From the home page, Debt and Interest
Net interest, last 12 months
Up $80.8 billion in a year
$1,051.8 billion
Source: Treasury, Monthly Treasury Statement, Table 9; series mts_table_9.Net Interest. Data as of Sept 2026.
Method: The last 12 months, from Table 9’s fiscal-year-to-date totals: this fiscal year to date, plus the whole of last fiscal year, less last fiscal year to the same month.
Net interest, last 12 months, Sept 2026: 1,051.8 + 970.4 − 970.4 = 1,051.8.
| Date | Value |
|---|---|
| Sept 2026 | $1,051.8 billion |
| Aug 2026 | $1,053.9 billion |
| July 2026 | $1,061.0 billion |
| June 2026 | $1,048.8 billion |
| May 2026 | $1,028.7 billion |
| April 2026 | $1,007.4 billion |
| March 2026 | $1,000.2 billion |
| Feb 2026 | $998.8 billion |
| Jan 2026 | $994.3 billion |
| Dec 2025 | $999.1 billion |
| Nov 2025 | $989.4 billion |
| Oct 2025 | $980.9 billion |
| Sept 2025 | $971.0 billion |
| Aug 2025 | $971.7 billion |
| July 2025 | $959.2 billion |
| June 2025 | $948.0 billion |
| May 2025 | $945.1 billion |
| April 2025 | $946.2 billion |
| March 2025 | $941.5 billion |
| Feb 2025 | $927.7 billion |
| Jan 2025 | $920.7 billion |
| Dec 2024 | $907.6 billion |
| Nov 2024 | $893.5 billion |
| Oct 2024 | $886.0 billion |
| Sept 2024 | $881.7 billion |
| Aug 2024 | $872.5 billion |
| July 2024 | $861.1 billion |
| June 2024 | $847.3 billion |
| May 2024 | $836.1 billion |
| April 2024 | $809.6 billion |
| March 2024 | $787.3 billion |
| Feb 2024 | $774.8 billion |
| Jan 2024 | $748.3 billion |
| Dec 2023 | $730.4 billion |
| Nov 2023 | $716.7 billion |
| Oct 2023 | $692.2 billion |
| Sept 2023 | $659.2 billion |
| Aug 2023 | $633.7 billion |
| July 2023 | $627.5 billion |
| June 2023 | $615.8 billion |
| May 2023 | $588.1 billion |
| April 2023 | $583.6 billion |
| March 2023 | $564.9 billion |
| Feb 2023 | $541.5 billion |
| Jan 2023 | $533.1 billion |
| Dec 2022 | $517.7 billion |
| Nov 2022 | $505.4 billion |
| Oct 2022 | $488.2 billion |
| Sept 2022 | $475.1 billion |
| Aug 2022 | $465.6 billion |
| July 2022 | $444.7 billion |
| June 2022 | $427.3 billion |
| May 2022 | $423.3 billion |
| April 2022 | $404.2 billion |
| March 2022 | $394.4 billion |
| Feb 2022 | $382.5 billion |
| Jan 2022 | $376.0 billion |
| Dec 2021 | $366.7 billion |
| Nov 2021 | $350.6 billion |
| Oct 2021 | $349.7 billion |
| Sept 2021 | $352.3 billion |
| Aug 2021 | $356.9 billion |
| July 2021 | $351.7 billion |
| June 2021 | $343.5 billion |
| May 2021 | $323.7 billion |
| April 2021 | $312.7 billion |
| March 2021 | $314.6 billion |
| Feb 2021 | $321.1 billion |
| Jan 2021 | $326.1 billion |
| Dec 2020 | $332.6 billion |
| Nov 2020 | $341.5 billion |
| Oct 2020 | $344.6 billion |
| Sept 2020 | $344.7 billion |
| Aug 2020 | $342.4 billion |
| July 2020 | $341.6 billion |
| June 2020 | $346.9 billion |
| May 2020 | $368.0 billion |
| April 2020 | $382.7 billion |
| March 2020 | $384.8 billion |
| Feb 2020 | $383.7 billion |
| Jan 2020 | $377.8 billion |
| Dec 2019 | $375.4 billion |
| Nov 2019 | $375.1 billion |
| Oct 2019 | $376.1 billion |
| Sept 2019 | $375.6 billion |
| Aug 2019 | $371.7 billion |
| July 2019 | $367.9 billion |
| June 2019 | $368.2 billion |
| May 2019 | $361.0 billion |
| April 2019 | $352.0 billion |
| March 2019 | $349.2 billion |
| Feb 2019 | $345.7 billion |
| Jan 2019 | $344.2 billion |
| Dec 2018 | $340.3 billion |
| Nov 2018 | $330.1 billion |
| Oct 2018 | $328.2 billion |
| Sept 2018 | $324.7 billion |
| Aug 2018 | $320.3 billion |
| July 2018 | $313.7 billion |
| June 2018 | $304.1 billion |
| May 2018 | $297.5 billion |
| April 2018 | $291.0 billion |
| March 2018 | $283.2 billion |
| Feb 2018 | $279.9 billion |
| Jan 2018 | $277.7 billion |
| Dec 2017 | $274.1 billion |
| Nov 2017 | $274.2 billion |
| Oct 2017 | $267.9 billion |
| Sept 2017 | $262.8 billion |
| Aug 2017 | $257.6 billion |
| July 2017 | $258.6 billion |
| June 2017 | $260.9 billion |
| May 2017 | $262.2 billion |
| April 2017 | $265.1 billion |
| March 2017 | $259.9 billion |
| Feb 2017 | $253.9 billion |
| Jan 2017 | $251.5 billion |
| Dec 2016 | $250.6 billion |
| Nov 2016 | $247.9 billion |
| Oct 2016 | $244.1 billion |
| Sept 2016 | $240.7 billion |
| Aug 2016 | $246.3 billion |
| July 2016 | $245.4 billion |
| June 2016 | $245.0 billion |
| May 2016 | $240.2 billion |
| April 2016 | $239.9 billion |
| March 2016 | $242.7 billion |
| Feb 2016 | $234.6 billion |
| Jan 2016 | $229.6 billion |
| Dec 2015 | $225.5 billion |
| Nov 2015 | $222.2 billion |
| Oct 2015 | $222.2 billion |
| Sept 2015 | $223.3 billion |
| Aug 2015 | $222.4 billion |
| July 2015 | $221.0 billion |
| June 2015 | $217.6 billion |
| May 2015 | $217.9 billion |
| April 2015 | $217.5 billion |
| March 2015 | $216.6 billion |
Download CSV (every observation, $ billions). Every dataset. Data licensed CC BY 4.0.