Esker Review 2026: AP and AR Automation for Mid-Market
Honest Esker review: unified AP and AR automation, mid-market pricing, ERP integrations, and how it compares to HighRadius and Billtrust for order-to-cash.
Last updated: 2026-05-26
Quick verdict
Esker is the best mid-market option for companies needing both AP and AR automation on a single platform. The unified AP+AR approach reduces reconciliation overhead and gives finance teams one ERP integration to manage. It is less powerful than HighRadius for pure enterprise cash application, but meaningfully cheaper and faster to implement.
What Esker does
Esker is a cloud-based document process automation platform covering both the purchase-to-pay (AP) side and the order-to-cash (AR) side of the ledger. On the AP side: purchase order management, invoice capture via OCR, automated coding, multi-level approval workflows, and payment execution. On the AR side: invoice delivery, customer payment portals, collections workflow automation, and cash application.
The unified platform is the primary differentiation from point solutions: AP invoice data and AR payment data are both in Esker, enabling cross-ledger visibility that reduces end-of-month close work. Finance teams using both modules report spending significantly less time on reconciliation.
Esker integrates with SAP, Oracle, NetSuite, Microsoft Dynamics, Sage, and most major ERPs. The integrations are mature — Esker has been deploying ERP connectors for over 20 years.
AP automation module
Esker's AP module handles the full invoice processing cycle: invoices arrive via email, PDF, EDI, or supplier portal, OCR captures and validates the data, the system applies GL coding based on rules and POs, and approvals route to the right people before payment.
Three-way matching (PO + receipt + invoice) is supported natively with configurable tolerance levels. Exceptions — invoices where the PO price doesn't match, or items not yet received — are flagged and routed automatically rather than sitting in an email queue.
The OCR accuracy is reliable for structured invoices. For non-standard invoices, manual intervention is required more frequently than with Stampli's AI-assisted coding. If AI coding assistance is the primary requirement, Stampli is the stronger choice for AP-only use cases.
AR automation and cash application
Esker's AR module covers invoice delivery, collections automation (dunning sequences, escalation management), and cash application — matching incoming payments to open invoices using AI-powered remittance processing.
The cash application module reads remittance data from email attachments, bank EDI files, and lockbox images, then auto-matches payments to invoices. For mid-market companies processing 200–2,000 payments per month, this is the primary time-saving ROI.
G2 score: 4.5/5 (28 reviews as of 2025 — small sample; treat as directional). Most cited strength: the AP+AR combination reducing reconciliation. Most cited weakness: implementation complexity when deploying both modules simultaneously. For competitive context, see HighRadius alternatives and cash application software.
Pricing and who should use Esker
Esker does not publish pricing publicly. Mid-market companies typically pay $2,000–$8,000/month depending on modules, volume, and ERP integration complexity. Implementation is 3–6 months for standard configurations.
Esker is right for mid-market companies (100–2,000 employees) needing both AP and AR automated on one platform, with a major ERP, who want a faster and cheaper path than HighRadius or full Billtrust implementations.
Not the right choice for: small businesses (Gaviti or BILL are better value); AP-only needs (Stampli or BILL are more focused); enterprises with $500M+ receivables needing HighRadius-level sophistication. Full competitive overview: invoice-to-cash software.