Years of Life Taken by Taxes

What this measures
Years of life taken by taxes = career length × tax burden, where the tax burden is a country's tax revenue as a share of its GDP. The Source selector chooses how that burden is measured. The four sources differ in which levels of government and which taxes they count, so the same country can show a different burden under each — none is "wrong"; they answer different questions.

Tax-burden sources (the Source selector)
World Bank — central-government tax revenue as % of GDP, indicator GC.TAX.TOTL.GD.ZS. Excludes most social-security contributions and, in most countries, state and local taxes. Broadest country coverage, so it is the default.
OECD — total tax revenue across all levels of government, including compulsory social-security contributions, as % of GDP (OECD Global Revenue Statistics Database). Coverage in this build is OECD and partner countries.
IMF Tax Revenue — tax revenue as % of GDP, from the IMF World Revenue Longitudinal Dataset (WoRLD), variable TaxRev.
IMF Tax + Social Contributions — tax revenue plus social contributions as % of GDP, IMF WoRLD variables TaxRev + SocialCon. Higher than the tax-only figure; coverage is narrower because social-contribution data is missing for some countries and years.
Because their scope differs, the World Bank measure (central government, no social contributions) reads lowest, and the OECD / IMF Tax + Social measures (all levels, with social contributions) read highest, for the same country.

Year selection
Each source uses the latest available year for the selected country; there is no manual year selector. The data year in use is shown with the result.

Optional inflation overlay
Inflation, consumer prices (annual %): FP.CPI.TOTL.ZG (World Bank). When enabled, the calculator adds the recent 5-year average CPI rate as an implicit burden on purchasing power. This is an illustrative overlay, not a forecast.

Conversions
Workdays per year = workdays per week × 52.
Years lost = career length × burden.
Per-year days = workdays per year × burden.
Tax Freedom Day is estimated by counting the required number of workdays from January 1 using the chosen weekly schedule.

Chart types
Bar and Donut use Chart.js. Waffle, Gauge, Pictograph, and Calendar are drawn directly on HTML Canvas. The Career / Per-year toggle switches between career-length totals (years) and annual totals (workdays). The Calendar view always shows an annual Tax Freedom Day calendar regardless of the period toggle.

Sources
World Bank, Tax revenue (% of GDP), GC.TAX.TOTL.GD.ZS: data.worldbank.org.
OECD, Global Revenue Statistics Database (total tax revenue, % of GDP): oecd.org.
IMF, World Revenue Longitudinal Dataset (WoRLD) — variables TaxRev and SocialCon: data.imf.org.
World Bank, Inflation, consumer prices (annual %), FP.CPI.TOTL.ZG: data.worldbank.org.
All figures are stored locally — no live API calls at runtime.