Singapore corporate tax · YA 2026

Company tax filing,
made clear.

Not sure whether to file Form C-S (Lite), Form C-S or Form C? Answer a few simple questions and get a personalised action plan. No registration. No documents. No cost.

✓ Free 2-minute check✓ Plain-English results✓ Based on IRAS guidance
Your company tax action plan
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GUIDANCE ONLY · PROVISIONAL

Your company's tax action plan

Year of assessment—
Potential filing route—
Ordinary deadline—

What to do next

    Official references: IRAS filing season · IRAS form conditions
    Why TaxCheck

    One clear next step. No tax jargon.

    01 / UNDERSTAND

    Find your likely form

    We separate estimated tax (ECI), corporate income tax and ACRA annual returns, so you know which process you are dealing with.

    02 / PREPARE

    Know what to gather

    A checklist reflects your filing route and whether your company's financial accounts are ready.

    03 / ACT

    Choose your next move

    Follow the official IRAS guidance independently, or ask our Singapore SME team for help through WhatsApp.

    Frequently asked questions

    Singapore company tax, explained simply.

    My company made a loss. Do I still need to file?

    Generally, an active company must still file its annual corporate tax return even if it made a loss. Special circumstances and IRAS filing waivers require checking.

    Is ECI the same as Form C-S?

    No. ECI reports an estimate after a financial year ends, while Form C-S (Lite), C-S or C reports actual income for an annual corporate tax return.

    Does revenue below S$200,000 automatically qualify for Lite?

    No. A company also needs to meet all Form C-S eligibility requirements. This checker highlights likely pathways but cannot verify claims or accounting records.

    Does this tool calculate or submit my tax return?

    No. TaxCheck is a free filing guidance and readiness navigator, not an IRAS filing portal or a substitute for a reviewed tax computation.

    Do I have to share financial documents?

    No. TaxCheck does not request files, UENs, passwords or company financial statements. If you choose to contact Eorenda, send sensitive documents only through a separately agreed secure channel.

    Eorenda · Singapore SME accounting & compliance

    Still unsure what to file?

    A clear question deserves a clear answer. Tell our team what you're trying to complete. We can explain the next step and discuss whether professional assistance is appropriate.

    TaxCheck is independent of IRAS. Results are general guidance based on your answers, not a tax opinion, filing confirmation or professional engagement. Filing obligations, return eligibility and deadlines require verification. Go to IRAS.

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