What should AI accounting software never do on its own?

 AI accounting software should never do the arithmetic, overwrite a category you chose, delete a possible duplicate, guess what a tax payment was, or move money. Those are the lines ZeraBooks, an AI-native general ledger, draws for its own AI. They're also a fair test for any accounting tool that says AI does the bookkeeping.

More accounting products now say AI does the work. That's useful, and it raises a question owners and accountants should ask out loud: what is the AI allowed to do without me? The answer tells you more about a product than any demo.

1. Do the arithmetic

Balances, totals, depreciation, loan interest, the amount on a journal entry. All of these have exactly one right answer, and a ledger can compute them exactly every time. A language model produces likely-looking output, which is the wrong tool for a number that has to be right to the cent.

In ZeraBooks, the AI decides what a line means. The ledger's own code computes every figure. When a statement is uploaded, the ledger checks that it adds up, that it follows on from the last statement, and that the books agree with its printed closing balance. A month can't be signed off until that check passes.

2. Overwrite your decision

If you set a category by hand, that's a decision, and it should stick. A tool that "improves" your choices behind you makes the books impossible to trust, because you never know which lines still say what you put there.

When the ZeraBooks AI doubts a category you chose, it flags it for you. It doesn't change it. And when you correct one line and it offers to fix similar ones, lines you set by hand are left alone.

3. Delete a possible duplicate

Two lines with the same date, amount and description might be a duplicate. They might also be two real coffee orders, two identical rent payments for two units, or a charge and its correction. Deleting is irreversible in effect, even when it's technically undoable, because nobody goes back to check.

So ZeraBooks shows you the pair and leaves the call to you.

4. Guess at tax payments

A line that reads "IRS USATAXPYMT" or "CRA" could be the owner's personal estimated tax, a corporation's income tax, a payroll remittance or a sales tax payment. Each one is recorded differently, and the bank line usually doesn't say which.

A payment to a tax authority always comes back from ZeraBooks as a question.

5. Move money

No bill pay. No transfers. No bank connection. ZeraBooks records what happened, from your statements, and that's all. An AI that can only write to the books can make a mistake you fix with Undo. One that can send money can make a mistake you can't.

What the AI does do

Plenty. In ZeraBooks, Autopilot works through vendors and customers, categories, bills and invoices, payment matching and month-end entries. When it's sure, it acts and logs the action with Undo. When it's fairly sure, it acts and flags it. When it isn't sure, it asks you, with its best guesses as one-tap answers. Ask Zera takes whole requests in plain words, like "I'm six months behind, here are my statements, do my books", and shows every change as a card.

After a couple of months of bookkeeping, ZeraBooks categorizes 99.6% of transactions correctly, tested on years of bookkeeping for several companies. The point of the guardrails is that the other 0.4% is visible and fixable.

You can try ZeraBooks for 7 days; after that it's $79 a month on annual billing or $149 on monthly. It works from uploaded statements, PDF or CSV, with no bank feeds.

How to use this list

Take it to any vendor demo. Ask each of the five questions. A clear yes or no on each is a good sign, whichever way it goes. Hesitation on the arithmetic question is the one to weigh most.

The full explainer, including how an AI-native ledger differs from one built on bank feeds and rules, is on our page about the AI general ledger.

Written by ZeraBooks. These are the rules for our own product.

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