MyCalculatorGeneric calculators on this site (percentage, EMI, electricity cost, salary conversion, and similar) use standard mathematical formulas and don't rely on any external data source — you supply the numbers.
Country-specific calculators — covering local salary, tax or take-home pay rules — are built only from official government or statistical sources, such as national tax authorities and central statistics offices. Each country-specific calculator page states its source, the tax year or period it reflects, and any limitations, directly on that page.
We do not use unofficial, unverified or third-party estimates for tax or government-rule figures. If you spot a figure that looks outdated or incorrect, please tell us at hellomycalculator@gmail.com and we'll review it.
Country-specific sources currently in use
| Country | Source | Period covered |
|---|---|---|
| United States | IRS Revenue Procedure 2025-32 (irs.gov); SSA.gov (Social Security wage base); IRS Publication 926 (FICA rates) | Tax year 2026 |
| United Kingdom | House of Commons Library, "Direct taxes: Rates and allowances for 2026/27" (CBP-10618); Deloitte UK Tax Rates 2026/27 (Autumn Budget 2025) | Tax year 2026/27 |
| India | Finance Act 2025 (New Tax Regime), unchanged for FY 2026-27 per Union Budget 2026 | FY 2025-26 / FY 2026-27 (AY 2026-27 / 2027-28) |
| Canada | CRA federal tax brackets & Basic Personal Amount 2026; CRA T4127 Payroll Deductions Formulas (CPP/CPP2/EI) | Tax year 2026 (federal only) |
| Australia | ATO individual income tax rates for 2026-27 | FY 2026-27 |
| UAE | Federal Decree-Law No. 33 of 2021 Concerning the Regulation of Labour Relations, Article 51 | Current law, no expiry |
| Singapore | IRAS.gov.sg, official Individual Income Tax rates table for residents | Year of Assessment 2026 |
| New Zealand | Inland Revenue (IRD) individual income tax rates; ACC Earners' Levy rates | Tax year 2026-27 |