Construction service tax can’t be decided from the contract total alone. You need to identify the taxable service, contracting parties, project components, invoice treatment and any relief conditions.
For 2026, the general rate is 6%, and registration concerns relevant services exceeding RM1.5 million over 12 months. The detailed treatment can change depending on whether goods and services are genuinely separated, whether a project is residential, commercial or mixed, and whether a specific relief applies.
Start with the project and the parties
Record:
- the developer or property owner;
- main contractor and subcontractors;
- each party’s service-tax registration status;
- the services each contract actually covers;
- residential, commercial and shared project components;
- contract signature and stamping dates;
- price-review and variation clauses; and
- progress-claim and retention terms.
This map is more useful than assuming the same result for every party in the contracting chain.
How the registration value is assessed
Paragraphs 13–17 of Customs’ Guide on Construction Work Services, updated 17 March 2026 focus the threshold calculation on taxable service elements.
Where goods and construction services can be separated, that distinction matters. Where they can’t be separated, the entire construction-work value is taken into account. Taxable services that are exempted from payment can still count towards registration, so “no tax charged” doesn’t necessarily mean “ignore the value.”
Materials and services on the invoice
Paragraphs 22–24 of the guide provide an important billing distinction:
- when goods and services are separated on the same or separate invoices, service tax applies to the construction-service value;
- building materials must be supported at actual cost without markup; and
- when an invoice is an inseparable lump sum, tax applies to the whole invoice value.
Fictional case study: separated materials versus a lump sum
Assume a registered contractor performs wholly taxable commercial work, no exemption applies and the pre-tax invoice totals RM100,000.
If supported materials at actual cost are separately stated as RM60,000 and construction services as RM40,000:
RM40,000 × 6% = RM2,400 service tax
If the RM100,000 is an inseparable lump sum:
RM100,000 × 6% = RM6,000 service tax
These alternatives show why genuine contract and invoice evidence matters. They aren’t permission to relabel service value or profit as material cost.
In the separated scenario, the contractor keeps supplier invoices supporting the RM60,000 material cost and the contract supports the division. In the lump-sum scenario, the paperwork doesn’t provide a reliable separation, so the contractor doesn’t create one after the event merely to reduce tax.
The project team keeps the supported split with the claim. The RM3,600 difference between the two tax amounts follows from different documented taxable values; it is not an optional discount for choosing a different invoice label.
Don’t assume every subcontract is B2B-exempt
Paragraphs 36–38 explain the ordinary business-to-business (B2B) conditions. Both provider and recipient must be registered and provide the same construction services specified under Group L, and the services obtained must not be for own consumption.
Being called a subcontractor isn’t enough. Match the actual services and registrations to the conditions and keep the supporting evidence.
Residential, commercial and mixed developments
Avoid the shortcut “the project includes homes, so it is exempt.” Mixed developments can contain residential, non-residential and shared components that require allocation and certification.
Construction Policy 3/2025, amendment 3, dated 30 January 2026, includes mixed-development residential relief and documentation conditions. Its annex uses certified project information and a built-area basis for relevant shared facilities.
Apply the policy to the actual approved components. Don’t use an unsupported percentage across the entire contract.
Contract and project-specific relief
The same January policy includes conditional non-reviewable-contract relief through 30 June 2027 and specified design-and-build arrangements. Signature, stamping, fixed-value, period and variation conditions matter.
Local-authority relief ended on 30 September 2025. A broad older FAQ statement shouldn’t override that dated policy.
Construction Policy 5/2026, dated 8 September 2026, adds specialised relief for specified facilities or ship-conversion work for overseas customers. It isn’t a blanket exemption whenever the customer is foreign.
Progress claims and retention sums
Example 31 and paragraphs 79–81 of the guide explain both parts of the timing rule. Account for tax on payment received; an unpaid amount, including retention, becomes due at the specified 12-month backstop if payment has not arrived earlier. Receipt before the backstop brings the tax into account earlier.
For retention, the service date is the interim-certificate date where one is required, or the date the work is certified complete where no interim certificate is issued. Use that starting point rather than automatically using the invoice date.
Fictional retention example: receipt before the backstop
For a separate wholly taxable service claim of RM100,000, assume no relief applies. The contractor receives RM90,000 and RM10,000 is retained. Tax on the received amount is RM90,000 × 6% = RM5,400, accounted for in the applicable taxable period.
The remaining tax is RM10,000 × 6% = RM600:
| What happens to the retention | When the RM600 comes into account |
|---|---|
| Paid four months after the relevant service date | On receipt, within the applicable taxable-period process |
| Still unpaid when the 12-month period expires | Due on the day after that period expires, even without payment |
Under either branch, the full claim ultimately produces RM6,000 tax on these assumptions. If the contractor has already accounted for the RM600 at the backstop, receiving the retention later does not create a second RM600 charge.
The lesson is to track both receipts and the unpaid-balance clock. Add the service date, certification, receipts and tax already accounted for to the project file so retention cannot disappear between the project team and accounts.
Keep a construction tax file
Your project file should include:
- contracts, amendments and stamping evidence;
- party and registration details;
- project approvals and component allocations;
- invoices separating supported materials where applicable;
- supplier invoices supporting material cost;
- progress and interim certificates;
- payment and retention schedules;
- variation and extension documents;
- the relief provision relied on; and
- review notes when facts change.
Assess the actual project, taxable value and relief conditions before calculating 6%. If missing records prevent that assessment, use the document checklist to agree what the project team needs to supply. For a separate property-rental arrangement, use the rental and leasing guide; its relief dates and conditions differ from construction.
Sources checked on 24 September 2026 against the March 2026 guide and later Customs policies available on that date. Complex contracts, mixed developments and relief claims require project-specific qualified review.
Sources referred to in this guide (3)
We’ve taken reasonable steps to verify the cited sources and check this information as at the source-check date. We can’t guarantee 100% accuracy, completeness or that it remains up to date. This is general information and does not replace professional accounting, tax or legal advice tailored to your circumstances. How these guides were prepared.