FP&A Engine — Wiki

A REST API for corporate budget management, actuals ingestion, and variance reporting. Built to replace the manual Excel workflows that FP&A teams run every month.

What Is This?

Every month, finance teams export actuals from their ERP, paste them into spreadsheets, and manually calculate budget vs. actual variances by department and GL account. It's slow, error-prone, and breaks the moment someone touches the wrong cell.

The FP&A Engine moves that logic into a versioned, auditable API. Budget data lives in a structured schema. Actuals are ingested on demand. Variance reports — with favourability flags, percentage deltas, and absolute figures — are available instantly for any department, fiscal period, or budget version.

Quick Start

git clone https://git.samantha42.xyz/samantha/FPandA-Engine
cd FPandA-Engine
cp .env.example .env
go mod tidy
go run ./main.go
# API on http://localhost:8080
# fpa.db created automatically on first run

Tech Stack

Layer	Choice
Language	Go
Routing	`net/http` stdlib (Go 1.22+)
Database	SQLite via `modernc.org/sqlite`
Schema	Auto-migrated on startup

FP&A Engine — Wiki

Pages

What Is This?

Quick Start

Tech Stack