1. Every calculator shows its formula
If you cannot see how a number was produced, you cannot check it. Calculator pages state the formula and the assumptions used, in plain language, next to the result. Where an input is excluded from a calculation, we say so rather than letting you assume it was included.
2. Where two methods are both defensible, we show both
Some Malaysian calculations genuinely have more than one accepted method. Termination benefits are the clearest example: the Regulations 1980 formula uses a calendar-day rate (salary × 12 ÷ 365) while most payroll departments apply the ordinary rate of pay (salary ÷ 26), and the two produce materially different payouts. Picking one silently would be misleading, so we show both and identify which is the statutory floor.
3. Rates come from the source that sets them
Figures are taken from the body that publishes them — Bank Negara Malaysia for OPR and exchange rates, LHDN for tax bands and reliefs, KWSP for EPF, PERKESO for SOCSO and EIS, JTKSM for employment benefits, TNB for tariffs, DOSM for statistics. The source is cited inline on the page where the figure appears, not buried in a footer.
4. Live data where live data exists
Where an official API exists we read from it rather than hardcoding a number that will quietly go stale. Bank Negara's open API supplies OPR, exchange rates, base rates and Kijang Emas prices. Pages built on live feeds revalidate daily.
5. Estimates are labelled as estimates
Our tax estimates do not replace LHDN's official PCB calculator, our loan estimates do not replace a bank's assessment, and our benefit estimates do not replace a determination by the Labour Department. Where our model is a simplification, the page says which simplification was made.
Core formulas at a glance
| Area | Formula used | Source |
|---|---|---|
| EPF (KWSP) | Monthly wages × employee rate (default 11%) | KWSP |
| SOCSO | Contribution per PERKESO schedule, subject to the wage ceiling | PERKESO |
| EIS (SIP) | 0.2% employee share, subject to the wage ceiling | PERKESO |
| Income tax | Progressive bands applied to chargeable income after reliefs | LHDN |
| Hire purchase | Flat rate: (principal × rate × years + principal) ÷ months | Industry standard |
| Home loan | Reducing balance amortisation on the quoted effective rate | Industry standard |
| DSR | (Total monthly commitments + new instalment) ÷ gross income × 100 | BNM guidance |
| Termination benefits | Daily rate × 10/15/20 days × years of service | JTKSM, Regulations 1980 |
| Stamp duty (MOT) | Tiered 1% / 2% / 3% / 4% by price band | LHDN |
Individual calculator pages state the exact assumptions applied for that tool, including any ceilings, age bands or exclusions.
What we do not do
- We do not use AI to generate financial figures. Calculator results and verdicts are computed by deterministic rules, so identical inputs always produce identical output and every result is auditable.
- We do not invent user reviews, ratings or testimonial counts to earn review stars in search results.
- We do not let commission decide what we recommend, and we do not publish commission figures in page content.
- We do not hardcode the current year, so a page never claims to be current when it is not.
Methodology last reviewed: August 2026. Spotted an error in a formula? Tell us and we will check it.
Rate Update Policy
When figures get refreshed
Disclaimer
Limitations and disclosure
Terms of Use
Rules for using this site
