What Is 'PEAK', Thailand's Cloud Accounting Tool — and How It Changes SME Bookkeeping
PEAK is a widely used cloud accounting tool in Thailand. We walk through its strengths — VAT/WHT handling, e-Tax Invoice support, real-time sharing — and how moving off Excel and paper transforms day-to-day bookkeeping, from an implementer's point of view.
What is PEAK
PEAK is a cloud accounting tool widely used in Thailand. From issuing invoices to bookkeeping, aggregating VAT and withholding tax (WHT), and producing financial statements, everything runs in the browser — and the accounting firm and its client can share the very same screen in real time.
While accounting at the Japan HQ moves to the cloud, it is common for the Thai entity alone to stay on Excel and paper. PEAK is one way to resolve that "only the local side is left behind" situation.
Why it suits Japanese SMEs
- Built for Thai tax from the start — VAT and WHT aggregation and reports come out in local format
- e-Tax Invoice & e-Receipt ready — easy to align with the Revenue Department's e-invoicing scheme
- Real-time sharing — HQ, the local team, and the accounting firm all see the same numbers at once
- No more double entry — eliminates re-keying from Excel or paper, reducing input errors and double counting
What changes after adoption
At one client that moved from Excel and paper invoicing to PEAK, the monthly numbers — which used to settle only in the second half of the following month — became visible in real time, and the monthly bookkeeping workload was cut by roughly 60%. VAT and WHT aggregation was automated, sharply reducing errors caused by manual work.
The rollout, and what to watch
PEAK is not "install it and you're done." What determines the outcome is the design of your chart of accounts and department codes. Unless the initial setup is shaped around the numbers management and HQ actually want to see (by outlet, by department, by product, and so on), Excel aggregation will linger even after go-live.
A typical flow: (1) define requirements → (2) design chart of accounts and department codes → (3) migrate existing data and opening balances → (4) train local staff and HQ accounting.
How we help
At MIRAI BizLab we support the whole journey — selecting PEAK, initial setup, chart-of-accounts design, data migration, and operational training. Our strength is designing it to satisfy both Thai local requirements and the management-accounting reports your Japan HQ needs.
Even if you are only at the "we want visibility into local bookkeeping" or "we want to get off Excel" stage, please feel free to reach out.
