If your business buys software subscriptions, consultancy, marketing or other services from overseas suppliers, you may need to understand GST reverse charge in Singapore. It is one of the less familiar parts of the Goods and Services Tax (GST) system, because it applies only to certain businesses, and it flips the usual rule about who accounts for the tax.
This guide explains who reverse charge applies to, what it covers, and how it works in practice. It is general information, not tax advice. The Inland Revenue Authority of Singapore (IRAS) publishes detailed e-Tax Guides on reverse charge, and rules, rates and thresholds can change, so check the current guidance or speak to a tax adviser before acting.
Why Reverse Charge Exists
Normally, the supplier charges GST and pays it to IRAS. When a Singapore business buys a service from an overseas supplier who is not GST-registered here, no Singapore GST is charged. For most fully taxable businesses this makes little difference, because they could have claimed that GST back as input tax anyway.
The issue is with businesses that cannot claim back all their input tax, such as banks, insurers and other businesses that make exempt supplies, and charities with non-business activities. Without reverse charge, these businesses would have a reason to buy services from overseas instead of locally, because overseas services would effectively be GST-free while local ones carry irrecoverable GST. Reverse charge levels the playing field by making the buyer account for GST on those imports, as if it were the supplier.
Who Must Apply Reverse Charge
Reverse charge applies to GST-registered businesses that would not be entitled to full input tax credit. In IRAS terms, these are commonly called “reverse charge businesses” and typically include:
- Partially exempt businesses, which make both taxable and exempt supplies. Common examples are businesses with significant financial services income, or property businesses with residential rental income.
- Charities and voluntary welfare organisations that receive non-business income such as donations or grants.
- Members of a GST group where the group as a whole is not entitled to full input tax credit.
Businesses that are entitled to full input tax credit are generally not required to apply reverse charge, because the net effect would be zero. Check IRAS guidance if you are unsure which side of the line you sit on, especially if your business has a small amount of exempt income such as interest.
Not yet GST-registered? Imported services can count towards GST registration for businesses that would not be entitled to full input tax credit if registered. IRAS sets out when imported services push a business over the registration threshold, so non-registered businesses with large overseas service purchases should check whether they may become liable to register.
What Reverse Charge Covers
Reverse charge started with imported services and was later extended. Broadly, it can cover:
- Imported services bought from overseas suppliers, such as software, cloud services, consultancy, legal, marketing, design and data services. Both digital and non-digital services can be in scope.
- Imported low-value goods (LVG), meaning goods below a set value threshold that are bought from overseas and brought into Singapore by air or post, where GST would otherwise not be collected at import. IRAS sets the threshold, so check the current figure.
There are also exclusions. IRAS guidance lists categories of imported services that are not subject to reverse charge, for example services that would be zero-rated or exempt if supplied in Singapore, and certain other categories. Read the e-Tax Guide carefully, because the exclusions decide a lot of the practical outcome.
How Reverse Charge Works in Practice
Here is the basic flow for a reverse charge business:
- Identify the purchase. You receive an invoice from an overseas supplier with no Singapore GST charged.
- Account for output tax. You calculate GST on the value of the service at the prevailing GST rate, and report it in your GST return as if you had made the supply yourself.
- Claim input tax, subject to the usual rules. You may claim that GST as input tax to the extent it is attributable to your taxable supplies, using your normal input tax recovery method.
- The difference is your real cost. The portion you cannot recover, because it relates to exempt or non-business activities, becomes a real cost to the business.
A simple illustration: if roughly half of your activities are exempt and half taxable, you would account for GST on an imported service and then recover only the share linked to taxable supplies. The rest is the irrecoverable GST that reverse charge is designed to collect.
| Business type | Reverse charge applies? | Practical effect |
|---|---|---|
| Fully taxable GST-registered business | Generally no | No GST to account for on most imported services |
| Partially exempt GST-registered business | Yes, on in-scope imports | Account for GST, recover only the taxable portion |
| Charity or VWO with non-business income | Yes, on in-scope imports | Irrecoverable GST on the non-business portion |
| Not GST-registered, large imported services | May trigger registration | Check whether imported services make you liable to register |
Interaction With Overseas Vendor Registration
Some overseas suppliers register for Singapore GST under the overseas vendor registration regime, mainly to charge GST on sales to consumers. If an overseas supplier charges you Singapore GST, you are a GST-registered business buyer and you should tell them so. In many cases a GST-registered business should give its GST registration number to the overseas supplier so they do not charge GST, and you then apply reverse charge yourself if required. Check IRAS guidance on how to handle supplies where GST was charged in error.
Getting Your Records and Systems Ready
Reverse charge is mostly a process problem. Practical steps:
- Map your overseas spend. Pull a list of overseas suppliers from your accounts payable, credit card statements and subscriptions. Small SaaS subscriptions add up.
- Tag reverse charge transactions. Set up a tax code in your accounting software so imported services and LVG are flagged automatically.
- Use consistent exchange rates. Foreign currency invoices need converting to Singapore dollars using an exchange rate method IRAS accepts. Stay consistent.
- Keep documents. Retain invoices, contracts and payment records that show the nature and value of each service.
- Review your input tax recovery method. Reverse charge makes your recovery formula matter more, so make sure it is up to date and approved where required.
- Train your finance team. Staff approving purchases should know to flag overseas services.
Common Mistakes to Avoid
- Assuming reverse charge does not apply because the supplier is “only” a small overseas vendor.
- Forgetting intra-group recharges from overseas parent companies, which can be imported services.
- Claiming back the full reverse-charged GST instead of only the recoverable portion.
- Ignoring the low-value goods rules when buying equipment or supplies from overseas online stores.
- Not reviewing whether your business is still fully taxable after adding a new income stream.
If you discover past errors, IRAS has a voluntary disclosure process, and correcting mistakes early is generally treated more favourably than waiting for an audit.
Where to Check the Current Rules
IRAS is the authority on reverse charge. Its website has e-Tax Guides on imported services and low-value goods, examples, and FAQs. For complex cases, such as GST groups, financial services or cross-border group recharges, a GST adviser can review your position.
For a refresher on how GST shows up for consumers, see service charge, GST and tipping in Singapore. If you are tidying up how your business pays overseas suppliers, our guide to understanding bank fees and charges covers the costs of cross-border payments.
Frequently Asked Questions
Does my small business need to worry about GST reverse charge? Probably not if you are GST-registered and entitled to full input tax credit, as the net effect would be zero. It matters for partially exempt businesses, charities with non-business income and some GST groups. Check IRAS guidance if you have small exempt income such as interest.
Can overseas services push a non-registered business into GST registration? They can. Imported services can count towards the registration threshold for businesses that would not be entitled to full input tax credit if registered. Non-registered businesses with large overseas service purchases should check IRAS guidance on whether they may become liable to register.
What if an overseas supplier has already charged me Singapore GST? Some overseas suppliers register under the overseas vendor registration regime. A GST-registered business should usually give its GST registration number so GST is not charged, then apply reverse charge if required. For GST charged in error, check IRAS guidance.
Are imported low-value goods covered by reverse charge too? They can be. Low-value goods below a set value threshold, bought from overseas and brought in by air or post, may fall in scope where GST would otherwise not be collected at import. IRAS sets the threshold, so check the current figure.
How should I prepare my accounts for reverse charge? Map your overseas spend from payables, card statements and subscriptions, and set up a tax code so imported services are flagged automatically. Convert foreign currency consistently using a method IRAS accepts, keep invoices and contracts, and review your input tax recovery method.
Official sources: IRAS
Further reading: How to File a GST F5 Return With IRAS