Credit on Your Natural Gas Bill

For Arizona customers,

As a result of federal tax reform, our customers will receive credits on their natural gas bill beginning August 2018.
The Tax Cuts and Jobs Act of 2017 reduced the federal income tax rate for corporations like Southwest Gas, and we’re passing the savings on to you. The Arizona Corporation Commission authorized us to return $20 million in tax reform benefits to customers through a combination of a one-time credit for the tax savings from January through July 2018 and then a monthly credit of $0.03170 per therm until rates from the Company's next general rate case are effective. That means that the average residential customer will see a monthly credit of approximately $0.82 starting in August. This amount is based on the average consumption per month of 26 therms. Customers will see the one-time credit on their bills beginning in the middle of August.
If you have any questions regarding this notice, please contact us at 877-860-6020 .
Below is a list by rate schedule of the estimated monthly and one-time credits.
Rate Schedule Monthly Tax Credit One-Time Credit
G-5 Single Family Residential Gas Service $0.82 $5.77
G-6 Multi-Family Residential Gas Service $0.48
G-10 Low Income Single Family Residential Gas Service $0.79 $5.55
G-11 Low Income Multi-Family Residential Gas Service $0.57 $3.99
G-15 Special Residential Gas Service for A/C $2.05 $14.42
G-20 Master-Metered Mobile Home Park Gas Service $36.93 $258.51
G-25 General Gas Service - Small $0.70 $4.88
G-25 General Gas Service - Medium $7.93 $55.48
G-25 General Gas Service - Large 1 $42.86 $300.01
G-25 General Gas Service - Large 2 $228.59 $1,600.12
G-25 General Gas Service - Transportation Eligible $966.87 $6,768.17
G-40 Air Conditioning Gas Service $29.14 $203.93
G-45 Street Lighting Gas Service (Unmetered) $4.00 $27.96
G-55 Gas Service for Compression on Customer's Premises    
$13.06 $91.42
$244.69 $1,712.85
$1.90 $13.31
G-60 Electric Generation Gas Service $54.55 $381.89
G-75 Small Essential Agricultural Users Gas Service $111.36 $779.53
G-80 Natural Gas Engine Gas Service $76.33 $534.34

Learn How Gas Rates Are Set

The rates used by Southwest Gas are set by state regulatory commissions using a process called the "rate case cycle." Because of individual state regulations, the rate case cycle differs slightly for each state. See how rates are set for your state.

Request Rates & Tariff Information

Use this form to request historical Rates and Tariff information not available on this website.  This form may also be used as a request to be placed on Southwest Gas' California Advice Letter Service List.  If you have any questions regarding your bill, please contact Customer Assistance at    

Commission Websites

Check your state's Commission Office for more information about rates and regulations.