Accurate, On-Time GST Return Filing in Singapore

Sleek's local team preps, reviews, and submits your GST F5 every quarter, on time, without you chasing it.

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THE COST OF MISSING A FILING

S$200

Per month, per missed return

S$100

One quarter of Sleek GST filing

Full review + IRAS submission included

Do you need to file a GST return?

Your turnover crossed S$1M

If your taxable turnover exceeded S$1 million in the past 12 months, or you expect it to in the next 12, IRAS requires you to file returns. The question is whether you're filing correctly and on time.

You registered early by choice

Registered voluntarily to claim input tax credits? You still need to file every period, even if revenue is below the S$1M threshold. Skipping a filing because you think it doesn't apply is one of the most common mistakes we see.

You're getting close to S$1M

If you deal in imports, exports, or taxable goods and your turnover is approaching S$1 million, GST registration and filing may already apply. Getting ahead of it avoids backdated penalties from IRAS.

Had no transactions this quarter? You still need to file.

IRAS treats a missing return the same as a late return, even if you owe nothing. The penalty is S$200 per month, up to S$10,000. A nil return takes minutes to prepare. Missing one can cost thousands.

Nil returns are mandatory. Missing one carries the same S$200/month penalty as any other missed return.

What does GST filing with Sleek cost?

One late filing penalty from IRAS costs S$200. One quarter of Sleek filing costs S$300. The maths is simple.

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GST Registration

Quick, compliant registration to get your business GST-ready without the paperwork hassle

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One-time fee

SG$400

No recurring charges. Just one flat rate for full registration support.

Sit back, we handle:

Eligibility check before payment

Preparation of IRAS application documents

Full submission and follow-up with IRAS

Guided support from our local team

Refund if not eligible

GST Filing & Compliance

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Reliable quarterly filing to keep your business IRAS-compliant and penalty free

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From

SG$100/mo

Billed quarterly at S$300 or annually at S$1200

All part of the package:

Quarterly GST return filing

Input and output tax review for accuracy

IRAS submission with compliance checks

Ongoing support, reminders, and updates

Add-onif not using Sleek accounting

Not sure when your next return is due?

We'll confirm your cycle and filing date in a free call.

What Singapore business owners say about Sleek

96.8% CSAT score across 8,000+ businesses in Singapore

“Sleek is an absolute breeze to work with. Their advice has always been spot on, and they by far have the most competitive rates on the market.”

– Sheila Karpe | Founder, Unearth Balance

“I started using Sleek for my new startup. The immigration and secretarial services I received are excellent. They acted in a timely manner with professional advice.”

– Ficoal Tung | Founder, AsiaVerify

“Sleek handled our Employment Pass applications when we were setting up in Singapore. The team knew exactly what MOM needed — we had approvals within 3 weeks.”

– Torina Tan | Director, G Herbal Pte. Ltd.

How Sleek's GST filing works

01 — Every return is reviewed before it reaches IRAS

Your GST F5 isn’t auto-generated and submitted. Our team reviews your input tax, output tax, and supporting records line by line before filing. If something doesn’t add up, we flag it and fix it before IRAS sees it.

02 — You could file yourself. Here’s why businesses stop.

One misclassified input tax claim, one missed nil return, one late submission and the penalties start. Sleek costs less per quarter than a single late filing fine.

03 — We track your deadlines so you never have to

Whether monthly or quarterly, we know your next filing date, prep your return ahead of it, and submit before the deadline. Every time. Including nil returns.

04 — Switching? We handle the messy part.

We collect past filings from your previous provider, set up CorpPass access, confirm your next deadline, and file your first return. Most handovers done within a week.

05 — Singapore-based team. Fully digital process.

Our GST specialists are based in Singapore and work within IRAS-aligned processes. Everything from onboarding to filing happens online. One dedicated point of contact.

Filing GST Yourself vs. Using Sleek

IRAS myTax Portal lets you file directly. But most business owners who try it once realise the risk isn’t worth the savings. One misclassified input tax claim, one missed nil return, one late submission — and the penalties start.


What matters	Use Sleek	File it yourself
Cost per quarter	S$300	Free (if no errors)
Time per quarter	0 hours	2–4 hours
Error risk	Reviewed before IRAS sees it	You catch your own mistakes
Nil returns	Filed automatically	Easy to forget
Penalty risk	We track and file before the deadline	S$200/month if late

Already filing GST with us? Your accounting is halfway done.

If you’re on Sleek’s GST filing service, we already have your transaction records, your IRAS cycle, and your tax history. Adding accounting means we handle your bookkeeping, annual financial statements, and corporate tax filing, too. GST returns come included at no extra cost.

GST filing deadlines in Singapore

GST-registered businesses must submit their GST F5 return to IRAS by the last day of the month following the end of their accounting period. Late submissions incur a penalty of S$200 per month, up to a maximum of S$10,000.

Accounting Quarter	Quarter Ends	GST Return Due By
Company name	31 March	30 April
At least one shareholder	30 June	31 July
At least one locally resident director	30 September	31 October
Registered office address	31 December	31 January (following year)

Great news, your company name is available! Now simply pick a plan below to get started

Your next GST deadline isn't waiting. Neither should you.

Frequently asked questions about GST filing in Singapore

What is a GST return in Singapore?

A GST return is a periodic statement every GST-registered business must submit to IRAS. It reports the GST you collected from customers (output tax), the GST you paid on business purchases (input tax), and your total taxable sales and purchases. The standard form is the GST F5.

How Sleek helps: Our team reviews your input and output tax records and prepares your GST F5 before submission, so errors are caught before IRAS sees them.

When do I need to file GST returns in Singapore?

If your business is GST-registered, compulsorily or voluntarily, you must file based on your assigned cycle. Most businesses file quarterly, some monthly. Filing is mandatory every period, even with no transactions. Late or missed filings result in penalties starting at S$200 per month.

How Sleek helps: We confirm your filing cycle, track your deadlines, and submit your return before the due date every period.

Do I need to file a GST return if I had no sales?

Yes. Even with zero sales and zero GST collected, you must submit a nil return. IRAS treats a missing nil return the same as a late return. The penalty is S$200 per month, up to S$10,000.

How Sleek helps: We file nil returns on schedule as part of your regular filing service, so you never miss one by accident.

What happens if I miss a GST filing deadline?

IRAS imposes a late filing penalty of S$200 per missed return, charged monthly as long as the return is outstanding. Continued non-compliance can lead to an Estimated NOA, audits, additional fines, or prosecution.

How Sleek helps: We prepare your return early each cycle and submit it before the deadline. If you’re already behind, we can help you get current and avoid further penalties.

How do I know if my GST cycle is monthly or quarterly?

Your filing cycle is assigned by IRAS at registration. Most businesses are on a quarterly cycle. Some with higher transaction volumes may be assigned monthly. You can check by logging into the IRAS myTax Portal through CorpPass.

How Sleek helps: We confirm your filing cycle as part of onboarding and align your returns to your accounting periods.

Can I use Sleek for GST filing without switching my accountant?

Yes. Sleek offers GST return filing as a standalone service. We can work alongside your existing accountant — we prepare, review, and submit your GST F5 to IRAS on your behalf.

How Sleek helps: We handle just the GST filing portion. No overlap, no conflict with your existing accountant.

I just got GST-registered. When do I start filing?

You must begin filing from the effective date on your GST registration approval letter. Your first return could be due as early as the following month or quarter.

How Sleek helps: We track your filing start date from the moment you onboard and ensure your first return is submitted on time.

What if I make a mistake in my GST return?

If your errors meet IRAS’s administrative concession thresholds (≤ S$3,000 net GST error and ≤ 5% of total supplies), you may adjust them in your next GST F5. Otherwise, file a GST F7.

How Sleek helps: We review every return for errors before submission. If a correction is needed, we assess VDP eligibility and handle the F7 filing for you.

How do I switch GST filing providers in Singapore?

Switching is straightforward: notify your current provider, grant CorpPass access to Sleek via IRAS myTax Portal, transfer past GST records, and confirm next filing deadlines.

How Sleek helps: We handle the full transition: document collection, CorpPass setup, deadline confirmation, and your first return. Most handovers are done within a week.

Need more information?

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Oswyn,
Sleek Advisor