Resources · Tax & Compliance
Tax and Compliance Services Singapore.
Corporate income tax, ECI, GST, and the upcoming InvoiceNow shift — what small business owners in Singapore actually need to know, in plain language.
Tax doesn't have to be exciting. It has to be handled. Singapore's corporate tax framework, GST rules, and the rollout of InvoiceNow all have practical implications for how small businesses keep records and run their workflow — most of which don't make sense until someone explains them clearly.
This pillar covers the basics owners actually need: what gets filed when, what triggers GST registration, and what's changing as IRAS phases in GST InvoiceNow requirements for GST-registered businesses.
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27 January 2026 · 11 min
InvoiceNow and GST: what Singapore businesses should know
The pillar-length version of what InvoiceNow means for GST-registered Singapore businesses — the Peppol framework, the IRAS rollout schedule, the system changes required, and how to be ready by 1 April 2026 and beyond.
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20 October 2025 · 10 min
ECI filing Singapore: what business owners need to know
ECI is the most missed Singapore corporate tax filing. Due within 3 months of FYE, often skipped because owners don't know it applies to them. The threshold, the waiver, and how to file properly.
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6 October 2025 · 9 min
Tax compliance calendar for Singapore SMEs
The annual compliance rhythm a Singapore SME runs — when each filing lands, what triggers it, who owns it. A reading guide to the recurring deadlines, and the discipline that turns them into a non-event.
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3 May 2025 · 10 min
GST F5 filing: what small businesses need to prepare
The GST F5 return walked through in operator language — what to collect through the quarter, how to handle exceptions, the common mistakes that trigger IRAS queries, and how to make filing routine.
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30 March 2025 · 9 min
Form C-S vs Form C-S Lite vs Form C
Three corporate tax return forms, three eligibility tests. Which one your Singapore company files, what each one demands, and how to make sure you're using the right one for your year.
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18 November 2024 · 9 min
GST registration Singapore: when does your business need to register?
The S$1M threshold, the retrospective and prospective tests, voluntary registration trade-offs, and the InvoiceNow obligation that lands alongside it. The practical version.
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19 August 2024 · 10 min
Corporate income tax Singapore: a simple guide for small businesses
Singapore's corporate tax framework in plain language — the 17% headline, the SUTE and PTE exemptions that actually matter, ECI vs Form C-S vs Form C, and what most small operators get wrong.
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