Singapore GST registration threshold calculator
Estimate Singapore GST exposure at the SGD 1 million threshold, with a separate check for overseas vendor registration on digital services.
Threshold
1,000,000 SGD
Calendar-year taxable turnover
Standard rate
9% GST
Planning default
Registration window
30 days
After the trigger
Zero-latency estimate
Your GST position
Runs entirely in your browser. Adjust revenue, order size and payout model — no income data leaves this page.
≈ 144 orders / year
Payment & tax architecture
You collect tax, remit it and keep the platform fee lower — but you own every registration and filing.
9% GST · planning default, not a quote.
Threshold radar
60.0%
of the registration threshold
Headroom
$400,000
Registration window
30 days
Runway at run-rate
8.0 months
You still have headroom. Re-check the threshold monthly and keep customer-location evidence for every sale.
Annual tax
$54,000
9.0% planning rate on $600,000
FX friction
$14,011
2.2% FX drag + $811 compliance
Net take-home
$528,989
Self-Managed · 88.2% margin
Payout architecture comparison
Difference
+$27,811
Merchant of Record keeps more at this revenue level
Merchant of Record fee assumption: 5% of gross. Tax collection and remittance are handled by the provider; the tax liability card shows what you would owe under the self-managed model. FX friction uses a fixed 2.2% planning assumption.
Runway assumes a flat monthly run-rate. Seasonal spikes, refunds and marketplace-facilitator sales can move the real registration date.
Official Compliance Note
Neutral · no adsRegistration is a deadline-driven process, not a one-click switch. Confirm the current registration window, effective date and any local representative requirement before you file.
This slot is intentionally neutral. No paid placement is active. Set affiliates.enabled to true in site.config.json to activate reviewed partner cards.
Cross-market view
How $600,000 per year compares
Same annual revenue, converted at the site FX baseline
Planning estimates, not tax advice. Threshold $1,000,000. FX baseline: 2026-11-01.
How we calculate →The rule, unpacked
What the GST threshold actually measures
Register for GST if taxable turnover exceeds SGD 1 million at the end of the calendar year, or is expected to exceed SGD 1 million in the next 12 months.
Measurement basis
Calendar-year taxable turnover
The backward-looking test uses the calendar year.
Registration timing
30-day window
Confirm the effective date and any local agent requirements with Inland Revenue Authority of Singapore.
Who must register
Businesses with taxable turnover above SGD 1 million at the end of the calendar year or expected to exceed it in the next 12 months.
Exceptions & edge cases
Overseas vendors may need to register under the OVR regime even below SGD 1 million. Exempt supplies are excluded from taxable turnover.
Conditions to check
- The backward-looking test uses the calendar year.
- The forward-looking test uses the next 12 months.
- Overseas vendors may need to register under the OVR regime regardless of the SGD 1 million threshold.
Rate context
The calculator uses a planning rate, not every rate
Zero-rated and exempt supplies exist; the calculator uses the standard rate.
The estimate is useful for sizing exposure, not for preparing a return. Product-specific rates, exemptions, reverse-charge rules and place-of-supply tests can change the amount you actually owe.
Source-backed answers
Singapore GST: common questions
Answers are tied to the linked official source and the conditions shown above.
01 What counts toward the GST threshold in Singapore?
Taxable turnover includes standard-rated and zero-rated supplies, but excludes exempt supplies. The backward test uses the calendar year.
02 When does GST registration take effect?
Register within 30 days after the end of the calendar year in which the threshold is exceeded, or earlier if the forward test applies.
03 Does selling digital services change the GST threshold?
Overseas vendors supplying digital services to Singapore consumers may need to register under the OVR regime, which is separate from the domestic SGD 1 million threshold.
04 Is this Singapore tax calculator official tax advice?
No. It is a planning estimate based on the published threshold and rate linked on this page. Your products, customer location, marketplace sales and business structure can change the outcome. Confirm the current rule with the official source or a local adviser before registering, pricing or filing.
General information only — confirm the current rule with the official source.
Report a correctionVerify it yourself
Official sources
- Primary
Do I need to register for GST?
Inland Revenue Authority of Singapore · checked 10 Nov 2026
- Secondary
GST basics
IRAS · checked 10 Nov 2026
Found a change? Email corrections@bordertax.example.com with the source URL and the amount you believe is correct. Corrections are logged in the public changelog.