SST (Sales & Service Tax)
ASPLUS helps you charge SST on the right documents and prepares the figures for your bi-monthly SST-02 return.
⚠️ ASPLUS prepares SST figures to help you file — it does not submit SST-02 to Kastam on your behalf and does not provide official tax advice. Always review before filing.
1. Tell ASPLUS you're SST-registered
In Settings → Company, record that your company is SST-registered and enter your SST registration number. This is what appears on documents and on the SST-02 return header.
If you're not SST-registered, you generally don't charge SST — leave your items without an SST tax.
2. Put SST on your items
Set the correct sales tax on each item (see Items). When that item goes on an invoice, ASPLUS adds the SST automatically, calculates the line and header tax, and stores it on the invoice.
3. SST on sales vs purchases
- Output tax — SST you charge customers on issued invoices.
- Input tax — SST you pay suppliers, captured on your purchase bills (see Purchases).
4. The SST-02 return
The SST-02 Return Report (Reports → SST-02, Essential & Pro only — Lifetime counts as Pro) rolls it all up for a taxable period:
- Output tax summed from issued invoices.
- Input tax summed from purchase bills.
- Net payable = output − input.
- A ledger cross-check against your SST Payable / SST Receivable accounts so you can spot gaps.
The default period is the last completed 2-month window (Jan–Feb, Mar–Apr, …). Full detail: Reports → SST-02.
SST FAQ
My invoice isn't charging SST
Two things to check: (1) the item has an SST sales tax set (see Items); (2) your company is marked SST-registered in Settings. Both must be in place for SST to apply.
The SST-02 output tax doesn't match my SST Payable ledger
Output tax comes from issued invoices, while the ledger cross-check reads the SST Payable account. A gap usually means an invoice was edited after posting, an SST invoice was recorded without tax, or a manual journal touched SST Payable. Review the period's invoices and the SST Payable ledger in the General Ledger.
Where do I actually submit the SST-02?
On the Kastam MyTax portal. ASPLUS gives you the figures to key in (and a PDF to keep). It never submits for you.
Why is the SST-02 report locked for me?
The SST-02 report is Essential and Pro only (Lifetime counts as Pro). On Starter/Free it's locked — upgrade to unlock it. See Plans & Billing.