Services · Tax

Form C-S and Form C filed right and filed early.

Every Singapore company files a corporate tax return by 30 November. We prepare the right form with the right attachments and lodge it well before the deadline, with ECI handled months earlier.

What we handle

  • ECI computation and filing within 3 months of year end
  • Form C-S C-S Lite or Form C determination
  • Return preparation and myTax Portal lodgement
  • Financial statements and computation attachments for Form C
  • Notice of assessment review and objection filing
  • GIRO instalment arrangements

Which form your company files

Form C-S applies to companies incorporated in Singapore with revenue up to S$5 million, only Singapore-sourced income taxed at the prevailing rate, and none of the disqualifying claims such as group relief or foreign tax credit. C-S Lite trims the fields further for revenue up to S$200,000. Everyone else files Form C with financial statements and the detailed computation attached. Filing the wrong form or missing an attachment reopens the return later, so we determine eligibility fresh each year.

Not sure where to start?

Tell us where your books stand. An expert accountant replies within one working day.

Common questions

By 30 November each year for the preceding year of assessment, filed electronically. We lodge well ahead so nothing rides on portal traffic in the final week.

IRAS imposes penalties and can raise an estimated assessment which you then must displace. Persistent non-filing escalates to summonses. A maintained calendar makes this academic.

Yes, through an objection or amendment within prescribed timelines. We prepare the revised computation and manage the correspondence.

Estimated Chargeable Income is an early estimate of your taxable profit filed within 3 months of year end unless waived. Filing early starts instalment plans earlier, which spreads the cash impact.

An objection must be filed within 2 months of the notice. We review the assessment, quantify the difference and lodge the objection with grounds.

Never watch a deadline again

Our calendar carries the 30 November weight so yours does not.