Overview
This guide covers two ways to process a one-time payment through the AlarmPayments.com portal: directly from a customer's account in Cornerstone (for staff processing payments on behalf of a customer), or by visiting the website directly (for customers paying their own bill, or for staff working outside of Cornerstone).
Method 1: Processing a Payment from Cornerstone
Use these steps when you are processing a payment on behalf of a customer.
Step 1 — Find the Account
- Open the customer list: Click the Customer Icon from the main screen.
- Locate the customer: Search for and select the correct customer account to open their profile.

Step 2 — Launch the Payment Portal
- Open the portal: Click the Alarm Pay Button within the customer's account. This will securely launch the AlarmPayments.com portal.
(Your payment portal will show your company branding)
- Begin payment: Once the portal loads, click the Make Payment button.
Step 3 — Complete the Payment
- Review invoices: Review the list of open invoices. Uncheck any invoices that should not be included in this payment.

- Select a payment method: Scroll down and choose the applicable payment method (e.g., Credit Card, eCheck/ACH).

- Enter payment details: Add the required payment information into the fields provided.
- Continue: Click Continue.

- Review and agree: Review the payment details for accuracy, then check the box to agree to the Online Payment Agreement.

- Confirm: Click Confirm Payment.

- Submit: Click Submit to process the transaction.

⚠️ IMPORTANT
If paying by credit card, you will see an immediate Approval or Denial message on the screen after you click Submit.
Method 2: Paying Directly on the Website
Use these steps when guiding a customer to pay their own bill, or if you are paying outside of Cornerstone.
Step 1 — Access the Portal
- Navigate to the portal: Open a web browser and go to Alarmpayments.com.

- Enter credentials: Enter the Customer Number and the billing Site Zip Code.
- Proceed: Click Next.
Step 2 — Follow the Payment Steps
Once logged in, the process follows the same flow as Method 1. The customer will need to:
- Begin payment: Click Make Payment.
- Review invoices: Review open invoices and uncheck any they do not wish to pay.
- Select payment method: Select a payment method and enter their payment information.
- Continue and confirm: Click Continue, agree to the terms, and click Confirm Payment to finalize the transaction.
Need Additional Help?
Our Customer Success team is here to assist you.
Phone: 847-405-9517 x1
Email: customer.success@alarmbills.com
Copyright © 1999–2026 Cornerstone Billing Solutions. All rights reserved.
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