About Zeno

Built by accountants who know the work.

Zeno brings together financial answers for owners, practical tools for bookkeepers, and a review process for the people responsible for the books. Its design comes from doing the work and building the software to support it.

Why you can trust the books

Built by accountants who code.

The bookkeeping and the software that does it come from the same people. Nobody bolted the accounting on afterward.

Zeno ServicesAccountants who write their own software
Certified
Advanced Certified QuickBooks ProAdvisors, Online and Desktop, since 2009
Trained
Graduate accounting, focused on budgeting, controls and financial analysis
Practice
20 years of outsourced bookkeeping and custom financial software
Books kept
Nonprofits, landlords, builders, households

Founded by Eli Mandel

Most accounting software is written by engineers who learn the accounting later. Most software shops cannot keep a real set of books. Zeno is built by people who do both, so the review step, the client rules and the posting history are shaped by how the month actually gets closed.

For most of two decades our work has been one thing: take a workflow governed by financial data and strict accounting rules, and build the system that runs it. For 15 years that meant hand-built budgeting and cash-flow systems for multi-million-dollar nonprofits, where the controls were strict and the money was real.

That work produced ZenoBudget (real-time budget tracking for nonprofits), Hierarchy Budget (budgeting around human needs, for households) and Zeno ERP (operations and a full ledger for property managers, developers and contractors).

Zeno is the same craft pointed at the books you already keep: your AI prepares the work, and an accountable person approves what posts.

Who builds Zeno

Zeno is built by Zeno Services, a team of accountants who code. We keep real books and write the software that keeps them, so neither one is an afterthought.

Eli Mandel

Founded by Eli Mandel, an Advanced Certified QuickBooks ProAdvisor in both QuickBooks Online and QuickBooks Desktop, with 20 years of experience in outsourced bookkeeping and custom software development. Eli holds a Master’s in Accounting from Fairleigh Dickinson University. LinkedIn

The same questions come up in that work: Which bills are still waiting? Why was this expense coded here? What did we agree with the client last month? Zeno helps you answer those questions and get the routine entries ready, so you can spend more time on the decisions that need you.

For owners who want to understand their numbers

Ask who owes you money, which bills are coming due or why expenses changed. See the QuickBooks transactions behind the answer and ask follow-up questions. You can work with your bookkeeper without taking over the bookkeeping.

For bookkeepers who have more than data entry to do

Ask your assistant to prepare bills, code card charges or match receipts. Review the proposed entries together, leave out anything that needs more information and approve what is ready to post.

Save the coding rules and client instructions you want to use again. The next person working on the books can find those notes and see what was already done, without searching someone else’s chat history.

Keep the AI assistant you choose

Zeno works with Claude and ChatGPT. Your assistant helps research and prepare the work; Zeno keeps the company’s saved instructions, proposed entries and posting history together. QuickBooks remains your accounting system.

You review planned entries before they post. Your approval covers the work you saw, and you can look up the source documents, decisions and results afterward.

Built from work we do ourselves

Before bringing Zeno to QuickBooks, we built software for running a business and keeping its books. We used it to prepare entries, save company instructions and review changes in books we actually work on and close.

That experience shaped Zeno for people who want the same help in the QuickBooks companies they already use.

Choose Zeno for the books you keep

Zeno for Business is for a company’s owners and the people who keep its QuickBooks Online books. Zeno for Firms helps accounting and bookkeeping firms manage outside clients on QuickBooks Online and Desktop. Zeno, installed on Windows, runs on the PC where you work with your company files.

Let AI do more bookkeeping. Keep the final decision human.