Do you need to register for GST?

Answer 4 quick questions to find out if your Singapore business must register for GST — or whether voluntary registration makes sense. Then track your monthly revenue against the S$1M threshold.

🕐 Takes 2 minutes 📊 Live threshold tracker ⚡ Instant result 🔒 No sign-up required
Eligibility Checker

Check your GST registration status

Answer a few questions to get your personalised GST registration guidance.

Step 1 of 4

What is your estimated or actual annual revenue?

Include all taxable supplies made in Singapore in the last 12 months, or your projected figure for new businesses.

Is your revenue expected to exceed S$1M in the next 12 months?

Think about signed contracts, confirmed orders, or a realistic growth trajectory for your business.

What is your business type?

This helps determine whether voluntary registration is likely to benefit you.

Are you selling to other GST-registered businesses (B2B)?

If your customers are GST-registered, they can claim back any GST you charge — making voluntary registration more attractive.

Need help with GST registration? We handle it end-to-end →
Also track your revenue in real time
Threshold Tracker

Revenue vs S$1M GST threshold

Enter your monthly revenue figures to see where you stand. Updates live as you type.

Total revenue so far S$0
Remaining to S$1M S$1,000,000
Projected annual —
S$0 0% S$1M threshold
Singapore GST essentials

How GST registration works

Mandatory at S$1M

You must register for GST within 30 days of your taxable turnover exceeding S$1M in a 12-month period. Late registration attracts penalties from IRAS.

Voluntary registration

Businesses below S$1M can voluntarily register, especially if they have significant input tax to reclaim. You must maintain registration for at least 2 years.

Quarterly GST filing

Once registered, you must file GST returns (GST F5) quarterly with IRAS. Failure to file on time results in a 5% late payment penalty plus enforcement action.

Exempt supplies

Certain supplies — including most financial services and residential property — are exempt from GST. Businesses dealing primarily in exempt supplies typically cannot claim back input tax.

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Tax Calculator

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Document Checklist

Know exactly which documents you need before you start.

Embed this tool on your website

Free to use. Add the GST Registration Checker to your accounting blog, startup guide, or business portal.

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No attribution required. Reflects current IRAS GST thresholds and rules.