C3 vs CommunityPay

C3 is ATG’s proprietary enterprise management software for tracking community operations. It is presented for community management companies and self-managed associations, with Android and web access and mobile apps. Financial functions include financial management, accounts receivable and payable, budgeting, reporting, and delinquency processing. Operational tools cover association management, work orders, maintenance, architectural management, and covenant tracking. The system supports online dues collection, maintenance requests, and association accounting. ATG describes a cloud offering intended to scale with a company and provide data access 24/7. TownSq integrates with ATG for resident engagement, payments, amenity reservations, maintenance requests, association documents, and task updates. Other integrations cover invoice processing, mailing, check printing, and banking automation. ATG offers standard or custom implementation, account reconciliation, web-based training, optional onsite training, and phone and email support. Pricing is paid and available on request.

CommunityPay provides payment and accounting infrastructure for community associations, with tools to record transactions and decisions. Its accounting features include double-entry bookkeeping, fund tracking, period locks, financial statements, and board-ready reports. Residents can pay online by ACH or card; vendor payments use Stripe Connect, support batch processing, and create journal entries automatically. Payment controls route journal entries through an enforcement dispatcher that evaluates guards and records decisions. The API can request resale certificates generated from live ledger data and deliver them through HMAC-signed callbacks. Its Legal Corpus API covers statutes, thresholds, and compliance profiles across 50 states plus D.C. QuickBooks and Xero sync are listed as included features. A token-gated CPA portal offers read-only access to scope-restricted sections and logs events. CommunityPay charges $1 per unit per month, with a $100 community minimum and $500 cap; processing fees pass through at cost. The public API is free, while Professional API costs $99 per month.