How to pay your SRP bill
Salt River Project (SRP) offers five main ways to pay your bill: online through their website, by phone, by mail, in person at a payment center, or through automatic bank withdrawal. The fastest and most convenient option for most people is online payment through the SRP website or mobile app, which processes immediately and costs nothing. If you prefer not to use the internet, you can call SRP's automated phone line, mail a check, or visit a local payment center — all of these methods work, but they take longer and may have different deadlines depending on when your bill is due.
Your bill is due by the date printed on your statement. If you pay after that date, SRP will charge a late fee. The amount varies, but it is typically a percentage of your bill or a flat fee — check your statement or SRP's website for the exact amount in your service area. If you are struggling to pay on time, SRP offers budget billing and other programs that may help; those are separate from the payment method itself.
Key Takeaways
- Online payment through the SRP website or app is free, immediate, and the fastest way to avoid late fees.
- Phone payment, mail, and in-person payment all work but take longer — plan ahead if your due date is soon.
- Late fees apply if you pay after the due date printed on your bill, so set a reminder for a few days before.
- Automatic bank withdrawal (autopay) removes the risk of forgetting to pay and is free to set up.
- If you cannot pay the full amount by the due date, contact SRP before the deadline to discuss payment plans or assistance programs.
Paying online through the SRP website or app
Go to srpnet.com and log into your account, or download the SRP mobile app on your phone. Click the "Pay My Bill" or "Make a Payment" button. Enter the amount you want to pay (you can pay the full balance or a partial amount), choose your payment method (debit card, credit card, or bank account), and confirm. The payment posts to your account immediately, though it may take one to two business days to appear on your statement.
Online payment is free — SRP does not charge a convenience fee. You do not need to create an account in advance, though having one makes it easier to see your balance and payment history. If you do not have an SRP online account yet, you can create one using your account number (found on your bill) and your service address.
Paying by phone
Call SRP's automated payment line at 1-602-371-6000. You will need your account number and a debit card, credit card, or bank account information. Follow the prompts to enter your payment amount and confirm. The system will give you a confirmation number — write it down or take a screenshot. Phone payments are free and process immediately, though the transaction may not show on your online account for a day or two.
If you prefer to speak with a person, you can call SRP's customer service line during business hours, but this may take longer than the automated system. The automated line is available 24 hours a day, seven days a week.
Paying by mail
Write a check or money order payable to SRP. Include your account number on the check. Mail it to the address printed on your bill — this address is usually a lockbox, not SRP's main office. SRP recommends mailing your payment at least 10 days before the due date to account for mail delivery time.
Mail payment is the slowest method. If your check arrives after the due date, you will be charged a late fee even if you mailed it on time. For this reason, mail is best used only if you do not have internet access or a phone, or if you are paying well in advance of your due date.
Paying in person at an SRP payment center
SRP operates payment centers in the Phoenix area where you can pay in cash, check, or debit card. Bring your bill or account number. Payment centers are open during standard business hours, typically Monday through Friday. You can find the nearest location and hours on the SRP website under "Payment Centers" or by calling customer service.
In-person payment is useful if you prefer to pay in cash or if you want a receipt on the spot. However, it requires you to travel to a payment center during business hours, which is not convenient for everyone. Payment posts to your account the same day or the next business day.
Setting up automatic payments (autopay)
Automatic payment removes the risk of missing a due date. Log into your SRP online account, go to "Billing & Payments," and select "Autopay." Choose whether you want to pay the full bill amount or a set amount each month, and provide your bank account or card information. SRP will charge your account on the due date automatically each month.
Autopay is free to set up and cancel. You can change the payment amount or pause autopay at any time through your online account. If you want to stop autopay, do so at least a few days before the next scheduled payment to make sure it does not process.
What to do if you cannot pay by the due date
Contact SRP before your due date — do not wait until after. Call customer service at 1-602-371-6000 or log into your online account to see what options are available. SRP offers payment plans that spread your balance over several months, which can make the payment more manageable. You may also be able to defer part of your payment to the next billing cycle, depending on your account history and the reason for the hardship.
SRP also runs assistance programs for customers with low income or those facing hardship. These are separate from payment plans and may cover part or all of your bill. The programs and their requirements vary by location within SRP's service area, so ask about what is available when you call.
Frequently Asked Questions
Does SRP charge a fee to pay online or by phone?
No. Online and phone payments through SRP are free. If you use a third-party payment service or a bill-pay feature from your bank, that service may charge a fee, but SRP itself does not.
How long does it take for a payment to show up on my account?
Online and phone payments post immediately, though they may take one to two business days to appear on your statement. Mail and in-person payments typically post within one to two business days. Autopay posts on the due date you set.
What happens if I pay after the due date?
SRP will charge a late fee. The amount depends on your bill size and location within SRP's service area. You can find the exact late fee on your bill or by calling customer service. Late fees are separate from your bill amount and must be paid in addition to your regular charges.
Can I pay someone else's SRP bill?
Yes, if you have their account number. You can pay online, by phone, or by mail using the account number. You do not need to be the account holder. However, if you want to set up autopay or make changes to the account, you will need the account holder's permission and may need to be listed as an authorized user.
What if I overpay my bill?
If you pay more than you owe, SRP will credit the extra amount to your next bill. You can also request a refund by contacting customer service, though this may take several weeks to process. Most people leave the credit on their account to cover the next month's charges.