About Smart Calculator

Smart Calculatoris Singapore's free online calculator hub. We build accurate, easy-to-use calculators for everyday financial decisions — from CPF contributions and income tax to IPPT scores, PSLE results, and property stamp duty.

Our Mission

Government rates and policies in Singapore change frequently. Our mission is to provide Singaporeans with free, up-to-date calculators that reflect the latest official rates from CPF Board, IRAS, HDB, MOM, MINDEF, and MOE.

Data Sources

All calculations use rates verified from official Singapore government sources:

• CPF rates — cpf.gov.sg
• Income tax brackets — iras.gov.sg
• IPPT scoring tables — MINDEF / NS Portal
• Housing grants & stamp duty — hdb.gov.sg / iras.gov.sg
• Leave entitlements — mom.gov.sg
• Education grading — moe.gov.sg
• Health standards — HPB / MOH Singapore

How We Stay Current

We verify all rates at the start of each year using official .gov.sg sources. CPF rates are updated every January, tax brackets every February (for the new Year of Assessment), and other rates as they change. Each rate file in our system includes a verification timestamp and source URL.

Important Note

Smart Calculator is for reference and educational purposes only. While we strive for accuracy, always verify important financial decisions with the relevant official source or a qualified professional.