How Singapore's tax refund works

A tax refund in Singapore happens when you have paid more income tax than you actually owe. The Inland Revenue Authority of Singapore (IRAS) calculates what you owe based on your income and deductions, compares it to what you have already paid through your employer or as an individual, and sends you the difference. Most people who receive refunds are employees whose employers withheld too much tax, or self-employed people who made estimated payments that turned out to be higher than their final bill.

The refund process is automatic if you file a tax return and IRAS determines you have overpaid. You do not need to request it separately. However, you do need to file a return first — IRAS will not know you are owed money unless you tell them.

Refunds are typically issued as a bank transfer to the account you provide on your return. The timing depends on when you file and whether IRAS needs to ask you questions about your return.

Key Takeaways

  • You receive a refund when you have paid more tax than you owe, and IRAS calculates this automatically once you file your return.
  • Most employees get refunds because their employer withheld too much tax throughout the year.
  • You must file a tax return with IRAS for them to process your refund — they will not contact you first.
  • Refunds are paid by bank transfer to the account you list on your return, usually within a few weeks of filing if no issues arise.
  • You can check the status of your refund through myTax Portal using your SingPass login.

Who needs to file a tax return to get a refund

Not everyone in Singapore is required to file a tax return. IRAS only requires you to file if your income exceeds a certain threshold or if you have income from sources that are not automatically reported to IRAS. However, if you think you have overpaid tax, you can file a return even if you are not required to — this is how you claim your refund.

Employees whose tax was withheld by their employer can file a return to claim back any overpayment. Self-employed people and those with investment income or rental income should file to may support they pay the correct amount and receive any refund owed. If you are unsure whether you need to file, IRAS provides a checklist on their website that walks through your situation.

How to file your tax return with IRAS

The main way to file is through myTax Portal, IRAS's online system. You log in using your SingPass (your national digital identity), enter your income and deductions, and submit. The system guides you through each section and shows you what documents you will need to have ready — such as your payslips, receipts for deductible expenses, or statements from your bank if you have investment income.

Filing through myTax Portal usually takes 20 to 40 minutes if you have your documents organised. You can save your return and come back to it later if you need to gather more information. Once you submit, you receive a confirmation number.

If you cannot file online or prefer not to, you can request a paper form from IRAS, but this takes longer to process. Most people file online because it is faster and you get when ready confirmation that IRAS has received your return.

What documents you need before filing

Gather these documents before you start your return. For employment income, you need your payslips or an income statement from your employer showing your gross salary and tax withheld. For self-employment or business income, you need records of what you earned and what you spent — invoices, receipts, and bank statements help prove both. If you have rental income, bring lease agreements and records of expenses like maintenance or property tax.

You will also need documentation for any deductions you are claiming. Common deductible expenses include contributions to your Central Provident Fund (CPF), life insurance premiums, and donations to approved charities. Keep receipts or statements that show the amount and date. If you are claiming a spouse or child as a dependent, you will need their identification details and proof of relationship.

Have your bank account details ready — the account where you want IRAS to deposit your refund. IRAS will not process a refund without a valid bank account number.

How long it takes to receive your refund

If your return is straightforward and IRAS has no questions, you can expect your refund within two to four weeks of filing. The timeline starts from the date IRAS receives your return, not the date you submit it online. Once processed, the money is transferred to your bank account — the actual bank transfer usually takes one to three business days after IRAS approves it.

If IRAS needs more information from you, they will contact you by email or through myTax Portal. This can add one to two weeks to the process. Some returns take longer if they involve complex income sources or if IRAS is verifying information with other agencies.

You can check the status of your refund anytime by logging into myTax Portal and viewing your return. The portal shows whether your return is being processed, approved, or paid.

Common reasons your refund might be delayed

IRAS may ask for additional documents if the information on your return does not match what they have on file from your employer or bank. For example, if your reported income differs from what your employer reported, they will ask you to explain. Have your payslips ready to resolve this quickly.

If you claim deductions that IRAS questions — such as large business expenses or charitable donations — they may request receipts or proof. Providing these promptly speeds up approval. Some refunds are also delayed if you have outstanding tax debt from previous years; IRAS may offset your refund against what you owe.

Filing errors also cause delays. Common mistakes include entering the wrong bank account number, forgetting to sign the return (if filing on paper), or providing incomplete information about your income sources. Reviewing your return carefully before submitting helps avoid these issues.

What to do if you do not receive your refund

First, check myTax Portal to confirm that your return was received and processed. If the portal shows your return was approved and paid, but the money has not arrived in your bank account, contact your bank to ask whether the transfer is still in progress. Bank transfers can occasionally take longer than expected.

If myTax Portal shows your return is still being processed after six weeks, or if it shows an error, contact IRAS directly. You can reach them through the contact form on their website, by phone, or by visiting an IRAS office in person. Have your return confirmation number and identification ready when you contact them.

If IRAS offset your refund against tax debt you owe, they will notify you of this in myTax Portal or by letter. You can dispute the offset if you believe it was made in error, but you will need to provide documentation supporting your position.

Frequently Asked Questions

Can I file a tax return even if my employer already filed information about me with IRAS?

Yes. Your employer reports your income and tax withheld to IRAS, but you can still file your own return to claim deductions, report additional income, or correct errors. Filing your own return does not conflict with what your employer reported — IRAS uses both to calculate what you owe.

What if I filed my return but realised I made a mistake?

You can amend your return through myTax Portal if IRAS has not yet issued an assessment. If an assessment has already been issued, you can request a review by submitting a letter to IRAS with supporting documents explaining the error. IRAS will recalculate and issue a revised assessment if the error is confirmed.

Do I need to report my refund as income on next year's tax return?

No. A tax refund is not income — it is money you overpaid in the previous year. It does not count as taxable income in the year you receive it.

What if I have not filed a tax return in previous years but think I am owed a refund?

You can file returns for previous years, though there are time limits. Generally, you can file a return up to four years after the end of the year in which the income was earned. Contact IRAS to confirm the important date for your specific situation and to request forms for prior years.

Can I use my refund to pay outstanding tax debt I owe from another year?

IRAS will automatically offset your refund against any tax debt you owe, so the refund will be applied to what you owe rather than paid to you. If you want to dispute this, you must contact IRAS and provide documentation showing that the debt is incorrect or that you have already paid it.