Corporate Secretarial · Scenario S.26
Change Your Thai Company's Fiscal Year
A fiscal year change is not simply a date update — it creates a transitional accounting period with its own audit, AGM, and tax return obligations; it requires a shareholder resolution, an MOA amendment, and notification to both the DBD and the Revenue Department; and the effective date must be chosen with care, as it determines the length of the transitional period and the timing of every compliance obligation that follows. UnionSPACE reviews the implications before the date is fixed, prepares every document required, and manages all authority notifications — completed in 7–14 working days.
Why Fiscal Year Changes Require Advance Planning — Not Just Documentation
Changing a fiscal year is one of the corporate changes most likely to be approached as a paperwork exercise — and one of the changes most likely to create downstream compliance problems if the effective date is chosen without considering the consequences.
Every fiscal year change creates a transitional period — the gap between the end of the last full fiscal year and the start of the new one. That period may be as short as a few months. It requires its own set of audited financial statements, its own AGM, and its own tax return. The AGM and filing deadlines for the transitional period are calculated from its end date — which may fall in an unusual month, creating compliance obligations the company is not expecting.
UnionSPACE reviews the full compliance implications of the proposed change — including transitional period length, audit timing, and the AGM and tax deadlines that will result — before any effective date is confirmed. The documentation is then prepared and filed with the DBD and Revenue Department within 7–14 working days.
How Much Does a Fiscal Year Change Cost in Thailand?
Fiscal Year Change
Fee Breakdown
All-inclusive. No hidden charges. No office visits required.
Information & Document Verification
Review of proposed change, transitional period implications, and compliance requirements
THB 2,000
Shareholder Resolution & MOA Amendment
Resolution approving the fiscal year change and MOA amendment where required
THB 4,500
Printing & Disbursements
Document production and incidentals
THB 500
DBD Filing & Authority Notifications
DBD MOA amendment filing and Revenue Department notification
THB 2,500
Total Fee. Everything included.
Standard Fiscal Year Change
Resolution and MOA amendment through DBD and Revenue Department notifications — 7–14 working days
Total fee
THB 9,500
Transitional period accounting & audit
The transitional accounting period requires its own audited financial statements — handled by our accounting team separately
See also
Accounting service
Government fees for DBD filing where applicable are charged at cost and billed separately. Prices shown in Thai Baht (THB) and exclude VAT.
Get Started Talk to UsThe effective date of a fiscal year change determines the length of the transitional period and the timing of all compliance obligations that follow. We recommend engaging us before fixing the date so we can review the implications and advise on the most practical effective date for your circumstances.
What Is Included in the Fiscal Year Change Package?
Every document and notification required — from resolution through to authority acknowledgement
Standard Package
Fiscal Year ChangeFixed fee THB 9,500 |
|---|
| Proposed fiscal year review and compliance implications assessment | |
| Transitional period length and downstream deadline analysis | |
| Company document verification | |
| Shareholder resolution drafting — fiscal year change approval | |
| MOA amendment drafting (where fiscal year is stated in MOA) | |
| Shareholder execution coordination | |
| DBD filing and acknowledgement | |
| Revenue Department notification and schedule update | |
| Authority acknowledgement receipt (where applicable) | |
| Transitional period accounting, audit, and tax return | Accounting service |
Prices are fixed and transparent. Shown in Thai Baht (THB) and exclude VAT. This service covers the corporate secretarial and authority notification component. Transitional period accounting, audit, and Revenue Department tax return are handled as a separate accounting engagement.
Three Compliance Consequences to Review Before Fixing the Effective Date
We assess each of these before any documentation is prepared
The Transitional Period
Every fiscal year change creates a transitional accounting period — from the end of the last full year to the start of the new one. This period requires its own audited financial statements, AGM, and tax return. A poorly chosen effective date can create an unexpectedly short transitional period with compressed audit and filing deadlines, or an unusually long one that increases accounting costs. We map out the transitional period and its obligations before the date is confirmed.
Authority Notifications
Both the DBD and the Revenue Department must be notified. Where the fiscal year is stated in the MOA, the DBD requires an MOA amendment filing. The Revenue Department requires a notification to update the company's tax return schedule — affecting when the Por Ngor Dor 50 corporate income tax return will next be due. Notifications sent to the wrong office or in the wrong form create a mismatch between the company's records and its legal position.
Group and Banking Alignment
Where the change is driven by a need to align with a parent company's reporting cycle or a banking covenant, the new fiscal year must match the required dates precisely — not approximately. A fiscal year that ends on 31 December for DBD purposes but on a different date for group reporting creates a permanent reconciliation burden. We confirm the required alignment before the resolution and MOA amendment are drafted.
From compliance review to authority acknowledgement — what happens at each stage
How We Handle a Fiscal Year Change in Thailand
Compliance Review & Effective Date Planning
We begin by reviewing the proposed new fiscal year against the company's current position — calculating the length of the transitional accounting period, the AGM deadline that will apply to the transitional period, and the first tax return due date under the new cycle. We confirm whether the fiscal year is stated in the MOA (which triggers an amendment filing) and identify every authority that must be notified.
The effective date is the most consequential decision in a fiscal year change. A date chosen for convenience — for example, the date the resolution is signed — may create a transitional period that is too short for the auditor to complete their work before the AGM deadline. We present the options and their compliance implications before the date is confirmed, so it is chosen with full knowledge of the consequences.
Information & Document Verification
We collect the current company affidavit, MOA, and relevant registration documents to establish whether the fiscal year is expressly stated in the MOA and to confirm the shareholding structure for the resolution. We verify the proposed start and end dates of the new fiscal year and confirm the effective year in which the change applies.
Where the change is required to align with a parent company's reporting cycle or a bank covenant, we confirm the exact dates required by the group or the lending institution before the resolution is drafted — so the new fiscal year is stated correctly in every document the first time.
Shareholder Resolution & MOA Amendment Drafting
We draft the shareholder resolution approving the fiscal year change — specifying the new accounting period start and end dates and the effective year — and, where required, the MOA amendment reflecting the new fiscal year. Both documents are sent to you for review before finalisation and execution is coordinated with the shareholders.
The resolution and the MOA amendment must state the new fiscal year in precisely the same terms that will be recognised by the DBD and the Revenue Department. Inconsistencies between the documents, or between the documents and the authority notifications, create a mismatch in the company's regulatory records that must be corrected by further filings.
DBD Filing & Authority Notifications
We submit the MOA amendment to the DBD where required, notify the Revenue Department to update the company's tax filing schedule, and manage all officer liaison until acknowledgements are received. We deliver the authority acknowledgements digitally and provide a compliance note confirming the new fiscal year cycle and the key dates that will apply going forward — including the AGM deadline and tax return due date for the transitional period.
The compliance note we provide at completion is the practical document the company needs: not just confirmation that the change is registered, but a clear statement of the first compliance obligations under the new cycle so the auditor, accountant, and directors can plan accordingly.
- Drafting and signing coordination: 2–5 working days from receipt of required information.
- Authority processing and acknowledgement: 5–9 working days where applicable.
- Total end-to-end: 7–14 working days.
Frequently Asked Questions — Fiscal Year Changes in Thailand
Answers to the questions we are asked most often
The most common reasons are: aligning with a parent company or group reporting cycle; transitioning to a 31 December year-end to match the standard Thai corporate calendar and simplify AGM and tax deadline management; restructuring following an acquisition; or correcting a non-standard year-end established at incorporation. A fiscal year change affects audit timing, AGM deadlines, and tax return due dates — all of which must be considered before the effective date is fixed.
Yes. Every fiscal year change creates a transitional accounting period — the gap between the end of the last full fiscal year and the start of the new one. This period may be shorter or longer than 12 months. It requires its own audited financial statements, its own AGM approval, and its own corporate income tax return. The compliance deadlines for the transitional period are calculated from its end date — which may fall in an unusual month. We map out the transitional period and all resulting deadlines before the effective date is confirmed.
The DBD must be notified if the fiscal year is stated in the MOA — which triggers an MOA amendment filing. The Revenue Department must be notified to update the company's tax return filing schedule. Where the company is VAT-registered, holds specific licences, or is subject to additional regulatory oversight, further notifications may be required. UnionSPACE identifies all required notifications based on the company's registration position before preparing any document.
A shareholder resolution is required. Where the fiscal year is stated in the MOA, the resolution must also approve the MOA amendment — which requires a three-quarters special resolution majority. Where the fiscal year is not stated in the MOA, an ordinary shareholder resolution is sufficient. We confirm which threshold applies based on the company's MOA before the resolution is drafted.
The optimal timing depends on the company's circumstances. Changing at the end of a full fiscal year creates a clean transition — the last full-year accounts close normally and the new fiscal year begins immediately after. Changing mid-year creates a shorter transitional period, which may be convenient if the target date is approaching, but compresses the audit and AGM timeline for that transitional period. We review the options and present the compliance implications of each before recommending the most practical effective date.
Thai law does not prescribe a minimum interval between fiscal year changes, but each change creates a transitional period with its own compliance obligations — audit, AGM, and tax return. Frequent changes create operational complexity and are likely to attract Revenue Department attention. In practice, a fiscal year change is a one-time realignment rather than a recurring adjustment.
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Choose the Effective Date Before Preparing Any Document
The Date You Choose Creates Compliance Obligations You May Not Be Expecting
Every fiscal year change creates a transitional accounting period with its own audit, AGM, and tax return. The effective date determines when those obligations fall due. We review the implications before you commit to a date — then handle every document and notification that follows.
THB 9,500 — all-inclusive. Resolution, MOA amendment, DBD and Revenue Department notifications. 7–14 working days.
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