Data Sources

All rate data used in our calculators is sourced from official government and regulatory bodies.

India (IN)

  • Income tax slabs: Income Tax Department — incometax.gov.in
  • EPF rates: Employees' Provident Fund Organisation — epfindia.gov.in
  • GST rates: CBIC — cbic-gst.gov.in
  • NPS: Pension Fund Regulatory and Development Authority — pfrda.org.in
  • Insurance: Insurance Regulatory and Development Authority of India — irdai.gov.in
  • CPI inflation: Ministry of Statistics and Programme Implementation — mospi.gov.in

United States (US)

  • Federal tax brackets: Internal Revenue Service — irs.gov
  • 401k/IRA limits: IRS
  • Social Security: Social Security Administration — ssa.gov

United Kingdom (GB)

  • Income tax rates: HM Revenue & Customs — gov.uk/hmrc
  • National Insurance: HMRC

Canada (CA)

  • Federal/provincial tax: Canada Revenue Agency — canada.ca/cra

Australia (AU)

  • Income tax: Australian Taxation Office — ato.gov.au
  • Superannuation: APRA

Singapore (SG)

  • Income tax: IRAS — iras.gov.sg
  • CPF rates: CPF Board — cpf.gov.sg

Verification dates are noted on each calculator. If you find outdated data, please report it to trilumos.app@gmail.com.