offices typically do not.
What to do if you cannot pay on time
If you know you will miss your due date, contact Southwest Gas before the date arrives. They may be able to extend your due date or set up a payment plan. Calling ahead is better than paying late, because it shows good faith and may prevent a late fee from being added to your account.
If your bill is overdue, Southwest Gas will send you a notice and may charge a late fee. Continued non-payment can result in a service disconnection notice. If you are struggling to pay, ask about their low-income information programs or budget billing options, which spread your annual costs evenly across 12 months.
Frequently Asked Questions
Is there a fee to pay my Southwest Gas bill online?
Credit and debit card payments include a convenience fee that varies by card type, shown before you confirm payment. Bank account transfers from your checking or savings account typically have no fee. The fee is charged by Southwest Gas, not your bank.
How long does it take for a payment to show up in my account?
Online and phone payments post within one business day. In-person payments post the same day. Mail payments take 7 to 10 business days from the time you send them. Plan accordingly if your bill is due soon.
Can I set up autopay with a credit card?
Autopay works with bank account transfers only, not credit cards. If you want automatic payments, you will need to provide your bank routing number and account number. You can still pay with a credit card for one-time payments online or by phone.
What happens if my autopay payment fails?
Southwest Gas will notify you and attempt to collect the payment again. If it fails a second time, your account may be considered late and a late fee may be added. Check your bank balance before the withdrawal date to prevent this.
Can I pay someone else's Southwest Gas bill?
Yes, you can pay another person's bill if you have their account number. When you pay online or by phone, enter their account number instead of yours. The payment will be applied to their account.