Verified Sources & Evidence Registry
Every calculation is traceable to authoritative government and statistical publications.
Authoritative Data Sources
Internal Revenue Service (IRS)
TIER_1_GOVERNMENTStatutory federal income tax brackets, standard deductions, and personal exemption schedules.
Social Security Administration (SSA)
TIER_1_GOVERNMENTFICA Old-Age, Survivors, and Disability Insurance (OASDI) wage base and tax rate guidelines.
New York State Department of Taxation and Finance
TIER_1_GOVERNMENTNYS progressive income tax schedules and standard deduction tables.
New York City Department of Finance
TIER_1_GOVERNMENTNYC resident individual income tax rates and local surcharge tables.
US Department of Housing and Urban Development (HUD)
TIER_1_GOVERNMENTFair Market Rents (FMR) for studio, 1-bedroom, 2-bedroom, and 3-bedroom residential units.
US Bureau of Labor Statistics (BLS)
TIER_2_STATISTICSConsumer Price Index (CPI) and Consumer Expenditure Survey (CEX) household expenditure weighting.
HM Revenue & Customs (HMRC)
TIER_1_GOVERNMENTPAYE income tax rates, Personal Allowance thresholds, and Class 1 National Insurance contributions.
Federal Tax Authority (FTA) & Ministry of Finance UAE
TIER_1_GOVERNMENTIndividual personal income tax zero-rate statutory decree and national social pension applicability.
Canada Revenue Agency (CRA)
TIER_1_GOVERNMENTFederal and provincial income tax brackets, CPP/QPP contributions, and Employment Insurance (EI) ceilings.
Australian Taxation Office (ATO)
TIER_1_GOVERNMENTIndividual resident income tax rates, Stage 3 tax adjustments, and Medicare Levy schedules.
Inland Revenue Authority of Singapore (IRAS)
TIER_1_GOVERNMENTTax resident progressive income tax rates and Central Provident Fund (CPF) contribution schedules.
European Central Bank (ECB) Reference Exchange Rates
TIER_3_INSTITUTIONALDaily reference foreign exchange conversion snapshots for multi-currency benchmarking.