CPA-Managed Accounting, Business Systems & AI
Most companies get little forward-looking insight from their bookkeeping. It's a regulatory exercise run on disconnected systems — a cost center that tells you where you've been, never where you're headed.
What if your books, and the systems and AI agents behind them, could be your oracle?
The Problem
For most companies, bookkeeping is purely a regulatory exercise. The books get closed, the taxes get filed, and nobody looks at the data again. No forecasts. No trend analysis. No early warnings. There are reasons this keeps happening:
Miscategorized transactions, stale receivables, reconciliation gaps — when the data going in is wrong, every report coming out is unreliable.
If it takes weeks to close the books, you're making decisions with month-old information. Speed matters — stale financials are as useful as no financials.
Spreadsheets, legacy tools and systems that don't talk to each other weren't built for analytics. Without the right stack, turning financial data into forward-looking insight is nearly impossible.
Great analytics needs people who understand accounting, systems and your business. Most companies can't justify a full-time team with that mix of expertise.
What We Deliver
We maintain your books with CPA-level precision, on systems and AI agents we set up and run — then build an analytical engine on top that turns your financial data into foresight.
Clean, accurate books maintained by CPAs — not just clerks. AI-assisted entry and reconciliation do the legwork, a CPA reviews the result, and every transaction is categorized with analytics in mind.
Trend analysis, cash flow projections, and scenario modeling drawn directly from your live financials. See what's coming — not just what happened.
Proactive tax strategy for real estate, ecommerce, and high-net-worth individuals. We minimize liability and surface opportunities before deadlines hit.
Automated checks watch your financials for anomalies and risks — margin erosion, cash crunches, expense drift, duplicate payments — so problems get flagged before they become crises.
Business Systems & Automation
Clean books depend on the systems underneath them. We migrate, configure and operate the ERP, data and automation layer, with the same CPA discipline we bring to the ledger.
Moves from one platform to another, such as off QuickBooks Online or NetSuite. We extract, map and load the data, then tie every count and balance back to the source system and rehearse the cutover before anyone switches over.
Day-to-day operation of the ERP you already run, from QuickBooks to Microsoft Dynamics 365 Business Central: landed cost, inventory costing and posting controls, plus custom extensions taken through a test environment to production under change control.
AI agents read the AP inbox, check for duplicates, code invoices from precedent and prepare drafts with the source documents attached. Our team reviews and posts. Bank reconciliations and data checks run the same way.
Read-only reporting warehouses fed from your ERP, bank and sales-channel data. Every report ties its control totals back to the ledger and is held back if a check fails.
Drafts, not postings
Agents prepare entries. A person approves before anything posts or pays.
Every change checked
Writes are previewed, read back from the system afterward and logged.
Recovery rehearsed
Backups are taken and restores are tested before changes go in.
AI & Agent Systems
We build and run AI agents for finance and operations teams. You can run the models on your own hardware, check where each one came from, and review an agent's work before it counts. Every step leaves a record you can check.
We run open-weight language models on servers you own, with or without a GPU, so your data never goes to an outside AI service. We test the candidate models on your actual work before choosing one, and we choose on accuracy, not just speed.
We check where a model's weights came from using its model card, training-data cards and technical papers, not just the publisher's name. Each model's source, licence and SHA-256 hash goes into a bill of materials, and every download is verified against its published hash.
Agents work in your ERP and operations systems through their APIs and the Model Context Protocol (MCP). Credentials stay in a vault the agent never reads. Agents prepare drafts, and a person approves before anything posts, pays or is sent.
Quantities, dates, thresholds and totals are worked out in code, where they can be tested. The model explains the result and writes the draft. An automatic check rejects any draft that contains a number not found in the source data.
Our own platform
Our co-founder designs and builds the agent platform L3 runs on: scheduled agents, approvals, a credential vault and plugins.
Our own books first
Our own ledger runs on a self-hosted ERP, operated with agents. We prove a setup on our own practice before we recommend it.
Dedicated deployments
Each client deployment gets its own dedicated, isolated instance behind single sign-on.
How It Works
We don't just maintain your books — we fix the systems they run on and turn them into a decision-making tool. Here's how.
We take over your books and the systems behind them — proper categorization, reconciliation, a chart of accounts designed for insight, and an ERP that fits how you operate.
With clean data flowing, we layer on AI agents, automation and analytics: AI-assisted entry and checks, dashboards, trend monitoring, forecasts, and alerts. Your financials start telling you what's coming, not just what happened.
Now you make decisions with confidence. Cash flow projections, scenario models, and early warnings become part of how you run your business — not an afterthought.
Case Studies
Three engagements from our own records. Clients are anonymized.
ERP migration
A small professional-services firm outgrowing QuickBooks Online.
ERP migration
A high-volume ecommerce seller with several related entities, moving to a lower-cost ERP.
ERP operations
A consumer-products brand selling direct and wholesale on Microsoft Dynamics 365 Business Central.
Case studies describe actual L3 LLP engagements with identifying details removed. Results depend on each business, and past results do not guarantee future outcomes.
L3 LLP is a CPA-managed accounting, business systems and AI systems firm. We keep your books, run the systems and agents they live in, and build the analytical engine on top — helping you inform business decisions and catch problems before they become major.
24+
Years combined CPA experience
2023
Founded
SMB
Focus on scaling companies
SoCal
Based in Southern California
Our Team
L3 LLP was founded by two CPAs who believe growing businesses deserve more than cookie-cutter accounting — clean books, systems and AI that fit, and numbers they can act on.
Co-Founder
Joy brings a thoughtful, patient approach to complex tax challenges. With deep expertise in real estate taxation and ecommerce business accounting, she helps clients navigate compliance with a strategic mindset — turning tax obligations into opportunities.
Co-Founder
Alvin is passionate and energetic about helping businesses grow. His background in operational efficiency and business strategy makes him the ideal partner for entrepreneurs who are ready to scale — he sees the big picture and builds the systems to get there, from ERP migrations to the agent platform the firm runs on, which he designs and builds.
Let's talk about what your financial data could be telling you — and build the systems to make it happen.