---
title: "Corporate Tax Simplified | Expert Corporate Tax Guides Singapore"
description: "Comprehensive, easy-to-understand guides on Singapore corporate tax, GST, filing procedures, and business tax planning. Demystifying IRAS compliance for SMEs."
url: "https://corporate.taxinfo.sg/"
language: "en"
---

Singapore Corporate Tax Resource

#  Corporate Tax Guide

Everything SME owners need to file, comply, and save. 

Plain English guides on corporate tax filing, GST, exemptions, and deductions — built for Singapore business owners, not accountants. 

[ Browse Guides ](/filing)

01

17%

### Corporate Tax Rate

02

30 Nov 

### Filing Deadline \(Form C-S\)

03

GST

S$1M

### GST Registration Threshold

## What We Cover

Comprehensive guides across every aspect of Singapore corporate tax compliance. 

### [Corporate Tax Filing Form C, C-S, C-S Lite — step-by-step filing guides and deadlines. ](/filing) ### [GST Registration, filing, rates, and schemes — when and how to comply. ](/gst) ### [Tax Exemptions Startup exemption, partial exemption, and incentive schemes explained. ](/exemptions) ### [Business Deductions What's deductible, what's not, and how capital allowances work. ](/deductions) ### [Withholding Tax Rates, obligations, and how to handle payments to non-residents. ](/withholding-tax) ### [Tax Planning Legal strategies to reduce your corporate tax bill as an SME. ](/planning)

##  Stop guessing your tax obligations.  Start filing with confidence.  Our guides walk you through every step.

##  Filing  
Process

### 01 / Determine

Which form to file — C, C-S, or C-S Lite.

### 02 / Calculate

Compute chargeable income and tax payable.

### 03 / Claim

Apply exemptions, deductions, and incentives.

01

### Determine Your Filing Form

Not every company files the same form. Your revenue, business type, and claim history determine whether you use Form C-S Lite, Form C-S, or the full Form C. Getting this right is the first step. 

  * Revenue ≤ S$200K? → Form C-S Lite \(3 fields\) 
  * Revenue ≤ S$5M? → Form C-S \(simplified\) 
  * All others → Form C \(full filing\) 

[Read the full comparison →](/filing/form-c-vs-c-s)

02

### Calculate Your Tax

Start with your accounting profit, add back non-deductible expenses, subtract capital allowances, and apply the prevailing tax rate. The result is your tax payable — before exemptions. 

  * Adjusted profit = Revenue − allowable expenses 
  * Flat 17% corporate tax rate on chargeable income 
  * Effective rate often lower after exemptions 

[See the calculation guide →](/tax-rates/how-to-calculate)

03

### Claim Exemptions & Save

New companies get up to S$125K tax-free in the first 3 years. All companies benefit from partial tax exemption on the first S$200K. Knowing what to claim is how you legally minimise your bill. 

  * Startup exemption: 75% on first S$100K, 50% on next S$100K 
  * Partial exemption for all companies on first S$200K 
  * R&D and productivity incentives available 

[Explore all exemptions →](/exemptions)

## TaxInfo Network

Part of Singapore's most comprehensive free tax resource. 

### [TaxInfo.sg The hub — tax overviews, calendars, glossary, and getting started guides. ](https://taxinfo.sg) ### [Personal TaxInfo Individual income tax filing, reliefs, and personal tax planning. ](https://personal.taxinfo.sg) ### [Tax Glossary 35+ Singapore tax terms explained in plain English. ](https://taxinfo.sg/tax-glossary)

##  Ready to File?

Start with our most popular guide — a complete walkthrough of corporate tax filing in Singapore. 

[ Read the Filing Guide ](/filing/how-to-file-corporate-tax)