SST Registration & SST-02 Returns: Thresholds, Deadlines & Penalties

The threshold test: backwards and forwards

Registration is mandatory once your taxable turnover exceeds the threshold for your category — and the test runs in two directions. You are liable if your taxable turnover in the current month plus the previous 11 months has exceeded the threshold (the historical test), or if you have reason to believe it will exceed the threshold in the current month plus the next 11 months (the future test). Either one triggers the obligation.

Two things trip people up. "Taxable turnover" means only your taxable supplies — exempt goods and non-prescribed services do not count towards it, so a business with RM800,000 of revenue may still be below the line. And the window is a rolling 12 months, not your financial year, so you can cross the threshold mid-year.

Applying on MySST — and the deadline you get

Applications are made online at mysst.customs.gov.my. You will need your SSM registration details, business and bank information, and your turnover figures; manufacturers also declare the taxable goods produced. Existing registrants and businesses already known to RMCD may be pre-identified in the system, but the obligation to check and apply is yours.

The timing rule is tight: apply by the last day of the month following the month in which you became liable. Cross the threshold in March, and your application is due by 30 April, with registration taking effect from 1 May. Registering late does not delay the tax — RMCD can backdate your effective date to when liability actually arose, leaving you owing tax on sales where you never charged it and cannot realistically go back and collect it. That is the single most expensive SST mistake a small business makes.

Voluntary registration: usually not worth it

You can apply to register voluntarily below the threshold, and RMCD may approve it. Under GST this was often sensible, because registration let you reclaim input tax. Under SST it usually is not: SST is a single-stage tax with no input-tax credit, so voluntary registration gives you no recovery mechanism — it only adds 5%, 6%, 8% or 10% to your prices and a filing obligation every two months.

The genuine reasons to volunteer are narrow: a manufacturer that needs registered status to buy raw materials under an exemption facility, or a supplier whose corporate customers require a registration number on invoices. Otherwise, staying below the threshold is the cheaper position.

The SST-02 return: every two months, no exceptions

Once registered you are assigned a taxable period of two calendar months, and you file Form SST-02 for each period. The return and the payment are both due on the last day of the month following the end of the taxable period — so the Jan–Feb period is due by 31 March, Mar–Apr by 31 May, and so on. Filing is done through the MySST portal; payment can be made online or by cheque or bank draft to the Director General of Customs.

A nil return is still a return. If you made no taxable supplies in the period you must file SST-02 showing zero — silence is treated as a failure to furnish, not as "nothing to declare". You can also apply to RMCD for a taxable period that aligns with your accounting cycle if the default two-month split is awkward.

When the tax becomes due: invoice basis vs payment basis

Sales tax and service tax do not accrue the same way, which matters when you fill in the return. Sales tax is accounted for on an invoice basis — it becomes due when the goods are sold, disposed of or first used, generally at the point of invoicing, regardless of whether the customer has paid.

Service tax runs on a payment basis: it becomes due when payment for the taxable service is received. That is a cash-flow advantage — you are not funding tax on unpaid invoices — but it has a hard stop. If payment is not received within 12 months from the date of the invoice, the service tax falls due on the day immediately after that 12-month period ends, whether or not the customer ever pays. Long-overdue debtors therefore create a tax liability on their own.

Penalties: late payment compounds to 40%

Late payment of SST attracts a stacking penalty on the unpaid amount: 10% for the first 30 days it remains outstanding, a further 15% for the next 30 days, and another 15% for the 30 days after that — a maximum of 40% once payment is more than 90 days late. The penalty applies to tax that is unpaid, so filing on time but paying late still incurs it.

Failing to register when liable, failing to furnish a return, or giving incorrect information are separate offences under the Sales Tax Act 2018 and Service Tax Act 2018, carrying fines and, in serious cases, imprisonment. RMCD also conducts audits and can raise an assessment for past periods. If you realise you should have registered months ago, voluntary disclosure to RMCD is a much better starting position than waiting to be found.

Deregistration and staying registered

Registration is not permanent. If you cease making taxable supplies — you stop the activity, close the business, or your operations change so nothing taxable remains — you must notify RMCD, generally within 30 days of ceasing. Simply falling below the threshold does not automatically release you: RMCD may require you to stay registered for a period, and you remain liable to charge and file until your deregistration is approved.

Keep records for seven years. Invoices, credit notes, returns and payment evidence all need to be produced on request, and SST invoices must carry the prescribed particulars including your SST registration number and the tax charged separately from the price.

Important caveats

Thresholds, taxable-service categories and penalty provisions are set by the Sales Tax Act 2018, the Service Tax Act 2018 and the orders made under them, and they have been amended repeatedly — most recently in the 1 July 2025 scope expansion. Whether a specific supply is taxable, and at what threshold, is a fact-specific question. Confirm your position on the official MySST portal (mysst.customs.gov.my) or with a licensed tax agent before you register, charge or file. Use the calculator below to get the tax amount on any individual invoice right.