Top 30 Integrated Billing Software with Accounting and CRM Features

All‑in‑one suite that unifies Zoho Books (accounting), Zoho Invoice (billing) and Zoho CRM, offering seamless data flow and customizable automation.

User‑friendly invoicing and time‑tracking tool with built‑in expense management and a lightweight CRM for client communication.

Intuit’s flagship accounting platform paired with its native CRM module, delivering integrated billing, financial reporting, and lead management.

Xero’s cloud accounting paired with HubSpot’s free CRM via native integration, providing real‑time invoicing and customer insights.

Open‑source ERP that bundles invoicing, accounting, and CRM in a single database with extensive customization options.

Robust financial management system with built‑in billing automation and a CRM add‑on for enterprise‑level revenue operations.

Comprehensive cloud ERP that integrates billing, full‑stack accounting, and a native CRM to support high‑growth businesses.

Standalone accounting solution tightly coupled with Zoho CRM, enabling automatic invoice creation from deals.

Free accounting and invoicing platform that includes basic client management tools for freelancers and small firms.

Automated AP/AR solution with integrated invoicing and a lightweight CRM for tracking customer payment status.

Subscription billing platform with built‑in revenue recognition, accounting sync, and a CRM‑like customer portal.

Recurring billing and subscription management tool that syncs with major accounting systems and offers customer lifecycle insights.

Focused invoicing app that integrates directly with Zoho CRM and Zoho Books for end‑to‑end financial workflows.

CRM with built‑in project billing and accounting connectors, allowing invoices to be generated from opportunities.

Sales pipeline manager that offers an invoicing add‑on and integrates with Xero/QuickBooks for accounting sync.

All‑in‑one ERP with integrated financials, billing, and a CRM module for unified customer and revenue management.

SMB‑focused ERP delivering integrated invoicing, accounting, and CRM capabilities within a single platform.

Simple cloud accounting with built‑in invoicing and a basic CRM for tracking client interactions.

UK‑centric accounting software that includes invoicing, expense tracking, and a lightweight client management module.

Premium CRM suite that bundles Zoho Books, Zoho Invoice, and advanced automation for end‑to‑end revenue workflows.

HubSpot’s free CRM paired with the Billing Hub add‑on for quote‑to‑cash, syncing invoices directly with accounting tools.

Extension of Salesforce CRM that adds subscription billing, revenue recognition, and native integration with major ERPs.

Subscription management platform that integrates with Zoho Books and Zoho CRM for recurring billing and customer insights.

Cloud accounting with invoicing and a built‑in CRM module for small businesses seeking unified financial and sales data.

UK‑focused accounting suite offering invoicing, automated payment reminders, and a simple CRM for client tracking.

Low‑code platform where custom billing, accounting, and CRM apps can be built and linked in a single workspace.

Freshsales CRM tightly integrated with FreshBooks accounting, enabling one‑click invoice generation from deals.

Dedicated finance bundle within Zoho One that combines Zoho Books, Zoho Invoice, and Zoho CRM for a complete billing pipeline.

Square’s payment ecosystem includes invoicing, basic accounting reports, and a built‑in customer relationship view.

Stripe’s subscription billing paired with RevenueCat’s customer management for developers needing integrated payments and CRM.

PayPal’s invoicing tool integrates with its merchant account reporting and includes a simple client contact manager.

Zoho CRM’s advanced tier adds native accounting sync with Zoho Books, enabling real‑time invoice creation from opportunities.

Desktop‑based accounting with cloud‑enabled invoicing and a built‑in CRM for managing sales pipelines.