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Corporate finance · Topo Contábil

Accounting close cut from 12 to 5 business days

How we built a corporate accounting reconciliation platform from zero to production — multi-tenant, LGPD-native, and integrated with client ERPs.

Context

Corporate controllership still lives in Excel

The reality of most controllership teams in Brazil is well known: dozens of spreadsheets circulating over email, analysts pasting bank statement balances into pivot tables, and formulas that break on the first touch. Reconciling hundreds of accounts by hand is the bottleneck that pushes the close past the 10th of every month.

Every human error becomes material risk. External auditors demand traceability, the finance committee wants the numbers closed before the board, and the controllership team ends up in overtime month after month. The monthly close turns into a stressful event instead of a predictable process.

Topo Contábil came with a clear brief: build a modern corporate accounting reconciliation platform that could be offered as a service to large enterprise groups, with guaranteed end-to-end traceability and direct integration with client ERPs.

Challenge

What had to be solved

  • Complete isolation between tenants (each enterprise client only sees its own data)
  • LGPD compliance by design — consent, audit trail, and right to be forgotten
  • Two-way integration with the ERPs clients already use, without relying on manual exports
  • Granular RBAC for controllership, analysts, internal audit, and approvers
  • Immutable audit trail — who did what, when, on which entry, and with what justification

Approach

How the team tackled it

  • Deep discovery with the controllership to map the real close flow and its bottlenecks
  • Multi-tenant architecture on Postgres with native row-level security
  • Ingestion via CSV, API, and custom connectors per ERP
  • Automated reconciliation rules engine with an exceptions queue
  • Multi-level approval workflows and a real-time executive dashboard

Result

Headline metric
12 → 5 business days

More than 50% reduction in monthly accounting close time.

  • 200+ accounts reconciled per month with automated rules
  • 100% traceability from any entry back to the source file
  • Dramatic reduction in rework — analysts focus on exceptions, not copy/paste
  • Predictable close within the contractual window, no overtime

Stack

Technologies in production

TypeScriptNext.jsPostgreSQL + Row-Level SecurityPrismaAWS (ECS, S3, Cognito)API integration with enterprise ERPs
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