Monthly average, September 2026
Spot price of triple superphosphate imported at the US Gulf.
| Unit | Price (USD) |
|---|---|
| metric ton | 690.00 |
| Year | Average | High | Low | Change | In today's dollars |
|---|---|---|---|---|---|
| 2026 | 649.41 | 735.60 | 529.20 | +12.4% | 658.59 |
| 2025 | 577.62 | 664.40 | 478.00 | +21.7% | 604.53 |
| 2024 | 474.58 | 507.20 | 434.90 | −1.2% | 509.75 |
| 2023 | 480.22 | 569.40 | 390.00 | −32.9% | 531.03 |
| 2022 | 716.06 | 856.00 | 584.40 | +33.0% | 824.41 |
| 2021 | 538.20 | 686.70 | 337.60 | +103.1% | 669.23 |
| 2020 | 265.04 | 320.00 | 239.00 | −10.0% | 345.05 |
| 2019 | 294.56 | 355.00 | 243.30 | −15.0% | 388.21 |
| 2018 | 346.74 | 385.00 | 320.00 | +22.4% | 465.26 |
| 2017 | 283.22 | 308.80 | 270.00 | −2.4% | 389.31 |
| 2016 | 290.28 | 334.00 | 277.50 | −23.1% | 407.52 |
| 2015 | 377.60 | 383.00 | 360.00 | −1.2% | 536.79 |
| 2014 | 382.00 | 398.00 | 333.00 | +0.3% | 543.69 |
| 2013 | 380.75 | 428.00 | 320.00 | −17.6% | 550.70 |
| 2012 | 462.01 | 485.00 | 435.00 | −14.2% | 678.02 |
| 2011 | 538.26 | 592.50 | 475.00 | +40.9% | 806.27 |
| 2010 | 381.91 | 472.50 | 296.30 | +48.4% | 590.13 |
| 2009 | 257.42 | 350.00 | 220.00 | −70.7% | 404.28 |
| 2008 | 879.38 | 1,131.50 | 405.00 | +159.4% | 1,376.20 |
| 2007 | 339.06 | 446.90 | 207.50 | +68.2% | 550.98 |
| 2006 | 201.63 | 205.50 | 200.50 | +0.1% | 337.01 |
| 2005 | 201.48 | 202.00 | 201.00 | +8.1% | 347.62 |
| 2004 | 186.31 | 202.00 | 171.60 | +24.8% | 332.35 |
| 2003 | 149.34 | 164.00 | 128.60 | +12.2% | 273.54 |
| 2002 | 133.07 | 138.00 | 127.40 | +4.9% | 249.26 |
| 2001 | 126.88 | 131.00 | 122.50 | −7.9% | 241.45 |
| 2000 | 137.72 | 142.50 | 129.00 | −10.9% | 269.47 |
| 1999 | 154.50 | 166.40 | 138.00 | −10.7% | 312.52 |
| 1998 | 173.05 | 177.50 | 167.50 | +0.7% | 357.70 |
| 1997 | 171.91 | 181.90 | 163.50 | −2.2% | 360.85 |
| 1996 | 175.82 | 182.50 | 162.50 | +17.5% | 377.70 |
| 1995 | 149.63 | 162.50 | 142.40 | +13.3% | 330.86 |
| 1994 | 132.10 | 139.00 | 125.00 | +18.0% | 300.29 |
| 1993 | 111.95 | 122.50 | 105.10 | −7.3% | 261.12 |
| 1992 | 120.74 | 121.90 | 120.00 | −9.3% | 289.93 |
| 1991 | 133.13 | 152.50 | 120.00 | +1.0% | 329.35 |
| 1990 | 131.83 | 152.50 | 109.50 | −8.5% | 339.95 |
| 1989 | 144.00 | 164.00 | 126.00 | −9.1% | 391.39 |
| 1988 | 158.38 | 164.00 | 153.50 | +14.8% | 451.24 |
| 1987 | 138.00 | 152.50 | 113.50 | +13.9% | 409.22 |
| 1986 | 121.17 | 140.00 | 108.00 | −0.2% | 372.47 |
| 1985 | 121.38 | 137.00 | 112.00 | −7.5% | 380.19 |
| 1984 | 131.25 | 142.50 | 116.00 | −2.5% | 425.70 |
| 1983 | 134.67 | 145.00 | 122.50 | −2.7% | 455.57 |
| 1982 | 138.42 | 157.50 | 131.50 | −14.2% | 483.30 |
| 1981 | 161.33 | 204.50 | 133.50 | −10.5% | 597.85 |
| 1980 | 180.25 | 201.50 | 164.50 | +23.3% | 736.98 |
| 1979 | 146.23 | 190.00 | 109.50 | +49.1% | 678.87 |
| 1978 | 98.04 | 105.50 | 92.00 | +0.1% | 506.40 |
| 1977 | 97.92 | 108.00 | 92.00 | +7.7% | 544.35 |
| 1976 | 90.92 | 105.00 | 80.00 | −55.1% | 538.29 |
| 1975 | 202.50 | 335.00 | 123.00 | −33.3% | 1,267.83 |
| 1974 | 303.58 | 361.00 | 180.00 | +205.1% | 2,074.48 |
| 1973 | 99.50 | 115.00 | 84.00 | +47.4% | 755.08 |
| 1972 | 67.50 | 75.00 | 60.00 | +56.1% | 543.88 |
| 1971 | 43.25 | 46.50 | 40.00 | +1.8% | 359.89 |
| 1970 | 42.50 | 44.00 | 41.00 | +8.3% | 368.83 |
| 1969 | 39.25 | 40.00 | 38.50 | +4.7% | 360.52 |
| 1968 | 37.50 | 39.00 | 36.00 | −16.7% | 363.26 |
| 1967 | 45.00 | 46.50 | 43.50 | −10.0% | 454.53 |
| 1966 | 50.00 | 50.00 | 50.00 | −7.4% | 519.03 |
| 1965 | 54.00 | 54.00 | 54.00 | +1.9% | 577.46 |
| 1964 | 53.00 | 53.00 | 53.00 | +1.9% | 575.75 |
| 1963 | 52.00 | 52.00 | 52.00 | +2.0% | 572.11 |
| 1962 | 51.00 | 51.00 | 51.00 | −1.9% | 568.06 |
| 1961 | 52.00 | 52.00 | 52.00 | −1.9% | 586.15 |
| 1960 | 53.00 | 53.00 | 53.00 | — | 603.81 |
Yearly averages of monthly prices. Today's dollars adjust for US consumer price inflation (CPI-U).
| Month | Price | Change |
|---|---|---|
| Sep 2026 | 690.00 | −2.0% |
| Aug 2026 | 704.40 | −2.1% |
| Jul 2026 | 719.50 | −2.2% |
| Jun 2026 | 735.60 | +3.1% |
| May 2026 | 713.50 | +8.4% |
| Apr 2026 | 658.10 | +17.9% |
| Mar 2026 | 558.10 | +4.1% |
| Feb 2026 | 536.30 | +1.3% |
| Jan 2026 | 529.20 | −1.7% |
| Dec 2025 | 538.50 | −15.4% |
| Nov 2025 | 636.30 | −3.4% |
| Oct 2025 | 658.50 | −0.9% |
| Sep 2025 | 664.40 | +0.2% |
| Aug 2025 | 662.90 | +1.2% |
| Jul 2025 | 655.00 | +2.1% |
| Jun 2025 | 641.30 | +18.4% |
| May 2025 | 541.50 | +9.2% |
| Apr 2025 | 496.00 | +3.7% |
| Mar 2025 | 478.50 | −0.4% |
| Feb 2025 | 480.60 | +0.5% |
| Jan 2025 | 478.00 | +0.1% |
| Dec 2024 | 477.50 | −2.7% |
| Nov 2024 | 491.00 | −2.5% |
| Oct 2024 | 503.80 | −0.1% |
The TSP fertilizer price averaged 690.00 USD / metric ton in September 2026, +3.9% against a year earlier. These are monthly benchmark prices; physical trades add freight, quality premiums and taxes.
The highest monthly price since 1960 was 1,131.50 USD / metric ton in August 2008; the lowest was 36.00 USD / metric ton in July 1968.
In today's dollars, the 2025 average of 577.62 USD / metric ton is worth about 604.53 USD / metric ton. The highest yearly average in today's dollars was 2,074.48 USD / metric ton in 1974.
Source: World Bank Commodity Price Data (The Pink Sheet), licensed under CC BY 4.0; inflation adjustment with US CPI-U from the Bureau of Labor Statistics.