About Cyclone Tools & Our Calculation Methods

What the site provides

Cyclone Tools combines calculators, text utilities, image tools and developer helpers. Most tools calculate in your browser. Currency conversion retrieves published reference rates, and the video downloader uses a separate server service with clearly stated availability limits.

Regional defaults are suggestions

We use a local country-level IP database to suggest a country and currency. You can choose another country, currency or tax jurisdiction. A network location does not establish tax residence. Mortgage examples and work schedules are editable starting assumptions, not current lender quotes or a statement of your employment contract.

How financial estimates are calculated

Loan schedules use the displayed interest convention and currency precision. Canadian fixed-mortgage estimates can use nominal semiannual compounding. Salary conversion uses the work hours, days and weeks you enter. Changing an amount's currency unit does not itself convert that amount using an exchange rate; use the currency converter for that purpose.

Tax rules, review dates and limits

Tax pages identify the income period, rule version, filing assumptions, deductions and excluded taxes. US and Canadian estimates cover federal income tax only. Income after estimated income tax excludes other payroll withholdings and is not a take-home-pay calculation. Fiscal-year labels remain fixed until the underlying official rules are reviewed; they do not advance automatically with the calendar.

• United States federal income tax — 2026; sources reviewed 2026-10-31. IRS IR-2025-102: IRS releases tax inflation adjustments for tax year 2026 (Oct 9, 2025) · IRS Rev. Proc. 2025-32: Tax inflation adjustments for tax year 2026

• UK income tax (England, Wales & Northern Ireland) — 2026/27; sources reviewed 2026-10-31. GOV.UK: Income Tax rates and Personal Allowances (current rates) · HMRC: Income Tax rates and allowances for current and previous tax years (updated 6 April 2026)

• Scottish income tax — 2026/27; sources reviewed 2026-10-31. GOV.UK: Income Tax in Scotland — current rates · HMRC: Income Tax rates and allowances for current and previous tax years (updated 6 April 2026)

• Canada federal income tax — 2026; sources reviewed 2026-10-31. CRA: Current year tax rates and income brackets (2026) · CRA: Indexation adjustment for personal income tax and benefit amounts (2026)

• Australia resident income tax — 2026/27; sources reviewed 2026-10-31. ATO: Tax rates – Australian resident (updated 13 August 2026) · ATO: Low income tax offset (LITO)

• Mainland China — Resident Individual Income Tax (annual wages) — 2026 tax year (annual); sources reviewed 2026-10-31. China Individual Income Tax Law (Article 6 — CNY 60,000 annual deduction, 3%–45% rates) · Shanghai Tax Service — Individual income tax rate table (PDF)

• Hong Kong — Salaries Tax — 2026/27; sources reviewed 2026-10-31. GovHK — Amount of Allowance (2026/27 basic allowance HK$145,000; married person's HK$290,000) · GovHK — Tax Rates of Salaries Tax & Personal Assessment (progressive 2%–17%; standard 15%/16%)

• Singapore — Resident Individual Income Tax — YA 2026 (income year 2025); sources reviewed 2026-10-31. IRAS — Individual Income Tax rates (resident rates from YA 2024 onwards) · IRAS — Earned Income Relief (age bands $1,000 / $6,000 / $8,000) · IRAS — Tax reliefs ($80,000 overall personal income tax relief cap)

• India — New Tax Regime (salaried resident) — FY 2026-27 (Tax Year 2026-27); sources reviewed 2026-10-31. Finance Bill, 2026 — Memorandum of provisions relating to direct taxes (Section 202 rates, ₹50 lakh surcharge threshold, 4% Health & Education Cess) · Finance Bill, 2026 — Bill text and First Schedule (Government of India) · Income-tax Act, 2025 — Sections 19(1), 156(2), 202(1): salary deduction, rebate and new-regime slabs (official Gazette)

Sources and attribution

The utility foundation is OmniTools, distributed under the MIT License. Country lookup uses IP Geolocation by DB-IP Lite data under CC BY 4.0. Currency reference data comes from Frankfurter; the converter shows the returned publication date.