Monthly Accounting
& Tax with PEAK

Each month, we typically need your sales invoices, purchase receipts, expense receipts, bank statements, and payroll records. When you first start with us, we provide a simple checklist tailored to your business type so you know exactly what to gather and how to organize it. Most clients share documents digitally — you can send photos via LINE, attach files via email, or share a Google Drive folder. For restaurants and retail businesses, we may also need daily sales summaries or POS reports. For companies with foreign suppliers, we need copies of invoices and payment records for PP.36 filing. The important thing is timely submission — we send reminders before the cutoff each month so you never miss a deadline.

PEAK is a Thai-developed cloud accounting platform widely used by accounting firms and businesses across Thailand. Once we enter your income, expenses, and journal entries into PEAK, you can log in from any device — computer, tablet, or phone — at any time to view your current financial position. You can see live income and expense summaries, outstanding invoices, profit and loss snapshots, and cash flow data without waiting for a monthly report. PEAK also integrates with Thailand's Revenue Department e-filing system, which means some tax submissions can be processed directly through the platform. Access is controlled, so you see only what is relevant to your business.

We send reminders before each monthly deadline so missed submissions are rare. However, if documents arrive later than expected, we will still do everything possible to file on time. The key deadlines in Thailand are generally the 7th or 15th of each month for various forms. If documents arrive too late to meet the legal deadline, we will notify you immediately, explain exactly which forms are affected and the applicable late penalties, and file as soon as the documents are ready to minimize further surcharges. Late VAT or withholding tax submissions incur a 1.5% per month surcharge plus a fixed fine.

Yes. PTNP Accounting handles payroll for both Thai and foreign employees. For foreign employees, additional considerations include work permit compliance ratios — Thai law generally requires a minimum of four Thai employees for each foreign employee holding a work permit. We calculate and withhold income tax under PND.1 for all staff, including foreign nationals whose Thai-sourced income is subject to Thai personal income tax at progressive rates from zero to thirty-five percent. We also manage social security contributions for Thai employees and advise on whether foreign employees should enroll.

After each monthly filing cycle, we provide you with a complete filing summary — a record of every form submitted, the date it was filed, the amounts declared, and the payment receipts or confirmation numbers from the Revenue Department and Social Security Office. We also send you copies of all submitted forms so you have a full archive for your records. If you use PEAK, the relevant entries will also be visible in your dashboard. Our team double-checks all calculations and form data before submission, and our senior accountants review VAT returns and withholding tax forms for accuracy.