SOCIAL COST OF CARBON DIOXIDE CALCULATOR

Base Year 2023 (The Base Year is often the current year and can be no later than the first year of emissions.)

Year 1 2023 (First year of emissions)

CO2 emissions (metric 

tons)1

Year of emissions Average, 5% Average, 3% Average 2.5%

95th Percentile, 

3% Average, 5% Average, 3% Average 2.5%

95th Percentile, 

3%

2023 1216367.14 $16 $54 $80 $162 $19,391,325 $66,032,923 $97,721,720 $197,220,552

2024 1216367.14 $16 $55 $82 $166 $19,034,408 $65,370,877 $96,888,093 $195,622,541

2025 1216367.14 $17 $56 $83 $169 $18,666,409 $64,691,378 $96,036,998 $193,949,162

2026 1216367.14 $17 $57 $84 $173 $18,291,346 $63,996,006 $95,169,782 $192,207,308

2027 1216367.14 $18 $59 $86 $176 $17,909,676 $63,287,341 $94,287,739 $190,403,467

2028 1216367.14 $18 $60 $87 $180 $17,522,878 $62,564,618 $93,392,107 $188,540,599

2029 1216367.14 $19 $61 $88 $183 $17,131,399 $61,830,307 $92,484,075 $186,624,721

Average, 5% Average, 3% Average 2.5% 95th Percentile, 3%

Present Value (in 

Base Year) of 

Estimated SC-CO2 for 

all CO2 emissions, 

2020$) $127,947,441 $447,773,450 $665,980,514 $1,344,568,350

1

Annual GHG Estimates from from Air Resource Specialist

2

Technical Support Document: Social Cost of Carbon, Methane, and Nitrous Oxide, Interim Estimates under E.O. 13990. Interagency Working Group on Social Cost of Carbon, United States Government. February 2021. 3

Social Cost estimates for emissions years beyond 2050 are estimated using an annual growth rate equal to the average annual growth in social cost estimates for the last five years of available estimates from the TSD (2046-2050)

4

The SCC estimates from the IWG represent the present value of damages from that year's emissions discounted back to the year of emissions.

These columns take that value and discount to the base year in order to facilitate the total NPV calculation.

This calculator was developed by Rebecca Moore, Senior Economist, BLM 970-226-9246 rmoore@blm.gov

Last updated 11/18/21

Per ton SC-CO2 Value (2020$/metric ton CO2)

2,3

Present Value (in Base Year) of Estimated SC-CO2 by emissions year 

(2020$)4
SOCIAL COST OF METHANE CALCULATOR

Base Year 2023 (The Base Year is often the current year and can be no later than the first year of emissions.)

Year 1 2023 (First year of emissions)

CH4 emissions (metric 

tons)1

Year of emissions Average, 5% Average, 3% Average 2.5%

95th Percentile, 

3% Average, 5% Average, 3% Average 2.5%

95th Percentile, 

3%

2023 136.67 $747 $1,626 $2,120 $4,292 $102,143 $222,208 $289,673 $586,526

2024 136.67 $775 $1,673 $2,175 $4,420 $100,823 $221,964 $290,000 $586,481

2025 136.67 $802 $1,720 $2,230 $4,548 $99,397 $221,545 $290,139 $585,941

2026 136.67 $829 $1,767 $2,286 $4,677 $97,879 $220,963 $290,098 $584,935

2027 136.67 $856 $1,814 $2,341 $4,805 $96,279 $220,227 $289,887 $583,490

2028 136.67 $884 $1,861 $2,397 $4,934 $94,610 $219,346 $289,513 $581,633

2029 136.67 $911 $1,908 $2,452 $5,062 $92,882 $218,330 $288,986 $579,390

Average, 5% Average, 3% Average 2.5% 95th Percentile, 3%

Present Value (in 

Base Year) of 

Estimated SC-CH4 for 

all CH4 emissions, 

2020$) $684,014 $1,544,583 $2,028,295 $4,088,395

1

Annual GHG Estimates from from Air Resource Specialist

2

Technical Support Document: Social Cost of Carbon, Methane, and Nitrous Oxide, Interim Estimates under E.O. 13990. Interagency Working Group on Social Cost of Carbon, United States Government. February 2021. 3

Social Cost estimates for emissions years beyond 2050 are estimated using an annual growth rate equal to the average annual growth in social cost estimates for the last five years of available estimates from the TSD (2046-2050)

4

The SCC estimates from the IWG represent the present value of damages from that year's emissions discounted back to the year of emissions.

 These columns take that value and discount to the base year in order to facilitate the total NPV calculation.

This calculator was developed by Rebecca Moore, Senior Economist, BLM 970-226-9246 rmoore@blm.gov

Last updated 11/18/21

Per ton SC-CH4 Value (2020$/metric ton CH4)

2,3

Present Value (in Base Year) of Estimated SC-CH4 by emissions year 

(2020$)4
SOCIAL COST OF NITROUS OXIDE CALCULATOR

Base Year 2023 (The Base Year is often the current year and can be no later than the first year of emissions.)

Year 1 2023 (First year of emissions)

N2O emissions (metric 

tons)1

Year of emissions Average, 5% Average, 3% Average 2.5%

95th Percentile, 

3% Average, 5% Average, 3% Average 2.5%

95th Percentile, 

3%

2023 20.08 $6,385 $19,717 $28,801 $51,879 $128,240 $395,976 $578,423 $1,041,912

2024 20.08 $6,587 $20,154 $29,358 $53,087 $125,996 $392,965 $575,224 $1,035,114

2025 20.08 $6,789 $20,591 $29,914 $54,295 $123,676 $389,794 $571,836 $1,027,828

2026 20.08 $6,991 $21,028 $30,471 $55,502 $121,290 $386,474 $568,271 $1,020,088

2027 20.08 $7,193 $21,465 $31,028 $56,710 $118,852 $383,017 $564,541 $1,011,927

2028 20.08 $7,395 $21,902 $31,585 $57,918 $116,370 $379,433 $560,654 $1,003,376

2029 20.08 $7,597 $22,339 $32,141 $59,125 $113,856 $375,733 $556,621 $994,465

Average, 5% Average, 3% Average 2.5% 95th Percentile, 3%

Present Value (in 

Base Year) of 

Estimated SC-N2O for 

all N2O emissions, 

2020$) $848,280 $2,703,392 $3,975,569 $7,134,708

1

Annual GHG Estimates from from Air Resource Specialist

2

Technical Support Document: Social Cost of Carbon, Methane, and Nitrous Oxide, Interim Estimates under E.O. 13990. Interagency Working Group on Social Cost of Carbon, United States Government. February 2021. 3

Social Cost estimates for emissions years beyond 2050 are estimated using an annual growth rate equal to the average annual growth in social cost estimates for the last five years of available estimates from the TSD (2046-2050)

4

The SCC estimates from the IWG represent the present value of damages from that year's emissions discounted back to the year of emissions. 

 These columns take that value and discount to the base year in order to facilitate the total NPV calculation.

This calculator was developed by Rebecca Moore, Senior Economist, BLM 970-226-9246 rmoore@blm.gov

Last updated 11/18/21

Per ton SC-N2O Value (2020$/metric ton N2O)2,3

Development and Operations

Present Value (in Base Year) of Estimated SC-N2O by emissions year 

(2020$)4
year 5.0%_CO2 3.0%_CO2 2.5%_CO2 3% 95th Pct._CO2

2020 14.476 51.082 76.421 151.608

2021 14.964 52.15 77.727 155.119

2022 15.453 53.219 79.033 158.629

2023 15.942 54.287 80.339 162.139

2024 16.431 55.355 81.645 165.65

2025 16.919 56.423 82.951 169.16

2026 17.408 57.491 84.257 172.67

2027 17.897 58.56 85.563 176.181

2028 18.386 59.628 86.869 179.691

2029 18.874 60.696 88.175 183.201

2030 19.363 61.764 89.481 186.712

2031 19.947 62.908 90.844 190.535

2032 20.53 64.052 92.207 194.359

2033 21.114 65.196 93.57 198.183

2034 21.697 66.34 94.934 202.006

2035 22.281 67.484 96.297 205.83

2036 22.864 68.628 97.66 209.654

2037 23.448 69.772 99.023 213.477

2038 24.031 70.916 100.387 217.301

2039 24.615 72.06 101.75 221.124

2040 25.199 73.204 103.113 224.948

2041 25.845 74.35 104.449 228.448

2042 26.491 75.496 105.785 231.947

2043 27.137 76.642 107.12 235.447

2044 27.783 77.788 108.456 238.947

2045 28.429 78.933 109.792 242.447

2046 29.076 80.079 111.128 245.946

2047 29.722 81.225 112.464 249.446

2048 30.368 82.371 113.799 252.946

2049 31.014 83.516 115.135 256.445

2050 31.66 84.662 116.471 259.945

2051 32.349 85.857 117.855 263.593

2052 33.053 87.068 119.255 267.293

2053 33.772 88.297 120.672 271.044

2054 34.507 89.543 122.106 274.848

2055 35.258 90.807 123.556 278.706

2056 36.026 92.088 125.024 282.618

2057 36.810 93.388 126.510 286.584

2058 37.611 94.706 128.013 290.606

2059 38.429 96.042 129.534 294.685

2060 39.265 97.398 131.073 298.821

2061 40.120 98.772 132.630 303.015

2062 40.993 100.166 134.206 307.268

2063 41.885 101.580 135.800 311.580

2064 42.797 103.013 137.414 315.953

2065 43.728 104.467 139.046 320.388

2066 44.680 105.941 140.698 324.884

2067 45.652 107.436 142.370 329.444

2068 46.646 108.952 144.061 334.068

2069 47.661 110.490 145.773 338.756

2070 48.698 112.049 147.505 343.511
5.0%_CH4 3.0%_CH4 2.5%_CH4 3% 95th Pct._CH4 5.0%_N2O

665.688 1485.078 1953.209 3906.371 5779.426

692.917 1532.015 2008.649 4034.779 5981.4

720.147 1578.952 2064.09 4163.187 6183.373

747.376 1625.89 2119.53 4291.595 6385.347

774.605 1672.827 2174.97 4420.003 6587.321

801.834 1719.764 2230.41 4548.41 6789.294

829.063 1766.701 2285.851 4676.818 6991.268

856.292 1813.639 2341.291 4805.226 7193.242

883.521 1860.576 2396.731 4933.634 7395.215

910.75 1907.513 2452.171 5062.042 7597.189

937.979 1954.45 2507.612 5190.45 7799.163

972.355 2009.824 2571.507 5344.225 8046.879

1006.731 2065.198 2635.403 5498.001 8294.595

1041.107 2120.572 2699.299 5651.776 8542.311

1075.483 2175.946 2763.195 5805.552 8790.027

1109.859 2231.32 2827.091 5959.327 9037.743

1144.235 2286.694 2890.986 6113.103 9285.459

1178.611 2342.068 2954.882 6266.878 9533.175

1212.987 2397.441 3018.778 6420.653 9780.891

1247.363 2452.815 3082.674 6574.429 10028.607

1281.739 2508.189 3146.569 6728.204 10276.323

1319.241 2564.102 3209.556 6872.909 10566.545

1356.743 2620.014 3272.542 7017.614 10856.768

1394.244 2675.927 3335.528 7162.319 11146.991

1431.746 2731.839 3398.515 7307.023 11437.213

1469.247 2787.751 3461.501 7451.728 11727.436

1506.749 2843.664 3524.487 7596.433 12017.659

1544.25 2899.576 3587.474 7741.138 12307.881

1581.752 2955.489 3650.46 7885.842 12598.104

1619.253 3011.401 3713.446 8030.547 12888.327

1656.755 3067.314 3776.432 8175.252 13178.549

1697.036 3126.505 3842.777 8328.179 13489.648

1738.297 3186.839 3910.287 8483.966 13808.092

1780.561 3248.336 3978.983 8642.667 14134.052

1823.852 3311.021 4048.886 8804.337 14467.708

1868.196 3374.915 4120.018 8969.032 14809.240

1913.618 3440.042 4192.399 9136.807 15158.834

1960.145 3506.425 4266.051 9307.720 15516.681

2007.803 3574.090 4340.997 9481.831 15882.975

2056.619 3643.061 4417.260 9659.198 16257.917

2106.622 3713.362 4494.863 9839.884 16641.709

2157.841 3785.021 4573.829 10023.949 17034.562

2210.306 3858.062 4654.183 10211.458 17436.688

2264.046 3932.512 4735.948 10402.473 17848.307

2319.092 4008.399 4819.150 10597.063 18269.643

2375.477 4085.751 4903.813 10795.292 18700.925

2433.233 4164.595 4989.964 10997.229 19142.389

2492.393 4244.961 5077.628 11202.943 19594.274

2552.992 4326.878 5166.832 11412.506 20056.826

2615.064 4410.375 5257.603 11625.989 20530.297

2678.645 4495.484 5349.969 11843.465 21014.945
3.0%_N2O 2.5%_N2O 3% 95th Pct._N2O

18405.298 27130.806 48255.974

18842.379 27687.532 49463.691

19279.46 28244.259 50671.409

19716.542 28800.985 51879.127

20153.623 29357.712 53086.844

20590.704 29914.439 54294.562

21027.785 30471.165 55502.279

21464.867 31027.892 56709.997

21901.948 31584.618 57917.715

22339.029 32141.345 59125.432

22776.11 32698.071 60333.15

23268.02 33309.463 61692.265

23759.929 33920.854 63051.381

24251.838 34532.245 64410.496

24743.748 35143.636 65769.611

25235.657 35755.028 67128.727

25727.567 36366.419 68487.842

26219.476 36977.81 69846.958

26711.385 37589.202 71206.073

27203.295 38200.593 72565.188

27695.204 38811.984 73924.304

28224.594 39456.17 75348.507

28753.983 40100.356 76772.71

29283.373 40744.542 78196.914

29812.763 41388.727 79621.117

30342.152 42032.913 81045.32

30871.542 42677.099 82469.524

31400.932 43321.285 83893.727

31930.321 43965.471 85317.93

32459.711 44609.656 86742.134

32989.101 45253.842 88166.337

33545.582 45927.063 89663.937

34111.451 46610.299 91186.975

34686.864 47303.699 92735.884

35271.985 48007.414 94311.103

35866.975 48721.598 95913.078

36472.002 49446.407 97542.265

37087.235 50181.999 99199.125

37712.847 50928.533 100884.129

38349.011 51686.174 102597.754

38995.907 52455.085 104340.487

39653.715 53235.436 106112.822

40322.619 54027.395 107915.263

41002.807 54831.135 109748.319

41694.468 55646.833 111612.513

42397.797 56474.666 113508.371

43112.990 57314.813 115436.433

43840.248 58167.460 117397.245

44579.773 59032.790 119391.363

45331.774 59910.994 121419.354

46096.459 60802.262 123481.792
1.02276 1.01452 1.01217 1.01443 1.02552 1.02006 1.01820 1.01942 1.02475 1.01745 1.01533 1.01757

1.02222 1.01431 1.01202 1.01423 1.02489 1.01966 1.01787 1.01905 1.02415 1.01715 1.01509 1.01727

1.02173 1.01411 1.01187 1.01403 1.02428 1.01928 1.01756 1.01869 1.02358 1.01686 1.01487 1.01698

1.02127 1.01390 1.01174 1.01383 1.02371 1.01892 1.01725 1.01835 1.02304 1.01658 1.01465 1.01669

1.02083 1.01372 1.01160 1.01365 1.02316 1.01857 1.01696 1.01802 1.02252 1.01631 1.01444 1.01642

1.02176 1.01411 1.01188 1.01404 1.02431 1.01930 1.01757 1.01871 1.02361 1.01687 1.01488 1.01699

Average Annual Growth 2046-2050

Technical Support Document: Social Cost of Carbon, Methane, and Nitrous Oxide, Interim Estimates under E.O. 13990. 

Interagency Working Group on Social Cost of Carbon, United States Government. February 2021

Social Cost estimates for emissions years beyond 2050 are estimated using an annual growth rate equal

 to the average annual growth in social cost estimates for the last five years of available estimates from the TSD (2046-2050)