Compare Invoicing Rules

Thailand vs Singapore

Everything you need to know about issuing professional invoices in Thailand and Singapore. Compare tax rules, currencies, and local requirements.

Key Invoicing Differences

Compare local requirements to stay compliant in both regions.

Feature
🇹🇭 Thailand
🇸🇬 Singapore
Currency
THB
SGD
Tax System
VAT — 7%
GST (Goods & Services Tax)
Free Tool
Yes, 100% Free
Yes, 100% Free
Registration
Not Required
Not Required

Local Invoicing Insights

🇹🇭

Thailand Tips

    🇸🇬

    Singapore Tips

      Frequently Asked Questions

      Common questions about invoicing in Thailand and Singapore.

      Yes, 100% free. Create professional THB invoices without any subscription.

      Yes. Add the standard 7% VAT rate. Tax calculates automatically on the total.

      Include: business name and address, client details, your Tax ID, invoice number, date, itemized services, amount excluding VAT, VAT amount, total including VAT, and payment terms.

      Yes. Add your Thai Tax ID in your business details.

      Yes, 100% free. Create, customize, and download professional SGD invoices without any subscription or hidden fees.

      Yes. You can add the standard Singapore GST rate (9%) which automatically calculates on the invoice total, or set it to 0% for zero-rated or exempt supplies.

      A Singapore invoice must include: your business name, address, and UEN, client name/address, invoice date, unique invoice number, details of goods/services, GST registration number (if registered), GST rate, total tax amount, and payment due date.

      Yes. Use the Notes or Terms field to include your PayNow UEN, Mobile Number, or specific instructions for your Singapore client to pay via PayNow.

      Create Invoices for Thailand or Singapore

      Join businesses globally using InvoicesNest.

      Reviewed by InvoicesNest Accounting Team • Updated: July 2026
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