Maturities · Month-end record, Monthly Statement of the Public Debt

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

On 31 March 2018, $4.19 trillion of marketable US Treasury debt was due within 12 months, 16.8% more than a year earlier ($3.58 trillion on 31 March 2017), the largest amount of any month-end we hold.

Marketable Treasury debt maturing each month, by kind

April 2018 to March 2019As of the month-end of 31 Mar 2018

$0.25T$0.5T$0.75T$1.0TAprMayJunJulAugSepOctNovDecJanFebMar

April 2018 Bills $695.98B Notes and bonds $122.73B TIPS and FRNs $98.57B Total $917.29BMay 2018 Bills $446.01B Notes and bonds $164.41B Total $610.41BJune 2018 Bills $377.00B Notes and bonds $118.73B Total $495.72BJuly 2018 Bills $188.00B Notes and bonds $116.68B TIPS and FRNs $60.04B Total $364.72BAugust 2018 Bills $236.00B Notes and bonds $153.95B Total $389.95BSeptember 2018 Bills $199.99B Notes and bonds $116.49B Total $316.48BOctober 2018 Bills $20.00B Notes and bonds $116.67B TIPS and FRNs $41.91B Total $178.58BNovember 2018 Bills $20.00B Notes and bonds $182.72B Total $202.72BDecember 2018 Bills $20.00B Notes and bonds $118.38B Total $138.38BJanuary 2019 Bills $39.99B Notes and bonds $116.19B TIPS and FRNs $60.54B Total $216.73BFebruary 2019 Bills $22.00B Notes and bonds $191.76B Total $213.76BMarch 2019 Bills $24.00B Notes and bonds $117.84B Total $141.84B

Each kind

Bills
Notes and bonds
TIPS and FRNs

Each column is one month after the month-end, in parts by kind of security; pointing at a column shows them.

The linesLatest: 31 Mar 2018

Due within 12 months$4.19T
Bills$2.29T
Notes and bonds$1.64T
TIPS and FRNs$261.06B

Inspect and compare dates

What matures within 12 months of this month-end beside the same months counted from the month-end a year earlier, 31 March 2017. Every month is in the table under "The numbers behind the chart".

Debt due within 12 months of 31 March 2018 and of 31 March 2017 ($ million)
Measure	This month-end	A year earlier
Month-end	31 March 2018	31 March 2017
Due within 12 months	4,186,579	3,583,436
Bills	2,288,969	1,756,960
Notes	1,609,570	1,552,712
Bonds	26,982	26,528
TIPS	87,800	82,914
FRNs	173,258	164,322
Securities	93	89
Bills share	54.7%	49.0%

Observed 31 Mar 2018.

That month-end

April 2018 is the largest month, with $917.29 billion.

Bills, the securities that mature within a year of issue, were 54.7% of what was due in these months.

A year earlier

At the month-end a year before, 31 March 2017, $3.58 trillion was due within the next 12 months, against $4.19 trillion at this one.

All marketable debt

Marketable Treasury debt outstanding at the month-end was $14.84 trillion, by kind:

Bills $2.29T
Notes and bonds $10.86T
TIPS and FRNs $1.68T

Bills made up 15.4% of it. Weighted by amount, it had 69.0 months to go until it matures, on average.

Each kind, in millions

Understanding the maturity calendar

Where it stands today

$4.19T was due within 12 months of the month-end of 31 Mar 2018, 54.7% of it in bills.

What does the maturity calendar show?

Treasury usually pays maturing debt with new borrowing, so the amount due is the amount Treasury rolls over into new securities.

Bills issued after the month-end are not here; the calendar filled with new bills every week.

The numbers behind the chart

How much was due in each of the 12 months after it?$ million, by kind

Marketable Treasury debt maturing each month ($ million)
Maturing in	Total	Bills	Notes	Bonds	TIPS	FRNs	Securities
April 2018	917,290	695,982	122,734	0	53,588	44,986	10
May 2018	610,415	446,006	157,692	6,717	0	0	11
June 2018	495,720	376,995	118,726	0	0	0	8
July 2018	364,716	187,996	116,679	0	17,201	42,840	10
August 2018	389,955	236,005	153,950	0	0	0	9
September 2018	316,480	199,993	116,487	0	0	0	7
October 2018	178,580	20,000	116,673	0	0	41,907	6
November 2018	202,721	20,000	175,547	7,174	0	0	7
December 2018	138,382	19,999	118,383	0	0	0	5
January 2019	216,724	39,995	116,194	0	17,011	43,525	8
February 2019	213,759	22,000	178,668	13,090	0	0	7
March 2019	141,837	24,000	117,837	0	0	0	5
All of these months	4,186,579	2,288,969	1,609,570	26,982	87,800	173,258	93

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

What was all marketable debt made of?31 March 2018, $ million

Marketable Treasury debt outstanding at the month-end ($ million)
Kind	Amount, $ million	Share
Bills	2,288,969	15.4%
Notes	8,827,023	59.5%
Bonds	2,036,919	13.7%
TIPS	1,348,817	9.1%
Floating rate notes	333,985	2.3%
All marketable debt	14,835,714	100.0%

How much of it did the Federal Reserve hold?System Open Market Account, $ million

Maturing debt held in the Federal Reserve's System Open Market Account ($ million)
Maturing in	Total	Held by the Fed	Fed share
April 2018	917,290	34,574	3.8%
May 2018	610,415	54,706	9.0%
June 2018	495,720	30,454	6.1%
July 2018	364,716	31,421	8.6%
August 2018	389,955	44,001	11.3%
September 2018	316,480	19,007	6.0%
October 2018	178,580	23,833	13.3%
November 2018	202,721	59,220	29.2%
December 2018	138,382	18,209	13.2%
January 2019	216,724	16,240	7.5%
February 2019	213,759	56,052	26.2%
March 2019	141,837	22,379	15.8%

Observed 28 Mar 2018.

When are the figures from?

Observed 31 Mar 2018.

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Page updated 4 Oct 2026, 09:34 UTC

Sources

© 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) Terms: Federal Reserve Bank of New York terms of use.