Answer plain questions — get every figure validated, with the exact line number to type into the MRA e-filing form. Nothing leaves your browser.
Two quick questions that decide which reliefs you can claim. Keep your Statement of Emoluments from your employer nearby — most figures come straight from it.
Copy these from your Statement of Emoluments and Tax Deduction (your employer must give it to you by 15 August). One row per employer — these become the Annex — Emoluments table and section 11.
Switch on only what applies to you. Anything left on "No" is simply skipped.
Go through each question — even the ones you think don't apply. Caps are applied automatically and anything over the limit is flagged, not silently accepted.