Government Bond Yields Worldwide: Yield Curves by Country

Sovereign bond yields for the United States, United Kingdom, euro area, Japan, Canada and Australia in one comparable table. Every maturity each debt office publishes, the move since the previous session, the curve slope with an inversion flag, and cross country spreads measured on the same date.

Six official sources, one output format. No API key, no signup, no browser.

Why this exists

Every debt office publishes its own curve, in its own file format, on its own calendar. The US posts an XML feed by month, the Bank of England a CSV with British date strings, the ECB an SDMX document with positional keys, Japan a monthly CSV, Canada a JSON API, Australia a statistics table with a metadata header. Getting one comparable table out of them is the job. That is what this returns.

Modes

• Latest - each country's newest published curve, one row per maturity, with the move in basis points since its previous session.
• History - the same rows across any date range.
• Spreads - one row per country per date: 2 year, 5 year, 10 year, 20 year and 30 year yields, the 2s10s slope in basis points, an inversion flag, and the 10 year spread against the US and against the euro area.

What you get for each row

Field	Meaning
country, countryCode	United States, United Kingdom, Euro area, Japan, Canada, Australia
date	the date the yield applies to, not the date it was downloaded
maturityLabel, maturityYears	3M, 2Y, 10Y and the same point as a number, so curves sort and align across countries
yieldPercent	the published yield, per cent per annum
changeFromPreviousBasisPoints	move since that country's previous published session
kind	nominal, real (inflation linked) or policy_rate
curveType	what the number actually is: par yield, zero coupon spot rate, compound yield, benchmark bond yield
publicationLagDays	how many days behind today this figure is
sourceName, sourceUrl	the publishing institution

Spreads rows add slope2s10sBasisPoints, curveInverted, spreadVsUnitedStates10YBasisPoints, spreadVsEuroArea10YBasisPoints, comparedWithSameDate and missingPeers.

Example output

{
  "mode": "spreads",
  "country": "Japan",
  "countryCode": "JP",
  "date": "2026-07-28",
  "yield2YPercent": 1.504,
  "yield10YPercent": 2.783,
  "yield30YPercent": 3.98,
  "change10YBasisPoints": 0.5,
  "slope2s10sBasisPoints": 127.9,
  "curveInverted": false,
  "spreadVsUnitedStates10YBasisPoints": -182.7,
  "spreadVsEuroArea10YBasisPoints": -37.5,
  "comparedWithSameDate": true,
  "missingPeers": [],
  "publicationLagDays": 1
}

Coverage, stated honestly

Country	Maturities published	What the number is
United States	1M, 1.5M, 2M, 3M, 4M, 6M, 1Y, 2Y, 3Y, 5Y, 7Y, 10Y, 20Y, 30Y	par yield
United Kingdom	5Y, 10Y, 20Y (plus Bank Rate, optional)	nominal par yield
Euro area	3M, 6M, 1Y, 2Y, 3Y, 5Y, 7Y, 10Y, 15Y, 20Y, 30Y	zero coupon spot rate, AAA rated euro area central government bonds
Japan	1Y to 10Y, 15Y, 20Y, 25Y, 30Y, 40Y	compound yield
Canada	2Y, 3Y, 5Y, 7Y, 10Y, LONG (plus a real return bond, optional)	benchmark bond yield
Australia	2Y, 3Y, 5Y, 10Y (plus an indexed bond, optional)	interpolated bond yield

Things worth knowing before you build on it:

• The United Kingdom has no 2 year series in this database, so a UK 2s10s slope comes back null rather than guessed.
• Australia's table runs several business days behind the other five. Every row carries publicationLagDays so you can see the age of what you are comparing.
• Curve types differ. A US par yield and a euro area zero coupon spot rate are close but not identical constructions. The curveType field says which you are holding.
• Spreads mode always loads the US and euro area curves as references, even if you did not ask for those countries, so the spread columns are populated whatever selection you make. Reference rows are not returned and not billed.
• Cross country spreads are only ever computed between two figures published on the same date. National holidays do not line up. If the peer did not publish that day the spread is null and missingPeers names it, rather than quietly comparing against a neighbouring session.
• Inflation linked yields are excluded by default. Canada's real return bond and Australia's indexed bond sit in the same published files as the nominal benchmarks; mixing a real yield into a nominal curve would corrupt every slope and spread. Turn them on with includeRealYields and they arrive marked kind: "real".
• Japanese history before the current month comes from the ministry's archive file, which is large, slow and has been observed to stop mid row. Whatever parses is returned and the shortfall is reported in a note row; it is never padded.
• Long US histories are slower than the rest: that feed is served a year per request at roughly ten seconds each.

Sources

• US Department of the Treasury, daily Treasury par yield curve
• Bank of England, Interactive Statistical Database
• European Central Bank Data Portal, euro area yield curve
• Japan Ministry of Finance, JGB interest rates
• Bank of Canada, Valet API, selected benchmark bond yields
• Reserve Bank of Australia, table F2 capital market yields

All are official publications of the issuing authority or its central bank.

Pricing

$0.004 per row. The first 2 rows of every run are free, and note rows (an unknown country, a maturity nobody publishes, a source that did not respond) are never charged.

A latest snapshot of all six countries at the four key maturities is about 20 rows, or $0.08. A full month of daily 10 year yields for all six countries is about 130 rows, or $0.52. A terminal subscription that carries the same six curves starts in the hundreds of dollars a month.

Related actors

• US Treasury Yields & Interest Rates Scraper - one country in depth: auctions, bills, TIPS, average interest on the debt.
• SOFR & Money Market Rates: Benchmarks and Fed Operations - the overnight funding market underneath these curves.
• European Economic Indicators - inflation, unemployment and growth for the same economies.

How to run it via API

curl -X POST "https://api.apify.com/v2/acts/scrapemint~government-bond-yields-worldwide/runs?token=YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"mode":"spreads","countries":["US","GB","EA","JP","CA","AU"],"daysBack":10}'