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Taxation

Do you know your tax deadlines?

Three dates decide your whole tax year — and one of them is different for every company. Most directors can't say them. Tap to check yours.

Personal18 AprYour own income tax, e-filed. Same date every year.
ECI3 monthsafter your company's year-end — the one date that's different for every company
Corporate30 NovForm C-S / C — the return itself. Always the year after your year-end.
Tap your year-end
Year
We track all three for every client. You'll hear from us before each one — not after.
Not sure which of these applies to you — or whether you've already missed one?

That's a two-minute WhatsApp, not a research project. Send us your year-end and we'll tell you exactly where you stand.

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The question we hear most

"How come my tax so high?" Usually, it's the accounts.

Tax isn't a number IRAS invents. It's worked out from your accounts, line by line — so if the accounts are wrong, the tax is wrong, and nobody writes to tell you. Tap to see a sample computation, and the six places we look first.

Tax computation

Sample company · FYE 31 Dec · S$
Reviewed by Morphrix
Starting point
Profit before tax (per accounts)186,400
Our noteBefore we compute anything, we ask whether this line is right. Is every real cost in here? Is anything in here that isn't a cost? Most "high tax" starts on this line, not on the tax form.
Add back — not deductible
Depreciation9,400
S-plate car & non-business expenses4,850
Our noteThe S-plate car is the classic: private car expenses are never deductible in Singapore, however much you drive for work. Same for the holiday and the family dinner. If they stay in, IRAS finds them before we do — better we take them out now, calmly.
Director's fees — not yet approved36,000
Our noteDirector's fees are only deductible once they're approved in a general meeting. No resolution, no deduction. This is why your corp sec and your tax should be one conversation.
Fines & penalties800
Adjusted profit237,450
Less
Capital allowances(18,200)
Our noteThe laptops, the renovation, the machinery — they earn allowances, but only if someone claims them. Unclaimed allowances are the quietest overpayment there is.
Costs paid personally, never claimed
Our notePaid from your own pocket, never claimed back from the company, so never recorded and never deducted. If you spent it for the business, it belongs in the books. We ask.
Chargeable income, before exemptions219,250
Exemptions & rebates for this yearchecked, not assumed
Our noteThe start-up and partial exemptions, and whatever this year's Budget gave — we check which ones this company qualifies for, this year, rather than assume. The rules move. We read them every year so you don't have to.
Tax at 17% on what's leftthen we sit down
Read it againThe accounts said 186,400. IRAS taxes 219,250 — because everything that isn't deductible goes back in before the rate is applied. Tax isn't charged on the profit you see; it's charged on the profit after IRAS's adjustments. That gap is where "how come my tax so high" comes from — and it starts in the accounts, months before anyone files.
Sample figures for illustration only. Every company's computation is different — that's the point.
Our noteBefore we compute anything, we ask whether this line is right. Is every real cost in here? Is anything in here that isn't a cost? Most "high tax" starts on this line, not on the tax form.
Our noteThe S-plate car is the classic: private car expenses are never deductible in Singapore, however much you drive for work. Same for the holiday and the family dinner. If they stay in, IRAS finds them before we do — better we take them out now, calmly.
Our noteDirector's fees are only deductible once they're approved in a general meeting. No resolution, no deduction. This is why your corp sec and your tax should be one conversation.
Our noteThe laptops, the renovation, the machinery — they earn allowances, but only if someone claims them. Unclaimed allowances are the quietest overpayment there is.
Our notePaid from your own pocket, never claimed back from the company, so never recorded and never deducted. If you spent it for the business, it belongs in the books. We ask.
Our noteThe start-up and partial exemptions, and whatever this year's Budget gave — we check which ones this company qualifies for, this year, rather than assume. The rules move. We read them every year so you don't have to.
Want us to look at your computation the same way?

Send us last year's accounts or tax computation. We'll tell you which of these six lines applies to you — before IRAS does.

CHECK MY TAX ON WHATSAPP →
The filing most directors don't understand

ECI. Same tax, paid two ways.

Estimated Chargeable Income is your company's estimate of its own taxable profit, filed within three months of year-end. Most directors treat it as a chore. It's actually the filing that decides how the tax hits your cash flow.

File early, on GIROthe tax is spread
S$12,000your real tax, in monthly pieces of about S$1,200

Say your tax works out to S$12,000. File ECI on time and pay by GIRO, and IRAS lets you settle it in interest-free monthly instalments — roughly S$1,200 a month instead of S$12,000 at once. The earlier in the window you file, the more months you get.

Miss itIRAS estimates for you
S$20,000?IRAS's own estimate, due in one lump within a month

Same company, same year. Skip ECI and IRAS raises its own estimate from your past income — often higher than your real profit, say S$20,000. That full amount is due within a month, no instalments. You can object and get it corrected later, but the cash has already left. More tax, sooner, all at once.

Sample figures for illustration only. Instalment terms are set by IRAS and depend on when you file.

We file ECI on time for every client. GIRO set up ahead of it, not after.

The dates are ours to remember. Your job is to run the business.

TALK TO US ABOUT YOUR TAX →
Personal tax

The right reliefs. Not every relief.

Directors, owners and employees all file by 18 April. The form lets you claim a lot. Claiming what doesn't apply to you causes problems later — and your personal filing should tell the same story as the company's.

LineDoing it yourselfMorphrix
ReliefsTick everything the form allows.Only the ones that genuinely apply. The wrong relief isn't a saving — it's a query from IRAS with your name on it.
Director's paySalary or fees — whatever came out of the account.Decided with the company's tax in mind. How you're paid changes what the company deducts and what you declare. One decision, two returns.
TimingRemember in April. Scramble.Planned with the company's year. By the time April comes, the numbers already exist — we're just filing them.
A letter from IRASPanic. Google. Reply late.Forward it to us. Queries, objections and correspondence are ours to handle — that's part of the job, not an extra.
Not sure which reliefs are actually yours?

Tell us how you're paid — salary, fees, or both — and we'll file the personal return to match the company's. One story, two returns.

ASK ABOUT PERSONAL TAX →
What's included

From the accounts underneath to the final filing.

Corporate Tax Filing

ECI within three months of year-end, then Form C-S / C-S (Lite) / C by 30 November — prepared from accounts we've actually read.

Personal Income Tax

Filing for directors, owners and employees by 18 April — with the reliefs that apply to you, and none that don't.

Tax Planning

Before year-end, not after. A sit-down on this year's profit, this year's exemptions and what's worth timing — in plain language.

Withholding Tax

Payments to non-residents — Section 45 compliance, treaty considerations, filed before the money leaves.

Structure Advisory

Company and shareholding structure reviewed with tax in mind — set up well once, rather than paying for a careless setup for years.

IRAS Correspondence

Queries, objections, letters — forward them to us. We answer IRAS on your behalf, on time.

Let's talk

The tax bill is the last step. It's decided long before.

By the time you file, your tax is mostly already set — by how the accounts were kept, what was claimed, and what was planned. That's where we work: at the root, not at the deadline.

We don't just file your return. We read the numbers underneath it, and we talk to you before the year closes.

Your business, our business.
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Frequently asked questions

Tax, answered.

ECI (Estimated Chargeable Income) is your company's own estimate of its taxable profit for the year. It's due within three months of your financial year-end. File it on time while on GIRO and IRAS lets you pay in interest-free monthly instalments — the earlier you file, the more months you get.

IRAS can raise an estimated assessment based on your past income — often higher than your actual profit. You'd then need to pay that full amount within a month, with no instalment option, and file an objection separately if you disagree. Filing on time avoids all of that.

Your corporate income tax return — Form C-S, Form C-S (Lite) or Form C, depending on your company — is due by 30 November each year. ECI comes earlier, within three months of your year-end. We track both for every client.

Singapore's headline corporate tax rate is 17%. New companies can enjoy a partial exemption on early profits if they qualify, and there are rebates and incentives that change with each Budget. We check which ones apply to your company this year rather than quote figures that may be out of date.

Nine times out of ten, it's the accounts underneath, not the tax form. Costs paid personally and never recorded, capital allowances never claimed, exemptions assumed rather than checked — all of these push the bill up quietly. Sometimes it's the opposite: private expenses or unapproved director's fees left in, which make the tax look lower until IRAS asks. We start from the accounts, then compute.

It depends on your circumstances — not every relief applies to everyone, and claiming the wrong ones causes problems later. We work out which are genuinely relevant to you, and we make sure your personal filing tells the same story as your company's.

If your company pays certain amounts to non-residents — for services, royalties, interest, or fees to non-resident directors, for example — withholding tax may apply and it must be filed and paid to IRAS by the deadline. Tell us before the payment goes out, not after.

Not quite your situation?  ASK ON WHATSAPP →  ·  FULL FAQ →

Next · GSTThen the other tax. The quarterly one.

Income tax comes once a year. GST comes every quarter, and its penalties stack. If you're near the threshold, read this next.

See GST registration
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