Malaysia's tax system faces a difficult challenge: the government needs a stable and sustainable source of revenue, while households and businesses need protection from excessive costs and administrative burdens.
This has kept the debate over the Goods and Services Tax (GST) and Sales and Service Tax (SST) alive. GST was introduced in Malaysia in 2015 as a broad-based consumption tax and replaced by SST in 2018. Since then, GST has periodically returned to the national policy debate, particularly as the government seeks to strengthen fiscal sustainability.
An alternative to simply choosing between GST and SST is a hybrid GST-SST system.
Rather than replacing SST entirely with GST, Malaysia could combine selected features of both. GST could provide a broad consumption-tax base and an input-tax-credit mechanism, while SST could remain as a targeted tax on luxury, discretionary or specifically identified goods and services.
The concept is potentially workable—but only if the two taxes have clearly defined roles.
What Would “GST + SST” Mean?
A hybrid system should not mean simply imposing GST and SST on the same transaction.
Doing so could create tax-on-tax effects, increase prices unnecessarily and make the tax system difficult to administer.
Instead, the two taxes could serve different purposes:
- GST: A broad, relatively low-rate consumption tax covering most goods and services.
- SST: A targeted supplementary tax on selected luxury, discretionary or socially undesirable consumption.
- Zero-rating/exemptions: Protection for essential goods and services.
- Targeted transfers: Assistance for lower-income households.
In simple terms:
GST provides the broad revenue base; SST provides targeted taxation.
This division could allow Malaysia to retain some of the advantages of GST while preserving SST's ability to target particular forms of consumption.
Why Consider a Hybrid System?
1. A broader and more stable revenue base
A broad consumption tax can provide government revenue from a wide range of economic activity. This can reduce excessive reliance on more volatile revenue sources such as corporate profits or commodity-related income.
A stable revenue base is particularly important as Malaysia's expenditure requirements increase with infrastructure, healthcare, education and social protection needs.
2. Reducing tax cascading
One of GST's important features is the input-tax-credit mechanism.
Businesses generally receive credit for eligible GST paid on their inputs. This reduces the extent to which tax becomes embedded in the cost of production at each stage of the supply chain.
For businesses, this can improve transparency and reduce tax distortions.
SST does not operate in the same comprehensive manner. Tax paid earlier in the supply chain can become part of the cost of subsequent transactions.
A GST component could therefore improve tax neutrality while SST remains available for targeted taxation.
3. Protecting essential consumption
One of the strongest concerns about GST is its effect on the cost of living.
A hybrid model could address this by protecting essential goods and services through zero-rating or carefully designed exemptions.
Potential categories could include:
- Basic food
- Essential healthcare
- Basic education
- Public transportation
- Other clearly defined necessities
However, exemptions should be limited. Too many exemptions can make the system complicated and create opportunities for businesses to manipulate product classifications.
4. Taxing luxury consumption
SST could be used to impose additional taxation on luxury or discretionary consumption.
For example:
Basic necessities → 0% GST + 0% SST
Ordinary goods → low-rate GST
Luxury goods → low-rate GST + additional SST
This would allow the government to raise additional revenue from consumers with greater discretionary spending capacity without applying a high GST rate across the entire economy.
A Possible Malaysian Model
A possible framework could look like this:
| Category | GST | SST |
|---|---|---|
| Basic necessities | 0% | 0% |
| Essential healthcare | 0% / exempt | 0% |
| Basic education | 0% / exempt | 0% |
| Ordinary goods | Low rate | 0% |
| Ordinary services | Low rate | 0% |
| Luxury goods | Low rate | Additional SST |
| Luxury services | Low rate | Additional SST |
| Selected harmful/discretionary products | Low rate | Higher SST |
| Exports | 0% | 0% |
The actual rates would need to be determined through detailed economic modelling.
The important principle is that GST and SST should not duplicate each other unnecessarily.
The SME Question
Small and medium enterprises would be a critical consideration.
GST registration, accounting and reporting can impose costs on smaller businesses. A hybrid system should therefore maintain a sufficiently high registration threshold so that genuinely small businesses are not burdened by complex compliance requirements.
At the same time, the threshold should not be so high that large portions of the economy fall outside the tax system.
Digitalisation could help.
Malaysia's expanding e-invoicing infrastructure provides an opportunity to integrate tax reporting with existing digital transactions. A modern system could automate much of the calculation, reporting and record-keeping process.
The objective should be:
Make compliance automatic where possible and simple where automation is not possible.
Avoiding Tax-on-Tax
This is perhaps the most important technical issue.
If GST is imposed and SST is then calculated on the GST-inclusive price, the effective tax burden could become higher than intended.
Therefore, legislation would need to establish precisely how the two taxes interact.
For example, SST could be limited to specifically identified categories and calculated using a clearly defined tax base.
The government should avoid creating a system in which businesses need complicated calculations simply to determine whether one tax applies before or after another.
A hybrid system will only work if taxpayers can understand it.
Protecting Lower-Income Households
A consumption tax is not automatically progressive because lower-income households generally spend a larger proportion of their income on consumption.
This means tax reform should combine taxation with redistribution.
Rather than creating hundreds of exemptions, Malaysia could consider:
A broad, low-rate GST + limited protection for essentials + targeted cash assistance.
This approach has two advantages.
First, the tax system remains relatively simple.
Second, assistance can be directed specifically toward households that need it rather than providing the same tax benefit to high-income and low-income consumers.
The government could also use additional tax revenue to strengthen healthcare, education, public transportation and other services that disproportionately benefit lower- and middle-income households.
Impact on Businesses
A properly designed GST component could benefit businesses by allowing them to recover eligible input taxes.
However, implementation would involve significant transition costs.
Businesses would need to:
- Upgrade accounting systems
- Train employees
- Adjust pricing systems
- Modify invoices
- Update software
- Understand new tax classifications
- Manage cash-flow changes
The government should therefore provide adequate preparation time and clear technical guidelines.
A rushed implementation could create unnecessary disruption and undermine confidence in the reform.
Impact on Investment
Tax neutrality is also important for investment.
A broad GST with input credits can reduce some distortions because businesses are generally taxed based on final consumption rather than repeatedly taxing inputs throughout the supply chain.
However, excessive SST rates on specific industries or products could create new distortions.
SST should therefore be used only where there is a clear policy objective, such as:
- Luxury taxation
- Environmental objectives
- Public-health considerations
- Negative externalities
- Additional revenue from discretionary consumption
It should not become a substitute for industrial policy.
The Risk of Complexity
The strongest argument against a hybrid system is complexity.
Businesses would need to know:
- Which goods and services are subject to GST
- Which are subject to SST
- Whether both apply
- How input-tax credits work
- How imports and exports are treated
- Which exemptions apply
- How refunds are processed
If these rules become excessively complicated, the compliance burden could outweigh some of the benefits.
Therefore, the government should follow a simple principle:
Every additional tax rule must have a clear economic or social purpose.
If a rule does not serve a meaningful purpose, it should not be included.
Implementation Should Be Phased
Malaysia should not attempt to introduce a hybrid GST-SST system overnight.
A sensible implementation strategy could involve six stages.
1. Policy modelling
Assess the impact on household expenditure, inflation, businesses, SMEs, investment and government revenue.
2. Public consultation
Engage businesses, professional bodies, economists, consumer groups and civil society.
3. Legislation and technical guidelines
Publish the rules well before implementation so businesses have sufficient preparation time.
4. Digital preparation
Integrate tax administration with e-invoicing and other digital systems.
5. Transition period
Give businesses sufficient time to upgrade systems and train staff.
6. Independent review
After implementation, assess revenue performance, price effects, compliance costs and distributional outcomes.
Any adjustments should be based on evidence rather than short-term political pressure.
Is Hybrid GST-SST Better Than GST or SST Alone?
There is no perfect tax system.
GST alone offers broad coverage, input-tax credits and relatively strong tax neutrality, but it can be politically sensitive and requires effective measures to protect vulnerable households.
SST alone allows more targeted taxation and can be simpler in certain respects, but its narrower base and lack of a comprehensive input-credit mechanism can create distortions.
A hybrid GST-SST system could combine the strengths of both, but it would also be more complicated to design.
Its potential advantage is flexibility:
- Low-rate GST for broad consumption
- Targeted SST for luxury and discretionary consumption
- Protection for essential goods
- Targeted assistance for vulnerable households
This could produce a more balanced tax structure.
Conclusion
A GST + SST hybrid system is potentially workable for Malaysia, but it should not be interpreted as simply putting two taxes on top of each other.
The more sensible approach is to give each tax a distinct role.
GST could provide the broad foundation of the consumption-tax system, supported by input-tax credits and digital administration. SST could then be retained as a targeted supplementary tax on luxury, discretionary or otherwise specifically justified consumption.
Essential goods should receive appropriate protection, while lower-income households should be supported through targeted transfers and better public services.
The government must also ensure that the system does not create unnecessary tax-on-tax effects or excessive compliance costs.
Ultimately, the success of a hybrid GST-SST system will depend less on the names of the taxes than on the quality of the design.
The ideal system should be broad without being excessive, progressive without being overly complicated, efficient without imposing unnecessary business costs, and capable of generating sustainable revenue for Malaysia's long-term needs.
If those principles can be achieved, a hybrid GST-SST framework could offer Malaysia a viable middle path between the existing SST model and a full return to the previous GST system.
William Lee (kokwei67@gmail.com) is a content creator under the Newswav Creator programme, where you get to express yourself, be a citizen journalist, and at the same time monetize your content & reach millions of users on Newswav. Log in to creator.newswav.com and become a Newswav Creator now!
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