NEBIS.AI / SERVICES / 03 / TAX
Corporate tax in Singapore, computed while you sleep.
ECI, Form C-S/C, GST and withholding tax — drafted from your live ledger with every IRAS deadline tracked by AI. Your position is modelled continuously through the year, so tax season becomes a review, not a scramble.
What's included
The full tax scope.
Corporate income tax
ECI and Form C-S/C prepared, reviewed and filed on time — with positions documented for IRAS scrutiny.
GST compliance
Registration, quarterly F5 returns and corrections, with input claims checked line by line.
Withholding tax
Section 45 obligations identified automatically from your payables — before the payment goes out.
Tax planning & reliefs
Start-up and partial exemptions, capital allowances, loss transfers and group relief, applied proactively.
IRAS queries & audits
Responses built from a ledger where every entry already carries its reasoning and evidence.
Directors' personal tax
Employment income, director's fees and benefits handled alongside the company's position.
Run on the engine
What changes when the engine does the tax.
A live tax position, all year
Most firms compute your tax once, after year-end, when it's too late to change anything. The engine models your position every night — so reliefs, timing and structure decisions happen while they still matter.
Tracked by AI
ECI at three months, GST every quarter, Form C-S/C in November — every obligation for every entity sits on an AI-watched calendar. Late filing simply stops being a failure mode.
Humans on the positions
The engine drafts computations and flags judgement calls — treatment of a provision, a border-line deduction. A tax professional decides, documents and signs. That's the part that never changes.
Tax season shouldn’t be a season. It should be a Tuesday morning review.
— Nebis · Singapore · AI runs the process. People own the opinion.
Common questions
Tax questions, answered straight.
When is my company's ECI due?+
Within three months of your financial year-end. You're waived from filing if annual revenue is S$5 million or below and your ECI is nil — many small companies qualify without realising. Our engine works this out per entity and files only what's actually required.
What is Singapore's corporate tax rate?+
A flat 17%, before exemptions. The partial tax exemption and the start-up exemption for qualifying new companies significantly reduce the effective rate on the first few hundred thousand dollars of chargeable income — we apply whichever puts you ahead.
When must I register for GST?+
Registration is compulsory when taxable turnover exceeds S$1 million — either looking back over the past 12 months or when you can reasonably expect to exceed it ahead. GST is currently 9%. Because the engine watches your live revenue, you'll know you're approaching the threshold months before you cross it.
Can AI really prepare my tax return?+
It drafts; it doesn't decide. The engine builds the computation from your ledger with every adjustment traceable, then a qualified tax professional reviews the judgement calls and signs the filing. You get AI speed and consistency with human accountability — which is also what IRAS expects.
Make tax season a non-event.
A 30-minute walkthrough of the Nebis engine, on your numbers or ours. No deck, no pitch — just the system, running live.