Record a transaction
Choose a transaction type, enter the amount and add a description.
YOUR BOOKS, AT A GLANCE
See where your business stands.
Income, expenses and monthly trends, together in one overview. These are real app screens using fictional demonstration data.
A SIMPLE DAILY ROUTINE
One transaction at a time.
Build your books
Review the proposed journal entry before saving. Your journal and ledger follow from the entries you confirm.
Prepare for tax season
Review your reports, export your records and gather the information you need for filing in Japan.
THE TOOLS FOR YOUR RECORDS
From daily entries to a clearer picture.
- Transaction entry
- Double-entry bookkeeping
- Journal
- General ledger
- Profit and loss
- Balance sheet
- Monthly summaries
- CSV export
- Print / save as PDF
- Correction and cancellation history
- Backup and restore
INSIDE TAX RETURN
A place for every part of your bookkeeping.
An approachable entry form.
A clear form for sales, expenses, receivable collections and more. Check the journal entry before it becomes part of your books.
Your records, in order.
Review dates, accounts and amounts in the journal, or follow an account through the general ledger.
Reports that connect the details.
See profit and loss, your balance sheet and monthly totals based on the records you have entered.
LOCAL FIRST
Your ledger lives on your PC.
Bookkeeping data is stored in your Windows user data folder. Everyday use does not depend on cloud accounting or a monthly plan. Keep regular backups somewhere safe.
A first-time setup downloads a small Python runtime automatically if it is missing. After setup and local licence validation, normal bookkeeping works locally. You do not need to install Python or use a terminal.
LICENSE
Pay once. Keep your daily routine simple.
The purchased licence key is checked locally by the app. Keep your key and purchase details safe. The app does not bind this licence to a hardware identifier.
US$5one-time purchase
No subscription.
Checking purchase availability…What happens after purchase?
- Purchase through the official checkout.
- After payment is confirmed, the official-store return page shows your license key and ZIP download.
- Extract the ZIP and open SEQUIN TAX RETURN.exe.
- Enter your licence key and start your records.
Use the same browser for checkout and the return page. Save your key and ZIP within 7 days. For BOOTH or itch.io purchases, follow that store’s delivery instructions. Contact us with your purchase reference if you need help.
REQUIREMENTS
Designed for a Windows desktop.
- Platform
- Windows x64 desktop. Microsoft Edge is required; this package is not for macOS, Linux or Windows ARM.
- App window
- Microsoft Edge is required. The launcher opens the app in its own window without a browser address bar.
- First setup
- Internet access for the initial runtime download when needed. No separate Python installation or terminal commands.
- Records
- Japanese interface, yen-denominated bookkeeping and the 2026 accounting year. Records and backups are stored in your Windows user data folder.
BEFORE YOU BUY
Bookkeeping and preparation, with a clear scope.
What it helps you do
Daily bookkeeping; double-entry journals and ledgers; profit and loss and balance-sheet summaries; Japanese tax-return preparation; CSV export, printing and backups.
What it does not provide
Tax advice or tax-accountant services; guaranteed tax calculations; e-Tax transmission; preparation or filing on your behalf; or guaranteed acceptance by the tax office.
This app does not complete a tax return for you and is not general-purpose tax-filing software for other countries. Confirm the tax treatment of your transactions and filing requirements with appropriate sources or a qualified professional.
SEQUIN TAX RETURN
Make room for a simpler bookkeeping habit.
Local records. Clear books. One-time purchase.
US$5one-time purchase
Checking purchase availability…Displayed prices include applicable indirect tax. Confirm the currency and total at checkout.