bookmi. AI Accounting
Bookmi AI Accounting records each transaction the moment it happens, never rewrites a posted entry, and keeps a record of everything the AI relied on and how it decided. It isn't conventional accounting software with a chat box added on. We designed the structure of the ledger itself on the premise that AI does the bookkeeping.
In most accounting software, the AI sits outside the ledger. It reads the data and answers questions, suggests candidate entries, and a person does the posting. What the AI proposed and how a person changed it never makes it into the books. Bookmi treats AI as one of the ledger's authors, and keeps everything from proposal to posting as a single record.
Running in real time, records that can't be rewritten, and a trail behind every decision. If AI is writing to your books, none of them is optional.
Real time
Bank and card transactions, invoices you issue, receipts you photograph, bookings and sales. Each one becomes a draft entry as soon as it comes in, and your balances and trial balance show today's numbers whenever you open them. Anything unclear is checked the same day, so you never sit down at month-end with transactions you can't remember.
Immutable
A posted entry can't be overwritten or deleted. To correct it, you cancel it with a reversing entry and add the correct one. Each entry is linked to the one before it by a hash, so any later rewrite would show. This is also how the correction and deletion history required by the Electronic Bookkeeping Act (電子帳簿保存法) is kept.
Audit trail
For every entry we record the receipt and statement line it rests on; whether a rule, the accounting model, AI or a person proposed it; the model version; the confidence score; the checks it passed; and who approved it. In a tax audit you can explain each entry one by one, and you can pull out just the entries made by a particular model version to review them.
The highest accuracy scored by 19 general-purpose AI models on 101 accounting tasks, March 2026*
That works out to more than 20 errors in every 100 entries. Accounting isn't work where roughly right is good enough. Bookmi lets AI, which answers in probabilities, do only the “choosing.” Amounts, tax and the balance of debits and credits are calculated by fixed rules.
A transaction you've had before gets the same entry as before. Rules your company sets live here too. Fast, and the same result every time.
Bookmi's own model, built solely to predict the account and tax category. It gives a confidence score for each candidate.
Reads only images of receipts and invoices, and descriptions that are ambiguous. It can only choose accounts from your company's chart of accounts, and never writes amounts or tax.
Debits equal credits, valid account and tax category pairs, reduced tax rates, invoice registration numbers, and no writes to closed periods. All checked by code.
Entries are routed by confidence and amount. Fixed assets, entertainment expenses, transactions involving directors and large transactions are always reviewed by a person, whatever the confidence.
Each correction is saved as a pair: what was proposed and what it became. When the same correction keeps coming up, it becomes one of your company's rules.
At first, you review every entry. Automatic posting is then turned on account by account, starting with the accounts where accuracy on your own books passes the threshold.
Rules created from your corrections are used only within your company's books. They are never mixed with other companies' data, and Bookmi does not use them to train AI models.
* “AI Accounting Benchmark” by DualEntry, a US accounting software company, published March 10, 2026. The benchmark gave 19 general-purpose AI models 101 accounting tasks in English, based on US practice (transaction categorization, journal entries, accounts payable, accounts receivable, bank reconciliation, month-end close and more). The top score was 77.3%, by OpenAI GPT-5.4. The top score on the same benchmark has since risen to 91.1% (as of October 2026).
From daily bookkeeping to financial statements and the documents you submit to the tax office and your municipality. What freee splits into separate products such as freee申告 and freee支出管理, Bookmi produces from the same ledger at no extra charge.
Drafts of all 16 statements in the National Tax Agency's formats, from your ledger balances and business partner details.
Balance sheet, income statement, statement of changes in equity, notes to the financial statements
Business description, monthly sales, headcount and more, from your books and payroll data
The return and the itemized schedule by asset type for your municipality, from the fixed asset register
General method, simplified method and the 20% special measure, including the invoice system's transitional measures
Straight-line and declining-balance methods, lump-sum depreciable assets, and the special rule for low-value depreciable assets
Petty cash for each store or department, from day-to-day cash in and out
Journal, general ledger, subsidiary ledgers, trial balance, cash book
Books, year-end materials and receipts, plus journal entries in Yayoi and freee import formats, in one package
※ Please leave the preparation and filing of the corporate tax return (別表) and any tax consultation to your tax accountant.
We compared the smallest setup for a company with one user. freee and Yayoi cost less for the base plan; once you include the year-end and tax documents, Bookmi costs less than freee.
Included as standardText only: separate product, extra fee or higher plan
| Bookmi AI AccountingSolo (1 user) | freee会計ひとり法人 (1 user) | 弥生会計 Nextエントリー (3 users) | |
|---|---|---|---|
| Price (tax incl.) | |||
| Annual | ¥68,000/yr | ¥39,336/yr | ¥38,280/yr |
| Monthly | ¥6,800/mo | ¥4,378/mo | ¥3,828/mo |
| Annual cost with year-end and tax documents | ¥68,000/yr (nothing extra) | From ¥137,896/yr | Accounting software + separate filing software |
| AI | |||
| Where the AI sits | Author of the ledger. Proposal, evidence and approval recorded for every entry | AI-OCR and transaction prediction. AI assistant under a separate contract | Account prediction, AI-OCR, AI transaction entry |
| AI trail for each entry (model, confidence, evidence) | Not stated | Not stated | |
| AI reading of receipts and invoices | 弥生証憑 Next | ||
| Daily bookkeeping | |||
| Bank and card statement import | Bank API connections | ||
| Invoicing (qualified invoice system) | |||
| Expense claims | Staff claims on Light and up | スターター and up (¥330/user/mo) | ベーシック and up |
| Electronic Bookkeeping Act (電子帳簿保存法) | |||
| Consumption tax return | Separate filing software | ||
| Year-end and tax documents | |||
| Financial statements | |||
| Fixed asset register and depreciation | |||
| Account breakdown statements (勘定科目内訳明細書, 16 types) | freee申告 (from ¥32,780/yr) | Separate filing software | |
| Corporate business overview (法人事業概況説明書) | freee申告 (from ¥32,780/yr) | Separate filing software | |
| Depreciable asset return (償却資産申告書) | freee申告 償却資産 (¥65,780/yr) | PDF export of filing data | |
| Petty cash book | freee支出管理 (free for 1 book) | Not stated | |
| Tax accountant package (books, year-end materials, receipts, Yayoi/freee-format entries) | Not stated | Not stated | |
| Sharing with your tax accountant | Invite with view-only access | Free invites, no user limit | Data sharing with partner firms |
| Corporate tax return (別表) and e-filing | Your tax accountant | freee申告 (from ¥32,780/yr) | Separate filing software |
The work before and after each entry moves forward while staying connected to the ledger.
Take a photo on your phone. AI reads it, checks the registration number and drafts the entry.
Imported transactions are matched against invoices and expenses automatically.
Invoices that meet the qualified invoice system. Sales are recorded the moment you issue them.
Employees snap and submit. Once approved, the entry and the payment data are ready.
Payroll and social insurance entries, created automatically from your payroll results.
Records are searchable by date, amount and business partner, and every correction and deletion is kept on record.
Import journal entries, business partners and employees from freee, Money Forward and Yayoi.
AI agents such as Claude and ChatGPT can look up your books through our API and MCP.
Invite your tax accountant and they can see the same books directly. At year-end, hand them the tax accountant package, which brings together your books, year-end materials and receipts with journal entries in 弥生会計 and freee会計 import formats. Tax decisions and filing stay with your tax accountant, as before.
Every accounting feature is available on every plan, including the account breakdown statements (勘定科目内訳明細書) and the depreciable asset return (償却資産申告書). If it's just you, choose Solo; if you have employees, start with Light.
Guided setup included — your 30 days start once setup is done
Before it's posted, you simply fix it on the review screen. A mistake found after posting is corrected with a reversing entry, and the original entry, the reason for the correction and the person who made it all stay on record. You can also pull up every other entry made by the same model version in one go.
It comes from a benchmark published in March 2026 by DualEntry, a US accounting software company, which gave 19 general-purpose AI models 101 accounting tasks in English, based on US practice. 77.3% is the accuracy of the best performer, OpenAI GPT-5.4. Newer models have since raised the top score on the same benchmark to 91.1% (as of October 2026), but that still works out to nearly 9 errors in every 100 entries. And these are not Japanese accounting or tax tasks. That is why Bookmi doesn't leave bookkeeping to general-purpose AI, and instead surrounds it with rules, a dedicated model and verification.
Yes. You can import journal entries, business partners and employees from freee, Money Forward and Yayoi files. Even partway through a fiscal year, you can start by matching your opening balances.
That's fine. You can export journal entries in 弥生会計 and freee会計 import formats, and the tax accountant package uses the same formats. You can also invite your tax accountant to look at your Bookmi books directly.
Bookmi can prepare your financial statements, all 16 account breakdown statements (勘定科目内訳明細書), the corporate business overview (法人事業概況説明書), the depreciable asset return (償却資産申告書) and the consumption tax return. Please leave the preparation and filing of the corporate tax return (別表) and any tax consultation to your tax accountant. Bookmi does not provide tax representation or tax consultation.
Yes. Posted entries can't be rewritten, and every correction and deletion is kept on record. Records are searchable by date, amount and business partner. The registration numbers needed for input tax credits are checked at the time a document is read.
Bookmi does not use your company's data to train AI models. Rules created from your corrections are also used only within your company's books. Your data is stored in data centers in Japan (Tokyo).
