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Accounting Services
STA Quality Accounting Office
STA Quality Accounting Office is supported by government and private agencies. We have received awards and certificates from the Department of Business Development, Ministry of Commerce; the Revenue Department, Ministry of Finance; and the Thai Chamber of Commerce. We are the first accounting office to receive the Outstanding Ethics Award from the Thai Chamber of Commerce and the Outstanding Business Governance Award from the Department of Business Development, Ministry of Commerce. We conduct business based on the principles of good governance, transparency, honesty, social responsibility, and fairness to all involved parties. These principles are reflected in the policies and activities that STA Quality Accounting Office has consistently implemented.
Ready-made accounting software
(Sale, monthly rental)
Service details
The wrong accounting software means you cannot close your books, and the most expensive part is not the software fee
Most of the businesses that move to STA do not have a problem with software being slow or hard to use. They have a chart of accounts that was set up wrong on day one, input and output tax that is mapped to the wrong accounts, and opening balances that were never transferred in full. The result is reports that look good but cannot be used to file tax.
STA is an accounting firm first and an implementer second. We configure the software from the point of view of the people who have to sign the financial statements and file the tax, not from the point of view of a software salesperson.
We work with two options
1. PEAK - online accounting software for SMEs
Suits a business that wants to start on an online accounting system quickly, with no server to buy, accessible from anywhere.
- Issue quotations, invoices, receipts and tax invoices
- Supports electronic tax invoices (e-Tax Invoice) on the higher plans
- Manages stock and product costs
- Connects to online shops, so nothing has to be keyed twice
- Produces the financial statements and accounting reports in the same system
- Add-on modules: PEAK Payroll, PEAK Asset, PEAK Board and PEAK Tax
2. Odoo - for a business that has outgrown off-the-shelf software
STA has used Odoo as its own internet-based accounting system for internal work since 2019, and implements it for clients who have hit the ceiling of their current software, working with an Odoo Official Partner who has already built the Thai localisation.
- Full Thai tax - input and output tax with the PP 30 report, withholding tax with PND 1, 3 and 53, and e-Tax Invoice
- Multiple warehouses with storage locations, FIFO and FEFO costing
- Multiple companies in one system, with consolidation
- Complete sales and purchase cycles, from sales order to invoice to receipt, and PO to goods receipt to payable to payment
- Connects to online sales channels, pulling orders in to create sales orders and deduct stock automatically
- Can be extended into a full ERP later without migrating again
Both options are available from STA either as a purchased licence or on a monthly rental, whichever suits your cash flow.
Benefits to be received
1. The chart of accounts is set up by an accountant, not left on the software's defaults
A chart of accounts built around how your business actually works means the financial statements are readable and reconcile with the tax returns filed every period. There is nothing to unpick at year end.
2. Opening balances are transferred in full and checked on all three sides
Receivables by customer, payables by supplier and inventory are all reconciled against the prior year financial statements before the system goes live. This is the point where most implementation projects fail.
3. Tax settings correct from day one
VAT rates, the input tax codes for reclaimable and non-reclaimable tax, and withholding rates by type of income, are all mapped to the chart of accounts before handover.
4. We choose the software for the work, not the one with the best margin
We assess it on your document volume per month, the number of warehouses, the number of companies in the group and the sales channels you use. If the business is still small and a free plan is enough, we will say so.
5. The team that sets the system up is the team that reviews the accounts
When something looks wrong, we can fix it at source in the system. There is no passing the problem back and forth between the software vendor and the accounting firm.
6. When you grow, you do not start again
If one day you need multiple companies, consolidated accounts, or a full ERP, we already have a planned migration path from PEAK to Odoo.
Criteria for calculating service fees
The cost splits into 2 clearly separate parts
Part 1 - the software fee, paid to the software vendor
PEAK list prices as at August 2026 (excluding VAT, per company)
- FREE - THB 0 a year - 1 user - limited to 20 contacts and 5 products
- e-Document - THB 2,500 a year - 3 users
- BASIC - THB 5,000 a year - 5 users - bookkeeping, journals and financial statements
- PRO - THB 9,000 a year - 10 users - adds bank reconciliation
- PRO Plus - THB 12,000 a year - 10 users - adds e-Tax Invoice and PEAK Board
- PREMIUM - THB 35,000 a year - 20 users - adds purchase order control
These are the prices the vendor publishes on its website and may change. Please have the team confirm them before you decide.
Odoo is priced on the scope of work and the number of users. Ask for a quote case by case.
Part 2 - implementation and training by STA, paid to STA
Assessed on the following, not on registered capital or revenue
- The number of companies to be set up
- The document volume per month and the number of users
- Whether there is existing data to migrate, and which software it comes from
- How many online sales channels have to be connected
- The number of training hours and the length of post-handover support
Other conditions
- All prices exclude 7% VAT
- The software fee is annual or monthly depending on the plan chosen. It is not a one-time payment, unless you buy a perpetual licence
- Migrating from the old software depends on how much that software can export. Some export only reports, not raw data, in which case the opening balances have to be keyed in again
- STA does not guarantee what features the vendor's software will have in future. We can only confirm what actually works on the date we quote
Work steps
1. Requirements assessment
- We survey the document volume per month, the number of users, the number of warehouses and the sales channels
- We check how many companies there are and whether the accounts have to be consolidated
- We come back with a recommendation on which software and which plan, with the reasoning
2. Chart of accounts and tax settings
- We design the chart of accounts to match the business and to support financial statements to standard
- We set the input tax, output tax and withholding tax codes and map them to the chart of accounts
- We set the document formats and numbering so they follow a system
3. Importing the opening data
- Chart of accounts, customer register, supplier register and product register
- Opening balances: the balance of each account, receivables by customer, payables by supplier, and inventory
- We reconcile the imported data against the prior year financial statements before moving on
4. Parallel run
- Real transactions are recorded in parallel with the old system for at least one period
- We check that the input and output tax reports the new system produces match what was actually filed
- We correct any settings that are still wrong before the old system is retired
5. User training
- Training by role. Sales, purchasing, warehouse and accounting each get their own session
- We hand over a procedures manual written around your own chart of accounts, not the vendor's standard manual
6. Handover and ongoing support
- We answer usage questions for the period agreed
- We review the chart of accounts and the settings when the business changes, for example a new warehouse, a new company, or the start of online selling
Documents to be prepared for the company
What we ask you to have ready before the implementation starts
1. Company documents
- Copy of the company affidavit with the objectives
- Copy of Por Por 20, if the business is VAT registered
2. Opening accounting data
- The latest audited financial statements
- The trial balance as at the date you want to start on the new system
- Outstanding receivables by customer, and outstanding payables by supplier
- The inventory report with unit costs
- The chart of accounts currently in use, if any
3. Master data
- The customer register, with tax ID numbers and the addresses as they appear on tax invoices
- The supplier register, with tax ID numbers
- The product and service register, with units of measure and selling prices
- The list of users and the rights each of them should have
4. If you are migrating from another system
- The export file from the old software, in Excel or CSV
- Input and output tax reports for at least the last 3 months, to check accuracy after the migration
If section 2 is not yet complete we can still start, but only on the configuration. Opening balances cannot be imported yet.
Document receiving time
Estimated timing, counted from the day we have all the documents
- One company, no more than 100 transactions a month, no data migration - about 1 to 2 weeks
- One company, with stock and opening balances to migrate from the old software - about 3 to 6 weeks
- Several companies, or online sales channels to connect - assessed case by case
The best time to go live is the first day of a new accounting year, or at least the first day of a VAT period. Changing mid-period is possible, but you then have to reconcile two systems for that period, which adds work and adds room for error.
What causes delay most often is inventory that has not been counted, and outstanding receivables whose total does not agree with the financial statements. Clear those two before you start.
Frequently asked questions
1)
Q: Should we choose PEAK or Odoo?
A: Look at complexity, not at turnover. If you have one company, one warehouse, and the main work is issuing documents and closing the books, PEAK does the job and is much faster to start. If you have several companies whose accounts have to be consolidated, several warehouses, FIFO or FEFO costing, or you can see purchasing and manufacturing coming, Odoo is better value over time because you will not have to migrate again.
2)
Q: We are on Express or WinSpeed at the moment. Can we move?
A: You can, but it depends how well the old software exports. Some only export finished reports, not the raw data a new system can import. In that case we do not migrate the historical transactions. We bring the closing balances across as opening balances in the new system, and keep the old system for reading history over the 5 years the law requires you to retain records.
3)
Q: Do we have to use STA for bookkeeping as well?
A: No. We will do the implementation on its own, and your own accounting staff can run it afterwards. Clients who also use us for bookkeeping do have an advantage, because we see the data during the month and can flag an entry that is wrong straight away instead of finding it at year end.
4)
Q: What does the implementation cost?
A: It depends on the number of companies, the document volume, and whether there is existing data to migrate. We do not price on registered capital or revenue. Ask for a quote and the team will assess it after discussing the scope.
5)
Q: Are the software fee and the implementation fee separate?
A: Yes. The software fee is paid to the software vendor for the plan you choose. The implementation, training and data migration are paid to STA. We always separate them clearly in the quotation so you can see what each amount is for.
6)
Q: The accounting data sits in the cloud. How safe is it?
A: Both systems store data on the provider's cloud, allow per-user access rights, and keep a record of who changed what. What the business has to do itself is set rights to match each role, not make everyone an administrator, and turn on two-factor authentication for high-privilege users. We configure that part on the handover day.
7)
Q: If we stop using it, who owns the data?
A: The business does. It should be set out in the contract with the software provider from the start what format the data can be exported in when you leave, and the business must keep its documents and books for at least 5 years by law. We recommend exporting and keeping your own copy at least once a year.
Ask for more details