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IRAS Tax Assistant

Singapore tax, in plain language

Singapore tax,
answered.

Ask about GST, income tax, corporate tax, or SRS. Anything personal is routed to a human advisor.

General information only, not personalised tax advice.

A multi-step tax agent: every reply shows the routed model, tokens, and cost, plus a step trace when tools ran.

  1. Click the GST chip (or ask about the GST registration threshold). The reply cites SGD 1,000,000 and the badge under it reads "Routed to GPT-4o mini" with tokens and cost.
  2. Click Multi-step: the agent chains lookup_tax_info then calculate_tax_estimate in one turn. Expand "Agent steps (2)" in the reply to see each tool's input and output.
  3. Click SRS: personalised questions route to Claude Sonnet 4.6 and escalate to the advisor queue with a case number.
  4. Click PII: a question containing an NRIC routes to Claude Haiku 4.5 under the pii-sensitive rule.
  5. Use New chat to start over; past conversations stay in the history sidebar (this browser only).