Washington Gas offers three main online payment methods: through your account on their website, by phone, or through their mobile app
The fastest route is logging into your account at wgasonline.com and paying directly from the "Pay My Bill" section. You can also call their automated payment line at 844-WGas-PAY (844-934-2729) to pay by phone without logging in, or download the Washington Gas mobile app from your phone's app store and pay from there. All three methods process payments the same day if you submit before their cutoff time, which is typically 5 p.m. Eastern on business days.
You do not need to create an account to pay by phone, but having one online lets you see your balance, due date, and payment history in one place. If you do not have an account yet, you can set one up at wgasonline.com using your account number (found on your bill) and zip code.
Key Takeaways
- Pay online at wgasonline.com, by phone at 844-934-2729, or through the Washington Gas mobile app — all three methods charge no fee.
- Payments submitted before 5 p.m. Eastern on business days post the same day; weekend and holiday submissions post the next business day.
- You can set up automatic recurring payments so your bill is paid on the same date each month without logging in again.
- If you pay by mail, allow at least 10 business days for the check to arrive and post to your account.
- Late payment fees apply if your bill is not paid by the due date shown on your statement, even if you submitted payment before that date.
Paying through your Washington Gas online account
Go to wgasonline.com and enter your account number and password. If you have not set up an account, click "Register" and use your account number and zip code to create one. Once logged in, select "Pay My Bill" or "Make a Payment" from the menu.
Enter the amount you want to pay — you can pay the full balance, a partial amount, or a different amount if you prefer. Choose your payment date (today or a future date) and your payment method: bank account (ACH transfer) or debit or credit card. Bank account payments are free; card payments may carry a small fee depending on the card type. Review the details and click "Confirm" to submit.
You will see a confirmation number on screen immediately. Save or print this number for your records. The payment will post to your account the same business day if submitted before 5 p.m. Eastern; otherwise it posts the next business day.
Setting up automatic monthly payments
Automatic payments mean your bill is paid on the same date each month without you having to log in or call. Log into wgasonline.com, go to "Pay My Bill," and look for an option to "Set Up Autopay" or "Automatic Payment." Choose whether you want to pay the full bill amount each month or a fixed dollar amount you set.
Select your payment method (bank account or card) and the date you want the payment to come out each month — most people choose the due date or a few days before. Confirm the setup. You can change or cancel automatic payments anytime by logging back in and adjusting your settings.
Automatic payments reduce the risk of missing a due date, but you should still check your bill each month to make sure the amount charged is correct. If you dispute a charge or notice an error, contact Washington Gas customer service at 703-750-1000 before the payment posts.
Paying by phone without logging in
Call 844-WGas-PAY (844-934-2729) and follow the automated prompts. You will need your account number (on your bill) and the amount you want to pay. The system will ask for your payment method: bank account or debit/credit card. Bank account payments are free; card payments may have a fee.
The automated system will confirm your payment and give you a confirmation number. Write it down. Payments submitted before 5 p.m. Eastern on business days post the same day. If you need to speak to a person instead of using the automated system, stay on the line after the prompts end and a representative will help you.
Using the Washington Gas mobile app
Download the Washington Gas app from the Apple App Store or Google Play Store. Open the app, log in with your account number and password (or create an account if you do not have one), and tap "Pay My Bill." Enter the amount, choose your payment method and date, and confirm.
The app shows the same information as the website: your current balance, due date, payment history, and usage. You can also set up automatic payments through the app. Payments submitted before 5 p.m. Eastern on business days post the same day.
What to do if you pay by mail
If you prefer to mail a check, write your account number on the check and mail it to the address shown on your bill. Allow at least 10 business days for the check to arrive and post. Washington Gas will not consider your payment on time unless it is received and processed by the due date, so mailing close to the deadline risks a late fee.
If you mail a payment and want to confirm it has been received, log into your online account a few days after mailing and check your payment history. You can also call customer service at 703-750-1000 to ask whether a specific check has posted.
Late fees and what happens if you miss the due date
Washington Gas charges a late fee if your payment is not received and posted by the due date shown on your bill. The fee amount varies but is typically a percentage of your balance. Even if you submit a payment online before the due date, it may not post in time if you submit it after the cutoff hour (usually 5 p.m. Eastern) or on a weekend or holiday.
If you miss a due date, pay as soon as you can. The late fee will appear on your next bill. If you have trouble paying your bill, contact Washington Gas at 703-750-1000 to ask about payment plans or hardship programs that may be available to you.
Frequently Asked Questions
Is there a fee to pay my bill online?
No fee if you pay by bank account transfer (ACH). Credit and debit card payments may have a small fee, usually 1 to 3 percent of the amount paid, depending on your card type. The website will show you the fee before you confirm the payment.
How long does it take for an online payment to show up on my account?
Payments submitted before 5 p.m. Eastern on a business day post the same day. Payments submitted after 5 p.m. or on weekends and holidays post the next business day. You can check your payment history in your online account to confirm it has posted.
Can I schedule a payment for a future date?
Yes. When you make a payment online or by phone, you can choose the date you want the payment to come out. This is useful if you want to pay on payday or a few days before the due date. The payment will not post until that date.
What if I set up automatic payments but want to skip a month?
Log into your online account and pause or cancel the automatic payment for that month. You can then resume it the following month, or make a one-time manual payment instead. Contact customer service at 703-750-1000 if you need help adjusting your autopay.
Can I pay someone else's Washington Gas bill online?
You can pay online only if you have access to that account — meaning you know the account number and password or are listed as an authorized user. If you want to pay a family member's bill but do not have account access, ask them to add you as an authorized user, or call customer service at 703-750-1000 to discuss payment options.