GST Registration

GST done right,
before it snowballs.

GST is the one area where penalties don’t come alone — they stack. Late registration, late filing, late payment: miss one and the damage amplifies, quarter after quarter. We register you correctly, file on time, and keep you ahead of the rules.

Miss it and the damage compounds. Get it right and it’s simple.

GST registration

$1M
Compulsory threshold
9%
Current GST rate
3
Penalties that stack
5 yrs
Records you must keep
Registration becomes compulsory once taxable turnover crosses S$1M — but voluntary registration can pay off earlier if you carry heavy input GST. The right answer depends on your business.

One miss doesn’t cost you once.
It snowballs.

GST isn’t a one-time form. It’s an ongoing obligation with penalties that build on each other — and a digital shift coming that catches the unprepared. Here’s what actually matters.

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The penalties don’t come alone

Late registration, late filing and late payment are three separate penalties — and they stack. Miss the start and IRAS backdates you; miss the quarters and each one piles on the last. The longer it’s left, the bigger it grows. We keep you on time, every time.

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No software, no trail, no defence

GST-registered businesses must keep every record for at least 5 years — invoices, receipts, import permits — and IRAS can ask for any of it in an audit. Paper in a drawer is asking for trouble. Proper software like Xero or QuickBooks keeps it timestamped, traceable, retrievable — and gets you InvoiceNow-ready. If a claim is ever questioned, the evidence is right there.

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Input vs output tax — claim what’s yours

Output tax is the GST you charge; input tax is the GST you pay on purchases and imports — and what you can claim back. Get the classification wrong and you either over-pay or claim something you shouldn’t. An experienced hand on your books makes sure you claim every dollar you’re entitled to — and nothing you’re not.

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The rules are changing — we keep you ahead

InvoiceNow is making e-invoicing to IRAS mandatory, phasing in over the next few years. Still invoicing the old way? Your date may be sooner than you think. We track the changes that affect you and move you across before the deadline. Your business, our business.

Why a small miss becomes a big bill.

Most people think a missed GST obligation means one penalty. It rarely does. The three penalties layer on top of each other — and the clock keeps running.

PENALTY 1

Late registration

Cross the threshold and register late, and IRAS backdates your registration to when you should have registered — you owe the GST you never collected from your customers.

PENALTY 2

Late filing

Every GST return is quarterly. Miss a filing and a penalty applies — and it keeps building each quarter you’re late, stacking on what came before.

PENALTY 3

Late payment

On top of filing, the tax owed attracts a late-payment penalty that grows the longer it sits unpaid. Three clocks, all running at once.

We’ve seen a business get hit with a heavy backdated bill for missing the threshold — entirely avoidable with someone watching the numbers. That someone is us.

InvoiceNow is becoming mandatory.

IRAS is phasing in InvoiceNow — sending your invoice data digitally via the national e-invoicing network. It’s already live for new voluntary registrants, and rolls out to everyone else by size. Here’s the schedule.

1 Apr 2026 Now
All new voluntary GST registrants — regardless of incorporation date or business structure.
1 Apr 2028
All new compulsory registrants, plus existing GST-registered businesses with total annual supplies ≤ S$200,000.
1 Apr 2029
Existing GST-registered businesses with total annual supplies ≤ S$1,000,000.
1 Apr 2030
Existing GST-registered businesses with total annual supplies ≤ S$4,000,000.
1 Apr 2031
Existing GST-registered businesses with total annual supplies > S$4,000,000.

IRAS will notify businesses registered before 2026 of their exact implementation date by mid-2026, and government funding is available to help SMEs onboard. The safe move is to get on InvoiceNow-ready software early — not scramble at the deadline.

What we handle

GST from registration to filing — assessed for your business, not just your turnover.

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GST Registration

We assess whether you must register, or whether voluntary registration benefits you — then handle the application end to end.

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Turnover Monitoring

We watch your taxable turnover and flag the S$1M threshold before you cross it — no nasty backdated surprises.

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Quarterly GST Filing

Your F5 returns prepared and filed on time, every quarter — input and output tax classified correctly.

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InvoiceNow Onboarding

We get you onto InvoiceNow-ready software ahead of your mandatory date, so the digital shift is a non-event.

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Records & Audit Trail

Proper 5-year record-keeping in cloud software — timestamped, traceable and ready if IRAS ever asks.

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Ongoing Advisory

A direct WhatsApp line for GST questions, plus updates whenever the rules change. Compliance, the modern way.

Let’s talk

GST is simple — until it isn’t.

The threshold, the three penalties, input vs output tax, the InvoiceNow shift, five years of records — it’s a lot to track, and the cost of getting it wrong compounds.

We don’t just file your GST. We watch the numbers, keep you ahead of the rules, and help you anchor the direction of your business as it grows.

Your business, our business.
Book a call on WhatsApp

Frequently asked questions

Registration is compulsory once your taxable turnover exceeds S$1M, or you reasonably expect it to in the next 12 months. Miss the window and IRAS can backdate your registration — you’d owe GST you never collected. Below $1M, voluntary registration is possible and can be worthwhile if you carry significant input GST.

It depends on your business. If you import goods or carry heavy GST on purchases, registering lets you claim that input tax back instead of absorbing it as a cost. But voluntary registration comes with obligations — you generally must stay registered at least two years and file quarterly. We assess whether it’s a net win for you before you commit.

InvoiceNow is Singapore’s national e-invoicing network. IRAS is making it mandatory for GST-registered businesses to transmit invoice data digitally — already required for new voluntary registrants from April 2026, and phasing in for everyone else between 2028 and 2031 by business size. If you’re still invoicing manually, you’ll need to move to InvoiceNow-ready software. We handle that move for you.

Output tax is the GST you charge your customers. Input tax is the GST you pay on your own purchases and imports, which you can generally claim back once registered — provided it’s properly documented and business-related. Correct classification is where an experienced accountant earns their keep.

At least 5 years — invoices, receipts, import permits and accounting records — even if your business has stopped or deregistered. Keeping it all in cloud software means it’s organised, timestamped and instantly retrievable if IRAS ever conducts an audit.

You can face penalties on three fronts — late registration (backdated), late filing (which builds each quarter), and late payment on the tax owed. Because they stack, a small slip can grow into a significant bill. That’s exactly why we track your obligations and file ahead of every deadline.