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Singapore Tax Information

9% GST

GST is 9% (2024). Registration mandatory above S$1 million turnover. UEN required.

Architect Services to Invoice

  • Schematic design
  • Design development
  • Construction documents
  • Permit drawings
  • Site planning
  • Interior architecture
  • Project management

Invoice Requirements in Singapore

GST registration number
UEN
Business address
Client details
GST amount
Total in SGD

Payment Terms

Phase-based billing. Percentage at each milestone. Retainer for ongoing projects.

ImmediateNet 14Net 30Net 60

Payment Methods in Singapore

Bank TransferPayNowGIROCredit CardPayPal

Architect Invoice Tips

  • Reference project phases
  • Include deliverables per phase
  • Note reimbursable expenses
  • Document design changes
  • Track percentage complete

Frequently Asked Questions

What tax rate applies to architect invoices in Singapore?

Singapore has 9% GST. GST is 9% (2024). Registration mandatory above S$1 million turnover. UEN required.

What payment methods are common for architects in Singapore?

Common payment methods in Singapore include: Bank Transfer, PayNow, GIRO, Credit Card, PayPal. Phase-based billing. Percentage at each milestone. Retainer for ongoing projects.

What should architect invoices include in Singapore?

Your invoice should include: GST registration number, UEN, Business address, Client details. For architect services specifically, also include: Schematic design, Design development, Construction documents.

How should architects bill for projects?

Percentage of construction cost, fixed fee by phase, or hourly. Phase-based is standard.

What about design changes?

Include scope of changes and bill as additional services beyond original scope.

When is GST registration required?

Mandatory if taxable turnover exceeds S$1 million in 12 months.