Capstone project · about 90 minutes
Double-Entry Accounting Ledger 📒
Build the bookkeeping engine behind every accounting package: journals that must balance, a trial balance that proves it, and a profit and loss.
Double-entry has survived 500 years because it self-checks: every entry moves the same amount out of one place and into another, so the books balance or the entry is wrong. That single invariant is what you are enforcing. Clients trust this project because it is auditable: the trial balance either adds up or it does…
This is a Pro project. Six portfolio projects are free, so you can see how they work before deciding.