Follow us on social media and share your feedback

Download our app‍s‍:

Download on the App StoreGet it on Google Play
Singapore
  • Hong Kong
  • UK
  1. Osome Blog Singapore
  2. DIN It: IRAS Document Identification Number Explained

DIN It: IRAS Document Identification Number Explained

DIN It: IRAS Document Identification Number Explained

A Document Identification Number (or DIN) is a small but compulsory thing when filing your tax reports to IRAS — Inland Revenue Authority of Singapore.

When you need it, how to get it, what to use it for?  Your accounting company in Singapore already has the answers. However, it may still be useful to understand how your tax filings work. So below we explain everything you need to know.

What is DIN?

DIN is a unique number code. IRAS generates a new DIN for your company every year to identify each income tax return you submit. DIN is required only if you paper-file your tax return.

The filing goes through Form C-S/C, and a company’s DIN is to be found on this form for every specific Year of Assessment (YA) period.

DIN is a set of letters and figures, here is an example of one: SC 206 16264567890 023.

IRAS made e-filing of the Form C-S/C compulsory in 2018, planning to fully switch to the system step by step by 2020.

Year of Assessment Companies obliged to e-file tax returns
2018 onwards Companies with over $10 mln revenue in YA 2017
2019 onwards Companies with over $1 mln revenue in YA 2018
2020 onwards All companies

IRAS sends companies a notification letter about the Form C-S/C by May each year starting from the second year of incorporation. Companies must file their Income Tax Return by 30 November if they still file it in paper and by 15 December if they do that online (e-filing) in the year following the financial year end. So, you have 11 months between the time of closing of the accounts and filing the tax with the government.

Company’s financial year end Period covered in the accounts Year of Assessment Paper-filing due date E-filing due date
31 December 1 January 2019 to 31 December 2019 2020 30 November 2020 15 December 2020
31 July 1 August 2017 to 31 July 2018 2019 30 November 2019 15 December 2019


How to get a DIN?

DIN is issued after your Form C-S/C is issued.

When you e-file your taxes, you log in to IRAS myTax portal and choose “File Form C-S / C” —  the DIN will be provided automatically once you do a filing through the portal. You don’t see the DIN number in this case, as it is generated and identified electronically.

How to get your DIN through the IRAS website if you file paper returns:

  • select the YA (the service offers to see DINS for this YA and two previous ones);
  • enter your tax reference number;
  • type in the verification code;
  • get your DIN.

You can get your DIN on IRAS website

Tip

If you are a tax agent, you can get DINs for up to 10 clients in one search.

When you are not able to get a DIN

  1. It’s been less than 2 years since the company was incorporated. Most of the newly incorporated companies don’t start operations and get profits during this period, so IRAS doesn’t expect you to close your first set of financial statements (like profit & loss, balance sheet, etc.) during this time. So, they don’t issue Form C-S/C for you and don’t send you a notification letter about it. If you start a business and get some profit in these 2 years, you must e-file your income tax return through your company’s IRAS account yourself.
  2. A company has been granted a waiver to submit the income tax return. It happens when your company becomes Dormant. You can find what you need to get this waiver in Osome’s guide through Dormant companies in Singapore.
  3. Form C-S/C for a particular YA has already been filed. To find out the status of your income tax return, you should also check it out in your IRAS account.
Share this post:

Tips to run your business smarter.
Delivered to you monthly.

You'll receive a verification email you'll have to open and confirm the subscription.

You might like it

Statistics on E-commerce in the Singapore in 2021
E-commerce

Statistics on E-commerce in the Singapore in 2021

E-commerce now accounts for more than one quarter of all retail sales in the UK. This number is expected to steadily increase in the years ahead, and would reach nearly one-third of all retail sales by 2024.

Do Your Employees Working Remotely Overseas Have to File Income Tax in Singapore?
Tax

Do Your Employees Working Remotely Overseas Have to File Income Tax in Singapore?

What happens if your foreign employee was on a short-term business trip to Singapore and is unable to return to their resident country? Let’s find out.

A Complete Guide to Filing Estimated Chargeable Income
Tax

A Complete Guide to Filing Estimated Chargeable Income

Starting YA 2020 all companies in Singapore need to file ECI. There are some exceptions, find out if you have to file.

A Guide to Issuing Share Certificates for Singapore Companies
Entrepreneur's Bootcamp

A Guide to Issuing Share Certificates for Singapore Companies

If you are starting a new company, you will need to issue a share certificate when your company is being incorporated. This article will go through the information you need to prepare this document.

Dates and Events to Use in Your 2021 E-commerce Sales Campaigns
E-commerce

Dates and Events to Use in Your 2021 E-commerce Sales Campaigns

Singaporeans spent an average of S$113 online from January to June 2020, driven mostly by high-value shoppers. Find out which dates they do more shopping on.

7 Best Platforms for E-Commerce Entrepreneurs to Sell
E-commerce

7 Best Platforms for E-Commerce Entrepreneurs to Sell

You do not need to spend much time, money, or have much know-how to build your online stores from scratch. Most of the time, the best and fastest option is to sign up with established e-commerce platforms. Here are some of them.

How to Manage Expenses When You Have a Remote Workforce
Running My Business

How to Manage Expenses When You Have a Remote Workforce

One issue a company faces with a team working from home is also managing the company’s budgets. Employees find it hard to access a company's funds while the finance team finds it difficult to administer these expenses.

A Guide to Income Tax for Foreign Company Owners and Directors in Singapore
Tax

A Guide to Income Tax for Foreign Company Owners and Directors in Singapore

This article is for you if you want to know whether you have to pay tax in Singapore on your own salary and are a foreign company owner

A Guide to Setting Up a Holding Company
Incorporation

A Guide to Setting Up a Holding Company

A holding company is an ‘umbrella’ or ‘parent’ company which does not provide products or services like a normal company. That’s what makes it relatively easier to set up a holding company virtually anywhere in the world.

Record Keeping Done Right
Entrepreneur's Bootcamp

Record Keeping Done Right

Record keeping in accounting is a process that most newly formed companies cannot ignore, but what is the most efficient way to approach this? Our partner, Navisteps has some advice for new companies.

Choosing a Financial Year End Date for My Singapore Company
Secretary

Choosing a Financial Year End Date for My Singapore Company

When you incorporate, you need to choose your financial year end date which determines when your corporate filings and taxes are due. Read on to find out how to choose the date for your company.

7 Steps To Keep Invoices Organised for Small Business Accounting
Accounting

7 Steps To Keep Invoices Organised for Small Business Accounting

Managing business finances might be challenging. Staying on top of your invoices and receipts will help you stay on top of your finances. We take you through 7 steps that will help keep you organised.

Tips to run your business smarter. Delivered to you monthly.

You'll receive a verification email you'll have to open and confirm the subscription.

We’re using cookies! What does it mean?