Top 10 Best Invoice And Purchase Order Software of 2026

QuickBooks Online is a premier cloud-based accounting software renowned for its robust invoicing and purchase order capabilities, enabling businesses to create, send, and track professional invoices with automation and payment integrations. It streamlines purchase order management by allowing easy creation, vendor tracking, approval workflows, and seamless conversion to bills or expenses. With real-time reporting and mobile access, it ensures efficient financial control for growing businesses. As the industry leader, it integrates invoicing and POs with full accounting features like inventory and payroll.

Xero is a cloud-based accounting software renowned for its robust invoicing and purchase order capabilities, enabling users to create professional invoices, track payments, and manage recurring billing seamlessly. It supports purchase orders with approval workflows, conversion to bills, and integration with inventory tracking. The platform automates bank reconciliations and multi-currency transactions, making it a comprehensive solution for streamlining AP/AR processes in small to medium-sized businesses.

Zoho Books is a cloud-based accounting platform designed for small to medium-sized businesses, offering robust tools for creating, sending, and tracking invoices with automation, recurring billing, and multi-currency support. It streamlines purchase order management by allowing users to generate POs, set up multi-level approvals, convert them to bills, and track vendor payments efficiently. Integrated with the broader Zoho suite, it provides seamless financial oversight, reporting, and inventory tracking tied to invoicing and procurement processes.

Odoo is an open-source ERP platform with powerful modules for invoicing and purchase order management, enabling users to create, track, and automate customer invoices, recurring billing, and payments. For purchases, it handles RFQs, purchase orders, vendor bills, and three-way matching with receipts and inventory. The software excels in integrating these processes with accounting, CRM, and inventory for streamlined operations across small to large businesses.

Oracle NetSuite is a cloud-based ERP platform with robust invoicing and purchase order modules that automate accounts payable/receivable processes, vendor management, and procurement workflows. It provides real-time visibility into cash flow, customizable approval hierarchies, and seamless integration with inventory, CRM, and financials for end-to-end efficiency. Designed for scalability, it supports multi-currency, multi-subsidiary operations ideal for growing businesses handling complex transactions.

Sage Intacct is a cloud-based financial management platform renowned for its robust accounts payable (AP) and accounts receivable (AR) modules, enabling automated invoice processing, approval workflows, and purchase order management. It supports multi-entity, multi-currency operations with dimensional accounting for granular tracking of expenses and revenues. Designed for mid-market businesses, it integrates seamlessly with ERP systems and provides real-time reporting for better financial control.

Bill.com is a comprehensive cloud-based platform designed to automate accounts payable (AP) and accounts receivable (AR) processes for businesses. It enables users to create, send, and track invoices, manage purchase orders through customizable approval workflows, and handle payments via ACH, checks, wires, or virtual cards. The software integrates seamlessly with major accounting systems like QuickBooks and Xero, providing real-time visibility into financials and reducing manual data entry.

Procurify is a cloud-based procure-to-pay platform designed to streamline purchasing, approvals, and invoice management for businesses. It enables users to create requisitions, generate purchase orders, match invoices to POs, and track spending in real-time. With strong integration capabilities for accounting systems like NetSuite and QuickBooks, it helps organizations enforce budgets and reduce manual processes.

FreshBooks is a cloud-based invoicing and accounting software tailored for small businesses, freelancers, and service providers, offering customizable invoices, online payments, and expense tracking. It includes basic purchase order functionality for creating, sending, and converting POs to bills, integrated with its expense management. While strong in invoicing automation and client collaboration, its PO features are simpler and lack advanced procurement tools like vendor management or inventory integration.

Wave is a free cloud-based accounting software that provides comprehensive invoicing tools for creating, sending, and tracking professional invoices with customizable templates and recurring options. It also supports basic purchase order creation, allowing users to generate POs, convert them to bills, and manage vendor payments efficiently. Ideal for small businesses, Wave combines these features with integrated accounting and receipt scanning for streamlined financial management.