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How much US Treasury debt was due within a year on 31 March 2018?

On , $4.19 trillion of marketable US Treasury debt was due within 12 months, 16.8% more than a year earlier ($3.58 trillion on ), the largest amount of any month-end we hold.

April 2018 is the largest month, with $917.29 billion

Marketable Treasury debt maturing each month, $ trillion

  • Bills
  • Notes and bonds
  • TIPS and floating rate notes
April 2018 is the largest month, with $917.29 billion0.000.250.500.751.00Apr0.92May0.61Jun0.50Jul0.36Aug0.39Sep0.32Oct0.18Nov0.20Dec0.14Jan0.22Feb0.21Mar0.14April 2018 is the largest month, with $917.29 billion0.000.250.500.751.00AprJunAugOctDecFeb

Source: U.S. Treasury, Fiscal Data, Monthly Statement of the Public Debt. Observed .

Each month as a table
Marketable Treasury debt maturing each month ($ million)
Maturing inTotalBillsNotesBondsTIPSFRNsSecurities
April 2018917,290695,982122,734053,58844,98610
May 2018610,415446,006157,6926,7170011
June 2018495,720376,995118,7260008
July 2018364,716187,996116,679017,20142,84010
August 2018389,955236,005153,9500009
September 2018316,480199,993116,4870007
October 2018178,58020,000116,6730041,9076
November 2018202,72120,000175,5477,174007
December 2018138,38219,999118,3830005
January 2019216,72439,995116,194017,01143,5258
February 2019213,75922,000178,66813,090007
March 2019141,83724,000117,8370005
All of these months4,186,5792,288,9691,609,57026,98287,800173,25893

The table scrolls sideways; the first column stays in place.

What is all marketable debt made of?

KindAmount, $ millionShare
Bills2,288,96915.4%
Notes8,827,02359.5%
Bonds2,036,91913.7%
TIPS1,348,8179.1%
Floating rate notes333,9852.3%
All marketable debt14,835,714100.0%

Bills, the securities that mature within a year of issue, made up 15.4% of marketable debt at the month-end and 54.7% of what matures in the months above.

Weighted by amount, marketable debt had 69.0 months to go until it matures, on average, at the month-end.

How does it compare with a year earlier?

Debt due within the next months ($ million)
Month-endTotalBillsBills share
31 March 20184,186,5792,288,96954.7%
31 March 20173,583,4361,756,96049.0%

About these figures

The Federal Reserve's part and the source

How much of it did the Federal Reserve hold?

Maturing debt held in the Federal Reserve's System Open Market Account ($ million)
Maturing inTotalHeld by the FedFed share
April 2018917,29034,5743.8%
May 2018610,41554,7069.0%
June 2018495,72030,4546.1%
July 2018364,71631,4218.6%
August 2018389,95544,00111.3%
September 2018316,48019,0076.0%
October 2018178,58023,83313.3%
November 2018202,72159,22029.2%
December 2018138,38218,20913.2%
January 2019216,72416,2407.5%
February 2019213,75956,05226.2%
March 2019141,83722,37915.8%

Source: Federal Reserve Bank of New York, SOMA holdings. Observed .

Source

Source: U.S. Treasury, Fiscal Data, Monthly Statement of the Public Debt. Observed .

Sources and licence

Sources and licence

  • U.S. Treasury, Bureau of the Fiscal Service, Fiscal Data (source). Licence: Public domain, a work of the US federal government
  • © 2026 Federal Reserve Bank of New York. Content from the New York Fed subject to the Terms of Use at newyorkfed.org. The Federal Reserve share of maturities is computed by 500metrics. (source). Licence: Federal Reserve Bank of New York terms of use

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