--- title: "You Don't Know What a Ledger is For" url: https://daily.dev/posts/you-don-t-know-what-a-ledger-is-for-zjdw8smrs source_url: https://news.alvaroduran.com/p/you-dont-know-what-a-ledger-is-for type: article source: "The PayEng Playbook" published: 2026-03-18T17:41:27.803Z updated: 2026-03-18T17:41:55.452Z tags: ["fintech"] reading_time: 7 upvotes: 0 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # You Don't Know What a Ledger is For **[The PayEng Playbook](https://daily.dev/sources/alvaroduran)** · 7 min read · 0 upvotes · 0 comments ## Summary A ledger is not just an accounting compliance tool — it's a system that builds financial intelligence within a company. Early-stage startups don't need ledgers; the only metric that matters is runway. Post product-market fit, however, tracking where money goes and why becomes critical as ROI conversations replace pure growth metrics. The post outlines five concrete indicators that signal it's time to move from spreadsheets to a ledger system: transaction volume approaching 1,000/month, 40+ hours to close quarterly books, 1%+ discrepancy rate, finance team spending 20% of time on reconciliation, and projected 50%+ transaction growth. The core tension in any ledger is between accounting's need for correctness and engineering's need for scale and throughput. When built correctly, a ledger shifts from answering 'where did money go?' to 'where should money go next?' ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [From Stock Markets To Ledgers Series, Part I](https://daily.dev/posts/from-stock-markets-to-ledgers-series-part-i-hmoijmz9l) · The PayEng Playbook · 5 upvotes · 0 comments --- Tags: [#fintech](https://daily.dev/tags/fintech) [View this post on daily.dev](https://daily.dev/posts/you-don-t-know-what-a-ledger-is-for-zjdw8smrs)