Schedule a call

Financial Systems · Industry Knowledge Challenge

Ledgers, Balances & Reconciliation

12 questions 4 knowledge levels ~4 min No registration

Twelve questions on the machinery underneath every balance — how entries are posted, how mistakes are corrected without destroying history, and why two correct records still disagree.

See how SG Systems builds these systems

FinTech & Transactions expertise

Balance and ledger systems, reconciliation and settlement platforms.

Open →

Financial Management case study

Consolidated reporting and debt tracking across operating subsidiaries.

Open →

PopularityExchange case study

Real-time balances and portfolio state in a trading platform.

Open →

About this challenge

This challenge is about financial state that has to survive scrutiny: what a ledger guarantees, how corrections are made in an append-only world, and what it takes to match a bank statement to the invoices behind it. It is written for finance, product and engineering people who build or operate transactional systems.

12 questions · four knowledge bands (Essential, Professional, Advanced, Expert) · a nonlinear Knowledge Score · no registration, no email required.

  • Double-entry, posting and balances
  • Reversals and auditable correction
  • Sub-ledgers and control accounts
  • Compensating transactions and event sourcing
  • Period cut-off
  • Matching receipts to invoices