LedgerVault AI: Privacy-First Expense & Tax Auditor for Freelancers
This is a submission for the Hacktoberfest Open-Source AI Challenge Week 2: Side Hustle What I Built Freelance developers, independent consultants, and solopreneurs bill $75–$150/hour , yet spend 4 to 8 hours every month sorting receipts, calculating tax write-offs, and matching expenses to client projects. More importantly, freelancers routinely sign strict Non-Disclosure Agreements (NDAs) .…
LedgerVault AI is a privacy-focused, local expense and tax auditing tool designed for freelancers and independent professionals. It aims to alleviate the time-consuming task of sorting receipts, calculating tax deductions, and matching expenses to client projects. The primary issue for freelancers is the substantial amount of time (4-8 hours monthly) spent on manual bookkeeping, which often involves uploading receipts containing confidential client information to proprietary cloud services.
This exposes them to privacy risks and compliance issues, along with recurring subscription fees for cloud bookkeeping platforms.
LedgerVault AI offers a solution by running entirely within the user's browser or through a local inference bridge. It requires no remote CDNs, telemetry, or data leakage, ensuring complete privacy and data security. The application extracts line-item and merchant information from expense records and receipts, categorizes transactions into the correct tax lines, and generates reports for various tax purposes.
It also enforces rules such as the statutory 50% business meal deduction cap under IRC § 274(n) and identifies potential audit risks like weekend dining or missing receipts.
The software is built on a dual-tier local processing architecture. Firstly, it offers a connection bridge to a local Ollama daemon, allowing for open-source AI processing using optimized models like Llama 3.2 3B and Mistral 7B. The structured JSON schema output ensures reliable extraction of relevant data points. Secondly, if Ollama is not available or on low-resource machines, the tool falls back to a client-side statutory tax engine that encodes IRS Schedule C rules directly into JavaScript. This allows for instant categorization of common freelance expenses and compliance flagging.
As a result, freelancers can reclaim hours of their time by automating the expense auditing process, eliminating the need for recurring cloud SaaS subscriptions. With a one-time lifetime license of $29 or a $7/month utility subscription, the tool proves to be cost-effective for freelancers who bill $75–$150/hour. The live demo can be accessed at https://farrosilman.github.io/LedgerVault/.
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