Track income, expenses and taxes — with AI-powered advice for freelancers and autonomous workers living in Japan.
Designed for the unique complexity of freelance life in Japan — from PayPay to 確定申告.
Ask anything about taxes, invoices, or savings — in English, Portuguese, or Japanese. Powered by Claude AI.
Claude AIEstimates income tax, resident tax, health insurance, and pension. No more surprises.
Japan TaxSnap a photo — AI reads the receipt, extracts amount, date, and store. Auto-fills your transaction.
AI + OCRTrack via PayPay, bank transfer (振込), cash, and card. Built for Japan.
振込 · PayPay · カードDynamic cash flow charts, expense breakdowns, and monthly comparisons.
AnalyticsEnglish, Portuguese, and Japanese — the entire app including AI adapts to your language.
EN · PT · JASign up in 30 seconds. No credit card required.
Take a photo — AI reads it. Or type it yourself.
Ask the AI about taxes, deductions, or savings.
Export reports for your 確定申告.
Start free. Upgrade when you need more. Cancel anytime.
💳 Credit Card · PayPay · Bank Transfer (振込) · All prices in Japanese Yen (¥)
"Finally an app that understands PayPay and 振込 — and explains Japanese taxes in Portuguese."
"The AI helped me understand 確定申告 for the first time. I saved ¥80,000 in deductions."
"日本語でAIに質問できるのが最高。確定申告も怖くなくなりました。"
Join freelancers across Japan who use KashiKai to manage money, minimize taxes, and grow with confidence.