Location guide · Japan

Custom ERP, AI Agent & SaaS Development in Japan

Location guides for 2 cities in Japan, from Tokyo and Osaka. Flip Retail builds custom ERP, AI agents, web applications and SaaS for businesses in Japan from Jaipur, India, and delivers remotely.

City guides
2
Jaipur time is
3 h 30 min behindStandard time
Currency
Japanese yen (JPY)
Indirect tax
10%Consumption tax
E-invoicing
VoluntaryJP PINT (Peppol)
Data protection
APPI

01 — Compliance

Rules your software must follow in Japan

Tax, e-invoicing, data-protection and AI rules that shape an ERP, billing system or AI agent in Japan. Last reviewed October 2026.

Indirect taxConsumption tax (JCT), standard rate 10% (8% reduced)Consumption tax is 10% (including local portion) with an 8% reduced rate for food and newspapers. Since October 2023 input-tax credits require qualified invoices from registered issuers showing the registration number and tax by rate.
E-invoicingVoluntary · Qualified Invoice System; JP PINT (Peppol) e-invoicesThere is no e-invoicing mandate, but the Qualified Invoice System sets strict invoice content rules and the government promotes Peppol-based JP PINT. Under the 2026 tax reform (enacted 31 Mar 2026), the transitional credit for purchases from unregistered suppliers fell from 80% to 70% on 1 Oct 2026, then 50% from Oct 2028 and 30% from Oct 2030.
Data protectionAct on the Protection of Personal InformationIn force and enforced by the Personal Information Protection Commission, with mandatory breach reporting and cross-border transfer disclosure rules since the 2022 amendments.
AI rulesThe AI Promotion Act (passed May 2025, fully in force from 1 September 2025) is a non-punitive framework law that set up the AI Strategy Headquarters and an AI Basic Plan, complemented by government AI guidelines for business.
Systems we migrate from or connect tofreee, Money Forward Cloud, Yayoi, Kanjo Bugyo (OBC), OBIC7, SAP, Oracle NetSuiteMasters, ledgers, stock and open balances move across and are reconciled before cutover.
Payment rails for web apps and SaaSPayPay, Konbini (convenience-store) payments, Pay-easy, Bank transfer (Zengin), GMO Payment Gateway, Stripe
Also worth knowingThe Electronic Bookkeeping Act requires electronically received transaction data (e.g., PDF or EDI invoices) to be stored electronically with search and integrity controls, and the transitional input-credit cap is JPY 100 million of purchases per supplier from October 2026.

General information, not legal or tax advice. Rules change, so we confirm current requirements during discovery; your tax adviser should confirm anything that affects filings.

Sources consulted:

02 — Cities

2 city guides in Japan

Each guide covers the local economy, the industries we would build for first, and how working with Jaipur fits your hours.

Japan

  • TokyoFinancial services & fintech, Electronics & electricals
  • OsakaElectronics & electricals, Pharma & life sciences

03 — Industries

Industries we would build for in Japan

The industries that come up most across the cities we cover in Japan.

Electronics & electricals

ERP
Component-level bills of materials with approved alternates, reel and lot tracking, serial-number warranty records, and planning for long-lead parts.
AI agent
An agent that watches open purchase orders and supplier emails for lead-time changes and alerts planners before a shortage stops the line.
Portal or app
Warranty-registration and service-request apps for customers and dealers.
Software for electronics & electricals

Financial services & fintech

ERP
Loan and policy lifecycle tracking, reconciliations, commissions and regulatory reporting, with role-based access, maker-checker approvals and audit logs.
AI agent
A document agent that reads bank statements, payslips and IDs, extracts what underwriters need and flags inconsistencies for a person to check.
Portal or app
Customer and partner portals, dashboards and APIs for fintech products, with the security reviews that come with them.
Software for financial services & fintech

Professional services

ERP
Time, billing and engagement management, with utilisation dashboards and document workflows, for firms that sell expertise by the hour or by the project.
AI agent
A knowledge agent that searches the firm's past work, templates and policies using retrieval-augmented generation and drafts first versions for a professional to review.
Portal or app
Client portals for document exchange, approvals and invoices.
Software for professional services

04 — Services

What we build for businesses in Japan

03

AI agent development

Custom AI agents that do real work inside your business: qualify leads on WhatsApp, read and key documents, take orders, chase payments and update your ERP or CRM, with a person approving anything that matters.

Learn more
04

Web application development

Customer portals, internal tools, dashboards, marketplaces and workflow apps, built with React and Next.js on solid back ends and APIs, and shipped in two-week increments you can use as they are built.

Learn more
05

SaaS product development

From MVP to multi-tenant platform: we design, build and run SaaS products with subscription billing, tenant isolation, role-based access and AI features built in.

Learn more

05 — FAQ

Custom software in Japan: common questions

Do you work with businesses in Japan?

Yes. Flip Retail is based in Jaipur, India, and works with Japan businesses remotely. We have no office in Japan; discovery happens on video calls, you get working software every two weeks, and the engineers who write the code are on the calls.

Can a custom ERP handle Consumption tax and e-invoicing in Japan?

Yes. Invoicing is built for Japan's Consumption tax (standard rate 10%). There is no e-invoicing mandate, but the Qualified Invoice System sets strict invoice content rules and the government promotes Peppol-based JP PINT. Under the 2026 tax reform (enacted 31 Mar 2026), the transitional credit for purchases from unregistered suppliers fell from 80% to 70% on 1 Oct 2026, then 50% from Oct 2028 and 30% from Oct 2030. If you or your customers want it, a custom ERP can connect to JP PINT (Peppol) through an accredited provider.

How do you handle APPI?

In force and enforced by the Personal Information Protection Commission, with mandatory breach reporting and cross-border transfer disclosure rules since the 2022 amendments. You choose where the system is hosted, access is role-based, and we work on test or masked data during development wherever possible.

Can you migrate us from freee, Money Forward Cloud or Yayoi?

Yes. Masters, ledgers, stock items and opening balances move across and are reconciled with your accountant before cutover, ideally at a year-end or quarter-end.

Are there AI rules we need to follow in Japan?

The AI Promotion Act (passed May 2025, fully in force from 1 September 2025) is a non-punitive framework law that set up the AI Strategy Headquarters and an AI Basic Plan, complemented by government AI guidelines for business. We design AI agents with logging, human oversight and clear disclosure from the start, which covers most current requirements.

Contact

Let's build it.

Tell us about the process you want fixed in your Japan business. We reply within one working day.

Opens your mail app with the message ready to send.