Seller Pao vs PEAK One System vs Two You Have to Connect
PEAK is a well-regarded Thai accounting system. But it's not an OMS. To manage marketplace orders, you'll need to add ZORT or another OMS and integrate them. Seller Pao combines OMS and Thai accounting in one price no hidden integration required.
PEAK Account is a leading Thai accounting platform designed for SMEs requiring precise financial records. However, PEAK does not manage orders, inventory, or marketplace connections Thai online stores must add ZORT or another OMS and integrate the two systems separately. Seller Pao consolidates everything into one platform.
Comparison data is based on public information reviewed in April 2026.
Feature Comparison
| Feature | Seller Pao | PEAK |
|---|---|---|
| Thai tax accounting (VAT, withholding tax) | Yes | Yes |
| Full tax invoices and receipts | Yes | Yes |
| Order management (OMS) | Yes | No |
| Marketplace integration (Shopee, Lazada, TikTok) | Yes | No |
| Multi-warehouse inventory management (WMS) | Yes | No |
| Unified chat (Facebook, LINE) | Yes | No |
| Starting price (per month) | Starts from ฿590 (everything included) | ฿799 (accounting only) |
| OMS required separately | Not required | Required + integration cost |
Key Differences
PEAK Is Excellent at Accounting But It Isn't an OMS
PEAK is trusted by Thai accountants and covers financial statements, tax compliance, and document generation thoroughly. But if you need to manage orders from Shopee, Lazada, or Facebook, you need to add ZORT or another OMS and pay to integrate the two. That adds both cost and complexity.
One System vs Two Systems to Maintain
Running PEAK + ZORT means maintaining two subscriptions, two sets of configurations, and a connection point between them. When the integration breaks, data between the two systems can fall out of sync. Seller Pao connects orders, inventory, and accounting from the core there is no connection point where data can go missing.
PEAK Is Better for Complex Accounting Requirements
If the business has complex accounting needs multiple legal entities, consolidation, or financial statements requiring a Certified Public Accountant sign-off under TFRS PEAK goes deeper on accounting than Seller Pao. Seller Pao is the best fit for E-commerce SMEs that want everything in one system.
FAQ Seller Pao vs PEAK
If I'm already using PEAK + ZORT, should I switch to Seller Pao?
It depends on accounting complexity. For a typical SME without advanced multi-entity requirements, Seller Pao reduces from two systems to one and lowers total monthly cost. If you need CPA-audited financial statements under TFRS, you may still need PEAK alongside Seller Pao.
Does Seller Pao's accounting comply with Thai standards?
Yes it covers Thai SME accounting requirements including VAT 7%, electronic tax invoices, withholding tax, P&L statements, and balance sheets. For large companies requiring full TFRS compliance, PEAK may be required in addition.
How does PEAK pricing compare to Seller Pao?
PEAK starts at ฿799/month for accounting only. Add ZORT at ฿799+/month for OMS, and the combined minimum is ฿1,598/month. Seller Pao Growth plan starts from ฿590/month with OMS and accounting both included.
Can accountants use Seller Pao?
Yes. Seller Pao has a dedicated accountant role with full access to the accounting module. Reports export in formats required by the Thai Revenue Department, with a clear audit trail for inspection.
Does Seller Pao handle VAT fully?
Yes VAT 7% on sale prices, full and abbreviated tax invoices, input and output tax tracking, and VAT reports aligned with Por Por 30 and Por Por 36 submission requirements.
Read next before choosing a system
Order Management System
See Seller Pao's main OMS page for stores that need to consolidate multi-channel orders in one system.
Inventory Management
See how real-time stock sync and automatic stock deduction work across Shopee, Lazada, TikTok, Facebook, and LINE.
Pricing Plans
Review Seller Pao plans for starter stores, growing teams, and higher-volume operations.