{"code":"fiscal_interest_monthly","name":"Interest expense on the public debt (monthly, $B)","freq":"m","units":"usd_bn","component":null,"source":"Treasury FiscalData","route":"FISCAL","source_url":"https://api.fiscaldata.treasury.gov/services/api/fiscal_service","n_obs":101,"last_value":132.62255143383,"last_date":"2026-05-01","yoy":0.43795,"series":[["2018-01-01",27.81498222845],["2018-02-01",28.434208619080003],["2018-03-01",38.50416699629],["2018-04-01",41.94083611117],["2018-05-01",35.59940885632],["2018-06-01",95.84104091614],["2018-07-01",40.559408610940004],["2018-08-01",38.35663808318],["2018-09-01",28.98135383682],["2018-10-01",31.64753210645],["2018-11-01",35.37131864995],["2018-12-01",97.20254498157001],["2019-01-01",27.81082523743],["2019-02-01",28.71671099206],["2019-03-01",38.93831295137],["2019-04-01",46.5524896712],["2019-05-01",47.82867636937],["2019-06-01",102.79952263563],["2019-07-01",40.341726814690006],["2019-08-01",41.4030833148],["2019-09-01",35.97503973911],["2019-10-01",30.31868063942],["2019-11-01",35.64334105937],["2019-12-01",94.34066795591],["2020-01-01",33.903420244740005],["2020-02-01",34.89099855713],["2020-03-01",40.470878104940006],["2020-04-01",41.00402766241],["2020-05-01",26.5030404103],["2020-06-01",68.46313650773],["2020-07-01",31.30274279403],["2020-08-01",47.16714372423],["2020-09-01",38.759221605129994],["2020-10-01",20.07565845393],["2020-11-01",32.74375159303],["2020-12-01",79.62500215442],["2021-01-01",27.265863758680002],["2021-02-01",32.28236654536],["2021-03-01",36.63945115548],["2021-04-01",45.537476232370004],["2021-05-01",45.71367466712],["2021-06-01",99.28976553286],["2021-07-01",47.81505250407],["2021-08-01",57.71858345458],["2021-09-01",37.68158663027],["2021-10-01",18.938963388799998],["2021-11-01",36.02949813589],["2021-12-01",99.10333125838001],["2022-01-01",43.20192501417],["2022-02-01",41.37709807272],["2022-03-01",52.772616799480005],["2022-04-01",60.05152158172],["2022-05-01",72.75952965064],["2022-06-01",97.85538365251],["2022-07-01",68.52460417771],["2022-08-01",88.13206308554],["2022-09-01",39.99927527937],["2022-10-01",47.57437056774],["2022-11-01",55.01853183928],["2022-12-01",107.41242389833],["2023-01-01",51.07835667557],["2023-02-01",45.56478738563],["2023-03-01",77.57846480565],["2023-04-01",76.02943796653999],["2023-05-01",69.64995237750999],["2023-06-01",125.78867782997],["2023-07-01",73.29670813174],["2023-08-01",82.13620741628999],["2023-09-01",71.47034963923],["2023-10-01",88.9261080675],["2023-11-01",79.92317959085001],["2023-12-01",119.16143505786],["2024-01-01",69.1961259951],["2024-02-01",76.16187182242],["2024-03-01",88.6538671558],["2024-04-01",102.43981161765],["2024-05-01",103.04520707764999],["2024-06-01",140.23804012615],["2024-07-01",88.5494663628],["2024-08-01",92.29347544358001],["2024-09-01",84.44830183180001],["2024-10-01",81.99804998073],["2024-11-01",86.59275181183],["2024-12-01",139.76214720735],["2025-01-01",83.82097750097999],["2025-02-01",85.87223320964],["2025-03-01",104.41343071797999],["2025-04-01",101.65035756769001],["2025-05-01",92.23040524951],["2025-06-01",144.6246836402],["2025-07-01",96.32437052597],["2025-08-01",111.46621897252001],["2025-09-01",91.26965624591],["2025-10-01",104.40361008963],["2025-11-01",96.25465213343],["2025-12-01",154.36588374084],["2026-01-01",71.88816260319],["2026-02-01",93.4833596312],["2026-03-01",102.64442107291],["2026-04-01",111.60057250852999],["2026-05-01",132.62255143383]]}