Tamarly Lists · Wednesday · Borrowing costs

10 countries where government borrowing got more expensive

24 of 24 countries saw their 10-year government bond yield rise in the latest month of OECD data; the 10 below had the largest increase.

As of . Research from public records, not investment advice.

  1. France: 10-year yield 4.48% in September 2026, up 45 basis points on the month before. Up 96 basis points on a year earlier.
    Source: OECD via FRED, series IRLTLT01FRM156N
  2. Poland: 10-year yield 6.23% in September 2026, up 42 basis points on the month before. Up 76 basis points on a year earlier.
    Source: OECD via FRED, series IRLTLT01PLM156N
  3. Greece: 10-year yield 4.23% in September 2026, up 36 basis points on the month before. Up 84 basis points on a year earlier.
    Source: OECD via FRED, series IRLTLT01GRM156N
  4. United States: 10-year yield 4.99% in September 2026, up 31 basis points on the month before. Up 87 basis points on a year earlier.
    Source: OECD via FRED, series IRLTLT01USM156N
  5. Portugal: 10-year yield 3.85% in September 2026, up 31 basis points on the month before. Up 72 basis points on a year earlier.
    Source: OECD via FRED, series IRLTLT01PTM156N
  6. Spain: 10-year yield 3.92% in September 2026, up 29 basis points on the month before. Up 66 basis points on a year earlier.
    Source: OECD via FRED, series IRLTLT01ESM156N
  7. Germany: 10-year yield 3.47% in September 2026, up 28 basis points on the month before. Up 78 basis points on a year earlier.
    Source: OECD via FRED, series IRLTLT01DEM156N
  8. Australia: 10-year yield 5.28% in September 2026, up 27 basis points on the month before. Up 99 basis points on a year earlier.
    Source: OECD via FRED, series IRLTLT01AUM156N
  9. United Kingdom: 10-year yield 5.24% in September 2026, up 25 basis points on the month before. Up 55 basis points on a year earlier.
    Source: OECD via FRED, series IRLTLT01GBM156N
  10. New Zealand: 10-year yield 4.94% in September 2026, up 23 basis points on the month before. Up 65 basis points on a year earlier.
    Source: OECD via FRED, series IRLTLT01NZM156N

How this list is made

Monthly long-term government bond yields (10 years) from the OECD, published on FRED, latest month against the month before. A higher yield means a government pays more to borrow for 10 years. Monthly averages, so the latest month runs 1 to 2 months behind the calendar.

Sources: OECD Main Economic Indicators via FRED.

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