Introduction: The New Era of Tax Compliance
Every business in Singapore must file taxes each year. This task goes beyond mere paperwork — it marks a compliance milestone. Owners of small startups and growing enterprises alike need to know the latest Income Tax Filing Singapore 2025 guidelines.
As the Inland Revenue Authority of Singapore (IRAS) plans to put into action new digital filing rules in 2025 in 2025, getting ready is crucial. Companies that start using automated systems will steer clear of mistakes, fines for late submissions, and last-minute pressure.
IRAS requires all Singapore businesses to file income taxes in 2025 — making it vital to get ready and use automated systems to follow the rules.
1. Key Tax Filing Deadlines to Remember
IRAS has strict deadlines for corporate tax filing in Singapore. If you miss these dates, you might face money penalties and problems with following the rules.
| Filing Type | Form / Requirement | Deadline | Notes |
| Corporate Tax Return | Form C, C-S, or C-S Lite | 30 November 2025 | Mandatory even if no income is earned |
| Estimated Chargeable Income (ECI) | — | Within 3 months from financial year-end | e.g., FY ending 31 Mar 2025 → due 30 Jun 2025 |
| Employment Income Reporting | IR8A, IR8S, Appendix 8A/8B, IR21 | 1 March 2025 | Mandatory for all employees (earning > S$500) |
Pro Tip: Use Info-Tech’s Payroll Software to create IRAS-compliant forms (IR8A, Appendix 8A/B, IR21) — making sure they’re accurate and ready to submit before deadlines.
2. The IRAS Auto-Inclusion Scheme (AIS): Required in 2025
The Auto-Inclusion Scheme (AIS) is a digital system that requires employers to send employee income information straight to IRAS.
This makes sure employees’ income details show up in their tax returns, boosting accuracy and speed.
Who Must Join AIS in 2025
- Companies that have 5 or more employees (directors included).
- Employers who opted in in 2024 must keep participating.
- New employers should sign up to avoid penalties.
Automation Tip: Manual filings are on their way out. Linking Info-Tech’s HRMS to IRAS enables instant data exchange, streamlines tax and CPF submissions, and cuts down on mistakes.
Starting 2025, every employer with five or more employees has to submit income info through IRAS’s Auto-Inclusion Scheme (AIS).
3. What’s New in 2025
The 2025 tax year shows how IRAS is changing to digital and watching compliance more strictly.
Main Changes
- Digital filing — paper forms won’t work anymore.
- Tougher checks on mistakes and late filings.
- Bigger fines for wrong or missing info.
- More audits for odd or late submissions.
In Short: If you file by hand or wait till the last minute in 2025, you might lose more than time — it could hurt your compliance status and company image.
Learn More: Ways to Reduce Your Personal Income Tax for Singapore Tax Residents
4. Tips for Smooth Income Tax Filing in 2025
Filing taxes doesn’t have to be a headache. Follow these steps to simplify your process and beat deadlines.
Get a Head Start
Gather documents and check employee income info 2–3 months before due dates.
Match CPF & Payroll Numbers
Compare salary and CPF records to ensure they’re correct and avoid IRAS issues.
Check Employee Info
Review NRICs, job titles, allowances, bonuses, and perks before you submit.
Pick IRAS-Approved Payroll Software
Make sure your payroll system works with IRAS e-submission formats. Good software like Info-Tech helps avoid rejections because of format problems.
Keep Records Ready for Audits
Store digital versions of important tax documents (Form C-S, IR8A, ECI) for at least 5 years to comply with IRAS rules.
5. Automation: The Smartest Tax Strategy
Entering data by hand takes a lot of time and can lead to mistakes — when you’re doing year-end reports. By 2025, you’ll need to automate.
Info-Tech helps by:
- Creates IRAS-ready forms (IR8A, IR8S, Appendix 8A/B).
- Keeps employee data in sync across HR, Payroll, and Accounting.
- Keeps an eye on submission deadlines and sends alerts and reminders.
- Cuts down on audit risks by providing digital compliance reports.
Info-Tech’s HRMS works with IRAS, MOM, and CPF systems — This helps businesses follow the rules without doing everything by hand.
When Singapore businesses use software to file income taxes, they can steer clear of fines, save hours, and stay on the right side of IRAS rules without breaking a sweat.
Final Thoughts: Start Your Tax Filing
Tax season doesn’t have to be a headache. With proper planning and the right digital tools, you can tackle Income Tax Filing Singapore 2025, and before the deadline.
In today’s digital-first compliance world, old-school methods and Excel sheets are becoming outdated. Automated systems now play a key role to ensure accuracy cut down on time, and keep HR, payroll, and finance teams in line with regulations.
Info-Tech Makes It Easy
Our all-in-one Payroll Software, Accounting Software, and HRMS Software is built to handle CPF, IRAS, and MOM reporting needs without a hitch — speeding up year-end tasks and cutting out mistakes.
Book A Free Demo today and learn how automation can change your compliance workflow for 2025 and beyond.
Frequently Asked Questions:
What is the corporate tax filing deadline in Singapore for 2025?
Companies need to file Form C, C-S, or C-S Lite by 30 November 2025.
When should companies submit Estimated Chargeable Income (ECI)?
Within 3 months after the financial year-end. For instance, if FY ends on 31 March, it’s due on 30 June.
What is the IRAS Auto-Inclusion Scheme (AIS)?
AIS makes employers send employee income data to IRAS. This allows IRAS to pre-fill tax returns.
What are the new IRAS changes in 2025?
Digital filing becomes mandatory. Penalties for mistakes become tougher. IRAS increases audits.
How can Info-Tech help with tax compliance?
Info-Tech’s HRMS & Payroll Software makes IRAS submissions automatic. It cuts down on human mistakes. It also makes sure you follow all digital rules.
