BUSINESS IN THAILAND / CASE STUDY
A fictional Thai online retailer wants to move to a new accounting provider while continuing to sell through a web store and two marketplaces. This example follows the handover from scope and access through opening-balance review to the first monthly close. All business facts and figures are illustrative; this is not a record of a completed client engagement.
Information reviewed 13 November 2026 · Pimaccounting
The brief: continuity without losing the transaction history
The retailer receives orders continuously, holds its own inventory and uses several payment channels. The outgoing accountant has filed returns and prepared accounts, but the owner cannot easily explain the marketplace clearing balances. Refunds, payout delays and platform deductions are tracked in different files.
The proposed mission has two connected objectives: transfer records and responsibilities without a gap, then establish a reconciled first close under the new arrangement. A successful transfer requires evidence that balances are supported, not merely a new software login or a folder labelled “final”.
On smaller screens, scroll the table sideways to see all columns.
| Question at kickoff | Decision or evidence needed |
|---|---|
| Where does the old provider stop? | A defined cutoff date and list of open periods |
| Who files the next return? | A named preparer, approver and payment owner |
| What does the clearing balance represent? | Order, refund, fee and payout detail by platform |
| Are opening balances supported? | Trial balance, reconciliations and schedules |
| Can the company retrieve its records? | Authorised exports, file inventory and access plan |
Stage 1: agree the transfer protocol
Create a responsibility matrix for the transition month. Identify who handles each return, payroll run, outstanding question and annual task. Keep the departing provider’s agreed responsibilities visible until the handover is accepted. Resolve commercial matters separately from determining which records and authorisations the company needs.
Request the general ledger, trial balance, bank reconciliations, platform schedules, stock and asset records, customer and supplier balances, tax computations, filed returns and payment evidence. Specify file format, period coverage and document references. Preserve an unaltered export before mapping the information into a new system.
Use the changing-accountants guide and the handover worksheet to record requested, received and verified status. These are different milestones.
Stage 2: map the transaction and document flows
Document how an order moves from acceptance through payment, shipment, refund and platform settlement. Establish the identifiers connecting store orders, marketplace reports, courier or payment records and the bank. Check whether a cancellation, return and refund are recorded at different dates and which report is the source for each event.
Map accounts and tax classifications only after understanding the business model. Principal-versus-agent arrangements, deposits, delivery charges, seller-funded promotions and platform-funded discounts can require different analysis. The illustration does not prescribe a single journal template for all platforms.
- Retain gross activity and deductions separately in the reconciliation.
- Keep settlement timing differences distinguishable from errors.
- Use consistent product and channel references across exports.
- Restrict migration access to authorised users and keep the company in control of its records.
- Test a representative set of orders, refunds and payouts before importing a full period.
Worked example: explain a platform closing balance
The following amounts are fictional. This is a simplified clearing-account control, not a tax calculation or a revenue-recognition policy. Assume every item belongs to the same platform, currency and agreed reconciliation period.
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| Control movement | Illustrative amount (THB) |
|---|---|
| Opening amount due from the platform | 80,000 |
| New customer collections recorded by the platform | 150,000 |
| Refunds deducted | (10,000) |
| Platform fees deducted | (15,000) |
| Payouts received in the bank | (170,000) |
| Expected closing amount still due | 35,000 |
The movement is 80,000 + 150,000 − 10,000 − 15,000 − 170,000 = 35,000. The closing amount should be explained by identifiable unsettled activity, not accepted solely because the arithmetic balances. Subsequent payouts can help test settlement timing, while disputed deductions remain visible as exceptions.
Reconcile the control to source reports and the ledger. Review the tax and accounting treatment of the underlying transactions separately under the applicable reporting framework and invoice requirements.
Stage 3: validate opening balances and stock
Compare the received trial balance with the last agreed accounts and supporting schedules. Identify differences between the ledger export, filed returns and management spreadsheets. Agree which provider answers historical questions and whether any remediation falls outside the transfer scope.
For inventory, reconcile product quantities, receipts, dispatches, returns, damaged goods and count adjustments. A customer refund does not necessarily mean stock has physically returned in saleable condition. Match the logistics evidence before changing the quantity or value. Keep opening inventory limitations visible in any gross-margin report.
If the review exposes an earlier unsupported balance, create a separate issue with an owner, evidence request and proposed resolution. Do not overwrite it during migration to make the opening trial balance look clean. The catch-up guide explains that additional workstream.
Stage 4: confirm tax continuity
Prepare a filing status schedule showing form, entity, period, preparation status, submission evidence and payment confirmation. Confirm the company’s registrations and invoice practices against its actual supplies. The Revenue Department VAT guidance provides the general framework; the fact that a business sells online does not by itself settle every tax question.
Reconcile the first proposed returns under the new provider with the underlying records and any transition adjustments. Avoid duplicate submissions by explicitly assigning the cutoff period. Check the current tax calendar for the channel and period rather than carrying over an old deadline spreadsheet.
Stage 5: complete a parallel review of the first close
Run a first-close review using the transferred opening balances and the current month’s transactions. Compare sales and settlement reports, bank balances, stock, receivables, payables and tax schedules. A parallel review means comparing agreed control totals and investigating differences; it does not require two providers to submit the same return.
Ask management to review significant refunds, write-offs, unusual promotions and owner-related transactions. Present a short commentary explaining the numbers and the outstanding limitations. Confirm the reporting date and the point at which a draft becomes an approved management pack.
Deliverables and a handover acceptance checklist
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| Deliverable | Acceptance criterion |
|---|---|
| Transfer inventory and responsibility matrix | Records received and open periods have named owners |
| Opening-balance review | Balances tie to support or carry a stated exception |
| Platform reconciliation workbook or system report | Each clearing balance is explained by channel and period |
| Inventory and refund reconciliation | Financial records align with the reviewed physical movement |
| First close and tax status pack | Reports are reviewed and filing/payment responsibilities are clear |
| Access and retention handover | The company can retrieve records and obsolete access is removed appropriately |
Acceptance should identify unresolved issues, evidence still due and the next review date. It is not a declaration that all historical returns were correct or that the software migration itself certifies the accounts.
Dependencies, sequencing and fee drivers
An illustrative sequence is to gather records before the cutoff, validate opening balances, test mapping, process the first period and complete a post-close review. In a real engagement, the calendar is set around filing obligations, provider availability, export quality and the complexity of historical issues.
The work expands with the number of platforms, currencies, warehouses, transactions, returns, unclear balances and migration requirements. Tax amendments, inventory reconstruction, custom integrations, audit work and legal disputes should be assessed separately. The accounting scope guide helps distinguish ongoing monthly work from a one-time transition project.
Target outcomes and ongoing controls
The intended end state is an agreed cutoff, supported opening balances, reconciled platform accounts and clear responsibility for the first close. No savings, revenue growth or percentage reduction in errors is claimed. A real business should measure its own baseline and review the trend after the new process is operating.
Useful controls include unmatched settlement items by age, refunds awaiting supporting evidence, unexplained stock differences and time to resolve accounting queries. The ecommerce sector guide and reporting guide connect those controls to management decisions.
Frequently asked questions
Is this a real online retailer’s case study?
No. The retailer, amounts and circumstances are fictional. The page illustrates a possible engagement and does not report a client outcome.
Can accounting providers be changed during a financial year?
A transition can be planned around a defined cutoff and the applicable obligations. Clarify who handles open periods, returns, payroll and annual work before transferring responsibility.
Does receiving the trial balance complete the handover?
No. Review the supporting reconciliations, schedules, filings and access arrangements. Record unresolved opening balances explicitly.
Are marketplace deposits the same as revenue?
Not necessarily. Review orders, refunds, fees, timing and the business model. A clearing reconciliation explains cash movements but does not replace revenue and tax analysis.
What would make the first close acceptable?
Agreed balances and reports are reviewed, tax responsibilities are confirmed, and remaining exceptions have evidence, owners and next steps.
Official references and further reading
- TFAC — Accounting Act B.E. 2543 (English translation)
- TFAC — financial reporting standards for non-publicly accountable entities
- Revenue Department — VAT registration and tax invoices, sections 85–86
- Revenue Department — VAT registration and returns
- Revenue Department — current tax filing calendar
Reference review: 13 November 2026. Read current legislation, authority notices and case-specific requirements alongside this practical guide. Older manuals may contain superseded filing channels or rates. Service scope, professional fees, government charges and third-party costs should be confirmed separately.
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