Best Collections Software for Security and Alarm Companies (2026)

Disclosure: Abivo is our product. Facts about other tools come from their own websites as of October 2026.

The short answer: If your team spends the week chasing past-due commercial, multi-site and installation invoices, Abivo takes that follow-up off their plate: its AI agent Kate calls, texts and emails customers about overdue invoices and hands cancellations and disputes to your team. If you want RMR billing with a done-for-you past-due service, look at Cornerstone Billing Solutions. Smaller dealers that want recurring billing and accounting in one tool can compare AlarmBiller and WorkHorse; larger integrators should look at SedonaOffice. For lighter reminder automation on Xero or QuickBooks, Paidnice and Chaser are worth a look.

Security and alarm A/R mixes two worlds. Recurring monitoring revenue bills like clockwork, while installation, service and commercial multi-site invoices are larger, slower and often stuck on a PO, a site contact who left, or a cancellation that is still being argued. Once several people spend the week on follow-up, the cost is real.

This guide compares eight options. We left out pricing, because it changes often and most vendors quote by volume.

Comparison table

1. Abivo

Best for: Security, alarm and fire alarm companies whose team spends the week on routine follow-up, especially commercial and multi-site accounts and AR teams with three or more people in collections.

What it does: Abivo's AI agent, Kate, follows up on overdue invoices by phone, text and email, in your company's brand. Reminders name the site, contract and PO, and one message can cover every open invoice on an account. Kate records promises to pay, disputes and next steps. When a customer raises a cancellation, a billing dispute, or asks for a person, Kate hands the account to your team.

Controls that matter for alarm companies: set the follow-up cadence per account or segment so residential and commercial accounts get different treatment, pause follow-up on one invoice while a dispute is open, and flag key accounts so replies go to the named owner.

Proof: OFS Group, a fire protection company, went from four collectors on the phones to one while recovering $842,518 in four months and cutting DSO by more than 30 days. Read the OFS Group case study.

Integration notes: Abivo connects to QuickBooks, Xero, NetSuite, Sage Intacct, Microsoft Dynamics 365, SAP, Chargebee and CSV. Your alarm billing system keeps billing the RMR; Abivo follows up once the invoice is in your accounting system. See collections software for security and alarm companies.

2. Cornerstone Billing Solutions

Best for: Alarm dealers who want RMR billing software plus a done-for-you past-due collections service.

What it does: Cornerstone offers RMR billing for alarm dealers and Billing Plus, a managed past-due service that runs a timeline from early reminders to a final demand notice, using texts, emails and automated calls with payment links, plus collection letters. It lists integrations with central stations and Alarm.com.

3. AlarmBiller (Bold Group)

Best for: Smaller security dealers that want recurring billing and accounting in one tool.

What it does: AlarmBiller is cloud billing and business management software covering recurring billing, accounting, payments, work orders and inventory, with a customer portal and autopay.

4. SedonaOffice (Bold Group)

Best for: Larger security integrators that want industry-specific accounting.

What it does: SedonaOffice is enterprise financial management for security companies, with AP, AR, general ledger, job management, inventory and service, and lockbox payment posting.

5. WorkHorse

Best for: Alarm and monitoring companies that want billing and operations in one platform on QuickBooks Online.

What it does: WorkHorse covers leads, sales, RMR billing, dispatch and customer service, lets you email and text customers from inside the app, and offers a customer portal.

6. Paidnice

Best for: Small and mid-sized dealers on Xero or QuickBooks Online that want rule-based reminders and late fees.

What it does: Paidnice automates reminders by email, SMS and scheduled calls, applies late fees, sends statements, offers payment plans and a branded payment portal, and reads customer replies to log promises to pay.

7. Versapay

Best for: Mid-market finance teams on NetSuite, Sage Intacct or Dynamics.

What it does: Versapay covers invoicing, collections, cash application and reporting, with dunning email templates, call logging and a customer self-service portal. See our Versapay alternative page.

8. Chaser

Best for: Small and mid-sized finance teams that want multichannel reminders.

What it does: Chaser chases payments by email, SMS, automated calls and letters, with a payment portal and cash flow forecasting, and lists many accounting integrations. See our Chaser alternative page.

How to choose for a security or alarm company

• Split RMR from project invoices. Monitoring revenue often runs on autopay. Installation, service and commercial invoices are where balances age.

• Decide who does the follow-up. A managed service, your own team, or an AI agent working in your name.

• Handle cancellations carefully. Pick a tool that can pause one invoice and route the account to a person.

• Use phone and text. Commercial site contacts change often; email alone gets lost.

• Measure. Track DSO, percent over 60 days, and hours spent on follow-up.

Frequently asked questions

What is the best collections software for a security company?

For routine follow-up on commercial and multi-site invoices by phone, text and email, Abivo. For RMR billing with a managed past-due service, Cornerstone. For billing and accounting in one system, AlarmBiller or SedonaOffice.

Does Abivo replace my alarm billing software?

No. Your billing system keeps billing the RMR. Abivo follows up on the invoices that go past due once they are in your accounting system.

Does this work for fire alarm monitoring invoices?

Yes. Kate follows up on monitoring, inspection and service invoices for fire alarm and security accounts.

Want to see how Kate would follow up on your open accounts? Book a demo.